91.100.10 (Cement. Gypsum. Lime. Mortar) 标准查询与下载

ASTM C806-12 膨胀性水泥灰浆的受限膨胀的标准试验方法

1.1 This test method covers the determination of length changes of expansive cement mortar, while under restraint, due to the development of internal forces resulting from hydration of the cement. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (Warning—Fresh hydraulic cement mixtures are caustic and may cause burns to skin and tissue upon prolonged exposure.2)

Standard Test Method for Restrained Expansion of Expansive Cement Mortar

ASTM C1708-12 含水凝水泥的自流平沙浆的标准试验方法

The test methods in this standard are used to evaluate freshly mixed properties such as the initial flow, flow retention, and healing time as well as hardened properties such as compressive strength, setting time, and flexural strength, of self-leveling mortars. Tests are conducted under standardized conditions for comparative purposes and results are not intended to be representative of performance under field conditions.1.1 These test methods are appropriate to evaluate the performance of self-leveling mortars containing hydraulic cements that are used to improve the levelness, smoothness, and flatness of existing floors. These materials may be used as an underlayment to receive floor finishes, or as an overlayment to serve as the wear surface. The self-leveling mortars covered by these test methods consist of proprietary blends of hydraulic cements, along with fine aggregate, polymers, fillers, and other additives. 1.2 Units8212;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Some values have only SI units because the inch-pound equivalents are not used in practice. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

Standard Test Methods for Self-leveling Mortars Containing Hydraulic Cements

ASTM C780-12 普通及钢筋混凝土砌块用灰浆的预施工及施工评定标准试验方法

5. Significance and UseTop Bottom 5.1 During preconstruction and construction evaluations, use of these test methods establishes specific and overall performance characteristics for the mortar system. 5.2 Preconstruction testing of mortars prebatched by weight provides information for the selection of the individual mortar system best suited for the masonry to be constructed. The recommended tests and their significance are as follows: 5.2.1 Consistency determinations by cone penetration (Annex A1) allow gaging the water additions for all mortars included in the preconstruction test series. Even if the mortar consistency as measured at the construction site is at a different penetration value than those measured during the preconstruction tests, the cone preparation test serves to standardize water additions for mortars being considered as alternatives before construction. Additional testing of mortar water content-consistency relationships (Annex A4) will allow relating these two factors to batch-to-batch variations at the construction site. 5.2.2 Consistency retention by cone penetration (Annex A2) using disturbed or undisturbed mortar samples provides a means of establishing the early-age setting and stiffening characteristics of the mortars. Because laboratory testing is conducted under static climatic conditions, consistency retention test results reflect the relative performance of the mortar systems under test. The same general relationships are expected to hold during testing at the construction project, except as they are influenced by jobsite weather conditions. 5.2.3 Mortar water-content determinations (Annex A4) allow measurement of the water content of the mortar mixture. Mortars prebatched using moist masonry sand may be mathematically analyzed for mortar water content; however, this test, when used for preconstruction evaluation, establishes the effectiveness of the test method and serves as the control or base for tests performed at the construction site. 5.2.4 Mortar aggregate ratio testing (Annex A4) provides a method for determining the ratio of aggregate-to-cementitious materials. The sieving operation employed during this test is incapable of separating an individual cementitious material when more than one such material is used, but can accurately establish the aggregate-to-cementitious materials ratio of the mixture. 5.2.5 Mortar air-content testing (Annex A5) is useful in establishing the value of this component of the mortar. This test is of particular importance in evaluating mortars that contain air-entraining portland cement, air-entraining lime, masonry cement or any combination thereo......

Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry

ASTM C1713-12 古迹砌体修复用砂浆的标准规格

1.1 This specification covers mortar for the repair of masonry that was constructed with methods and materials that pre-date the origination of current standards of construction that are compatible with it. The mortar may be used for non-structural purposes such as repointing of the masonry, or for structural purposes such as, but not restricted to, re-construction or repair of mortar joints that contribute to the structural integrity of the masonry. 1.2 Masonry includes the following units laid in mortar: (1) cast stone, (2) clay masonry unitsbrick and clay tile, (3) concrete masonry units, (4) natural stone, and (5) terra cotta. 1.3 This specification may be used to pre-qualify mortar for a project. 1.4 Mortars tested using this specification are laboratory-prepared mortars and do not represent in-place, site mortars. 1.5 Use of this specification should be based on a thorough understanding of the function, maintenance, and repair requirements for the preservation and continued performance of the masonry in the context of the building structure and long-term performance. The user of this specification is responsible for examining all criteria and selecting the appropriate mortar formulation and properties required. 1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Mortars for the Repair of Historic Masonry

ASTM C952-12 砌块用灰浆粘结强度的标准试验方法

1.1 This test method provides two procedures for measuring bond strength of mortar to masonry units: a crossed brick couplet tensile test for evaluating mortar-brick bond strength and a stacked-bond, flexural test for evaluating mortar-concrete block bond strength. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Bond Strength of Mortar to Masonry Units

ASTM C926-12a 硅酸盐水泥基灰浆应用的标准规格

1.1 This specification covers the requirements for the application of full thickness portland cement-based plaster for exterior (stucco) and interior work. 1.2 This specification sets forth tables for proportioning of various plaster mixes and plaster thickness. Note 18212;General information will be found in Annex A1. Design considerations will be found in Annex A2. 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses are approximate and are provided for information purposes only. 1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.5 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.

Standard Specification for Application of Portland Cement-Based Plaster

ASTM C1384-12 灰泥石混合物标准规格

1.1 This specification pertains to admixtures for masonry mortars. Admixtures are substances other than Specification C270 prescribed materials of water, aggregate, and cementitious materials that are used to improve one or more of the recognized desirable properties of conventional masonry mortar. 1.2 This specification does not cover coloring pigments.Note 1???Information on coloring pigments can be found in Specification C979. 1.3 This specification does not cover additives that are added to the cementitious materials during the manufacture of the cementitious materials. 1.4 Acceptance of an admixture is based on its performance in an admixed mortar. Acceptance of the admixed masonry mortar is based on attainment of performance either equivalent to that required for conventional mortar or improved performance of one or more indicated properties, while maintaining required performance levels for other properties. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. Note 2???The testing laboratory performing the test methods referenced in this specification should be evaluated in accordance with Practice C1093.

Standard Specification for Admixtures for Masonry Mortars

ASTM C595/C595M-12 混合水凝水泥的标准规格

A2.3.1 This annex provides a means to determine the amount of methylene blue dye adsorbed by a sample of finely ground limestone. Methylene blue dye is preferentially adsorbed by clay minerals that may be present in limestone. The amount of dye adsorbed is related to the clay type and content. Certain clays may increase the water demand or affect other properties of cements if present in sufficient quantity in the limestone when used an ingredient in cement. The specification places a limit on the methylene blue index of limestone permitted as an ingredient in blended cement.1.1 This specification pertains to blended hydraulic cements for both general and special applications, using slag, pozzolan, limestone, or some combination of these, with portland cement or portland cement clinker or slag with lime. Note 18212;This specification prescribes ingredients and proportions, with some performance requirements whereas Performance Specification C1157 is a hydraulic cement specification in which performance criteria alone govern the products and their acceptance. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Values in SI units [or inch-pound units] shall be obtained by measurement in SI units [or inch-pound units] or by appropriate conversion, using the Rules for Conversion and Rounding given in , of measurements made in other units [or SI units]. Values are stated in only SI units when inch-pound units are not used in practice. 1.3 The text of this standard refers to notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) are not requirements of the standard.

Standard Specification for Blended Hydraulic Cements

ASTM C595/C595M-12e1 混合水凝水泥的标准规格

A2.3.1 This annex provides a means to determine the amount of methylene blue dye adsorbed by a sample of finely ground limestone. Methylene blue dye is preferentially adsorbed by clay minerals that may be present in limestone. The amount of dye adsorbed is related to the clay type and content. Certain clays may increase the water demand or affect other properties of cements if present in sufficient quantity in the limestone when used an ingredient in cement. The specification places a limit on the methylene blue index of limestone permitted as an ingredient in blended cement.1.1 This specification pertains to blended hydraulic cements for both general and special applications, using slag, pozzolan, limestone, or some combination of these, with portland cement or portland cement clinker or slag with lime. Note 18212;This specification prescribes ingredients and proportions, with some performance requirements whereas Performance Specification C1157 is a hydraulic cement specification in which performance criteria alone govern the products and their acceptance. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Values in SI units [or inch-pound units] shall be obtained by measurement in SI units [or inch-pound units] or by appropriate conversion, using the Rules for Conversion and Rounding given in , of measurements made in other units [or SI units]. Values are stated in only SI units when inch-pound units are not used in practice. 1.3 The text of this standard refers to notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) are not requirements of the standard.

Standard Specification for Blended Hydraulic Cements

ASTM C1741-12 胶接后拉钢筋束水泥浆的漏铸稳定性的标准试验方法

This test method is designed to evaluate the bleed stability of a freshly-mixed grout under static pressure. It can be used in both the laboratory to qualify grout materials and in the field as a quality control test. When used to qualify grout materials, replicate tests may be specified. It is intended that the test pressure, acceptance criteria, and number of replicate tests be set forth in the contract documents if this test method is referenced. These values will normally vary depending on the vertical rise of the post-tensioning tendon. Note 18212;Appendix X1 includes a reference for an example of test pressures and bleeding limits. The procedure for this test was developed by Schokker et al. based on previous work by Schupack. 1.1 This test method is designed to determine the bleed stability of freshly-mixed cementitious grout under static pressure. 1.2 Units8212;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

Standard Test Method for Bleed Stability of Cementitious Post-Tensioning Tendon Grout

ASTM C1764-12 直墙应用件中使用带波特兰水泥基塑料的非金属塑料基(板条)标准试验方法

4.1 General: 4.1.1 Non metallic reinforced Portland Cement Based Plaster are vertically applied exterior wall claddings that may be subject to variety of conditions over the claddings service life. The series of tests described in this standard evaluates performance under a variety of test conditions and exposures. Any given project may not be subject to all of the test conditions described herein and all of the test methods may not evaluate all exposures for a given project. 4.2 Transverse Load: 4.2.1 This test determines the ultimate wind load resistance of the wall assembly including influence of the framing, sheathing, and means of attachment. 4.3 Vertical Load: 4.3.1 The weight and attachment mechanism of Portland Cement Based Plaster results in a vertical load transfer to the plaster base. This test method determines the ultimate vertical load capacity of the cladding assembly based on taking the specimen to failure. 4.4 Embedment: 4.4.1 Plaster bases serve as a key, reinforcement and attachment mechanism for Portland Cement Based Plaster. The thickness, profile, and material properties of the plaster bases must be such that it is adequately embedded in the Portland Cement Based Plaster. This can be accomplished through use of a self furred non metallic plaster base or other means such as furring strips. This test procedure determines the effectiveness of the furring mechanism to ensure that the minimum embedment is obtained. 4.5 Fastener Pull Through Resistance: 4.5.1 The non metallic lath is secured to the building frame or substrate with fasteners. This test evaluates the fastener attachment effectiveness. 4.6 Alkali Resistance (Glass Fiber Lath Only): 4.6.1 Per E2098. 1.1 These test methods evaluate the performance of vertical wall applications of non metallic plaster bases used with Portland Cement Based Plaster under a variety of test exposures. 1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safe......

Standard Test Methods for Non Metallic Plaster Bases (Lath) Used with Portland Cement Based Plaster in Vertical Wall Applications

ASTM C150/C150M-12 波特兰水泥标准规格

1.1 This specification covers ten types of portland cement, as follows (see Note 2): 1.1.1 Type I8212;For use when the special properties specified for any other type are not required. 1.1.2 Type IA8212;Air-entraining cement for the same uses as Type I, where air-entrainment is desired. 1.1.3 Type II8212;For general use, more especially when moderate sulfate resistance is desired. 1.1.4 Type IIA8212;Air-entraining cement for the same uses as Type II, where air-entrainment is desired. 1.1.5 Type II(MH)8212;For general use, more especially when moderate heat of hydration and moderate sulfate resistance are desired. 1.1.6 Type II(MH)A8212;Air-entraining cement for the same uses as Type II(MH), where air-entrainment is desired. 1.1.7 Type III8212;For use when high early strength is desired. 1.1.8 Type IIIA8212;Air-entraining cement for the same use as Type III, where air-entrainment is desired. 1.1.9 Type IV8212;For use when a low heat of hydration is desired. 1.1.10 Type V8212;For use when high sulfate resistance is desired. Note 18212;Some cements are designated with a combined type classification, such as Type I/II, indicating that the cement meets the requirements of the indicated types and is being offered as suitable for use when either type is desired. Note 28212;Cement conforming to the requirements for all types are not carried in stock in some areas. In advance of specifying the use of cement other than Type I, determine whether the proposed type of cement is, or can be made, available. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Values in SI units [or inch-pound units] shall be obtained by measurement in SI units [or inch-pound units] or by appropriate conversion, using the Rules for Conversion and Rounding given in , of measurements made in other units [or SI units]. Values are stated in only SI units when inch-pound units are not used in practice. 1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

Standard Specification for Portland Cement

ASTM C926-12 硅酸盐水泥基灰浆应用的标准规格

1.1 This specification covers the requirements for the application of full thickness portland cement-based plaster for exterior (stucco) and interior work. 1.2 This specification sets forth tables for proportioning of various plaster mixes and plaster thickness. Note 18212;General information will be found in Annex A1. Design considerations will be found in Annex A2. 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses are approximate and are provided for information purposes only. 1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.5 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.

Standard Specification for Application of Portland Cement-Based Plaster

ASTM C226-12 制造加气水凝水泥用加气剂的标准规格

1.1 This specification covers the requirements and methods for establishing the suitability of a material for use as an air-entraining addition to be interground with the clinker in the manufacture of air-entraining hydraulic cement conforming to Specifications C150, C595, and C1157. 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (Warning8212;Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. )

Standard Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement

ASTM C294-12 混凝土集料成分的标准描述术语

This descriptive nomenclature provides information on terms commonly applied to concrete aggregates. This standard is intended to assist in understanding the meaning and significance of the terms. Many of the materials described frequently occur in particles that do not display all the characteristics given in the descriptions, and most of the described rocks grade from varieties meeting one description to varieties meeting another with all intermediate stages being found. The accurate identification of rocks and minerals can, in many cases, be made only by a qualified geologist, mineralogist, or petrographer using the apparatus and procedures of these sciences. Reference to these descriptions may, however, serve to indicate or prevent gross errors in identification. Identification of the constituent materials in an aggregate may assist in characterizing its engineering properties, but identification alone cannot provide the sole basis for predicting behavior of aggregates in service. Aggregates of any type or combination of types may perform well or poorly in service depending upon the exposure to which the concrete is subjected, the physical and chemical properties of the matrix in which they are embedded, their physical condition at the time they are used, and other factors. Constituents that may occur only in minor amounts in the aggregate may or may not decisively influence its performance. Information about concrete aggregate performance in concrete has been published by ASTM. 1.1 This descriptive nomenclature provides brief descriptions of some of the more commonly occurring, or more important, natural and artificial materials of which mineral aggregates are composed. The descriptions provide a basis for understanding these terms as applied to concrete aggregates. When appropriate, brief observations regarding the potential effects of using the natural and artificial materials in concrete are discussed. Note 18212;These descriptions characterize minerals and rocks as they occur in nature and blast-furnace slag or lightweight aggregates that are prepared by the alteration of the structure and composition of natural material. Information about lightweight aggregates is given in Specifications C330, C331, and C332. 1.2 This standard does not include descriptions of constituents of aggregates used in radiation shielding concrete. See Descriptive Nomenclature C638. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

Standard Descriptive Nomenclature for Constituents of Concrete Aggregates

ASTM C1658/C1658M-12 玻璃纤维石膏板的标准规格

1.1 This specification covers the glass mat gypsum panels described in 1.1.1-1.1.3. 1.1.1 Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration. 1.1.2 Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies. 1.1.3 Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration. (This is distinct from a coated glass mat water-resistant gypsum panel ASTM 1178.) 1.2 Specifications applicable to all glass mat gypsum panels are located in Sections 1-4 and 8-10. Specifications applicable to specific glass mat gypsum panels are located in the following sections: Section Glass mat interior gypsum panel5 Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel6 Glass mat water-resistant gypsum panel7 1.3 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.

Standard Specification for Glass Mat Gypsum Panels

ASTM C474-12 石膏板结构用填缝料的标准试验方法

1.1 These test methods cover the physical testing of joint compound, paper joint tape, glass-mesh joint tape, and an assembly of joint compound and paper joint tape. 1.1.1 Joint treatment materials are specified in Specification C475/C475M. 1.1.2 The joint treatment material described in this standard are for use with gypsum board installed in accordance with Specification C840. 1.2 The test methods appear in the following order: Section Joint Compound Tests: Viscosity 5 Shrinkage 6 Check Cracking 7 Putrefaction 8 Joint Tape Tests: Tensile Strength 9 Width 10 Thickness 11 Paper Joint Tape Tests Dimensional Stability12 Assemblages of Paper Joint Tape and Joint Compound: Bond of Paper Joint Tape to Joint Compound 15 Cracking of Joint Compound at Tape Edges 14 Glass-Mesh Joint Tape Test Skewness13 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in brackets are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction

ASTM C91/C91M-12 砌筑水泥标准规格

1.1 This specification covers three types of masonry cement for use where mortar for masonry is required. 1.2 Units8212;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and Rounding given in Standard , of measurements made in other units. Values are stated in only SI units when inch-pound units are not used in practice. 1.3 The text of this standard refers to notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.4 The following safety hazards caveat pertains only to Sections 16 and 17 of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

Standard Specification for Masonry Cement

ASTM C1749-12 用旋转流变仪测量水硬性水泥凝膏流变特性的标准指南

Rheological properties determined using this guide include plastic viscosity and yield stress as defined by the Bingham model and apparent viscosity. Rheological properties provide information about the workability of cement paste. As an example, the yield stress and plastic viscosity indicate the behavior of a specific cement paste composition. As another example, the apparent viscosity indicates what energy is required to move the suspension at a given strain rate. This test may be used to measure flowability of a cement paste or the influence of a specific material or combination of materials on flowability. Rheological properties may be sensitive to the procedure being used. This guide describes procedures that are expected to provide reproducible results.1.1 This guide covers description of several methods to measure the rheological properties of fresh hydraulic cement paste. All methods are designed to determine the yield stress and plastic viscosity of the material using commercially available instruments and the Bingham model. Knowledge of these properties gives useful information on performance of cement pastes in concrete. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Guide for Measurement of the Rheological Properties of Hydraulic Cementious Paste Using a Rotational Rheometer

ASTM C270-12 砖块工程用灰浆的标准规格

1.1 This specification covers mortars for use in the construction of non-reinforced and reinforced unit masonry structures. Four types of mortar are covered in each of two alternative specifications: (1) proportion specifications and (2) property specifications. Note 18212;When the property specification is used to qualify masonry mortars, the testing agency performing the test methods should be evaluated in accordance with Practice C1093. 1.2 The proportion or property specifications shall govern as specified. 1.3 When neither proportion or property specifications are specified, the proportion specifications shall govern, unless data are presented to and accepted by the specifier to show that mortar meets the requirements of the property specifications. 1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.5 The terms used in this specification are identified in Terminologies C1180 and C1232. 1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.7 The following safety hazards caveat pertains only to the test methods section of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Mortar for Unit Masonry