Q12 水泥混合材与外加剂 标准查询与下载



共找到 167 条与 水泥混合材与外加剂 相关的标准,共 12

This standard is an Amendment of Polymer dispersions and redispersible polymer powders for cement modifiers.

Polymer dispersions and redispersible polymer powders for cement modifiers (Amendment 1)

ICS
91.100.10
CCS
Q12
发布
2008-03-20
实施
2008-03-21

1.1 This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is incorporated during manufacture of the cement. 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 The effect of additions in cement may markedly change properties other than those they are intended to modify. This specification is designed to test for such changes. Table 1 sets forth values for those properties of cement pastes and mortars that would permit a judgment of the changes effected by an addition. Likewise, Table 2 sets forth similar criteria for concrete. Certain additions may be found effective for more than one purpose as indicated in 3.1.4 and 3.1.5.

Standard Specification for Functional Additions for Use in Hydraulic Cements

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2008
实施

1.1 This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is incorporated during manufacture of the cement. 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 The effect of additions in cement may markedly change properties other than those they are intended to modify. This specification is designed to test for such changes. Table 1 sets forth values for those properties of cement pastes and mortars that would permit a judgment of the changes effected by an addition. Likewise, Table 2 sets forth similar criteria for concrete. Certain additions may be found effective for more than one purpose as indicated in 3.1.4 and 3.1.5. TABLE 1 Criteria for Evaluating Neat Cement and Mortar Containing Functional Cement Additions TestsType of Addition Water Reducing RetardingAcceleratingWater-Reducing and RetardingWater-Reducing and AcceleratingSet-Control Normal consistency, deviation from control, percentage pointsA −1.0 min+1.0 max+1.0 max −1.0 min −1.0 mm±1.0 max Standard consistency (flow) deviation from control, percentage pointsA −4.0 min+2.0 max+2.0 max −4.0 min −4.0 min±2.0 max Setting time, (Gillmore) deviation from control, h:min Initial At least ...1:00 laterB 1:00 laterB ... Not more than 1:00 earlier3:30 later1:30 earlier

Standard Specification for Functional Additions for Use in Hydraulic Cements

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2008
实施

本标准规定了硅酸盐建材制品中废渣掺量的测定方法。 本标准适用于硅酸盐建材制品中掺加的粉煤灰,磷石膏,钢渣,煤矸石等废渣含量的测定。

Test methods for waste residue in silicate building material products

ICS
91.100.10
CCS
Q12
发布
2007-09-22
实施
2008-04-01

本标准规定了用于水泥混凝土中的聚羧酸系高性能减水剂的术语和定义、分类与标记、要求、试验方法、检验规则、包装、出厂、贮存等。 本标准适用于在水泥混凝土中掺用的聚羧酸系高性能减水剂。

Polycarboxylates high performance water-reducing admixture

ICS
91.100.10
CCS
Q12
发布
2007-08-01
实施
2007-12-01

Describes a method to determine the fineness of cementitious materials of a hydraulic or pozzolanic nature (or both) in powder form.

Fineness of cement extenders (45 ?m sieve method)

ICS
91.100.10
CCS
Q12
发布
2007-01-26
实施
2007-01-26

The heat of hydration of a calcium aluminate based castable is liberated over a short period of time (as compared to Portland cement). This makes it easy to measure the heat profile using off-the-shelf thermocouple equipment. The heat profile can be used to make inferences about the setting and strength gain behavior of a castable and sometimes the working time of a castable. Factors that should be controlled when comparing two castables include: size, shape and mass of cast object, start temperature of the mix, temperature of environment, and the thermal conductivity of the environment. If these factors are held constant, then the two castables heat profiles can be compared. The amount of heat rise created by the castable shall be a minimum of 5°F. If this is not achieved, then either a larger sample or better insulation (or both) should be used to increase the measurable heat release. Varying the amount of cement in the castable, the amount of water, the type and quantity of admixtures, and so forth, will change the shape, maximum temperature and time to maximum temperature of the curve. Following is an example of a curve generated for an LCC (see Fig. 1) that does exhibit two peaks, the first one marking the end of working time. In this curve one could also infer that the start temperature of the mix was 24°C and also that the hydraulic strength gain reaction was significantly started, but not completed by 6 h. FIG. 1 Example of LCC Exo Profile1.1 This guide applies to all castables with a reactive binder system that produces a measurable heat profile during the setting and hardening process. The majority of these systems will have calcium aluminate cement as one component of the binder system.1.2 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 to determine the applicability of regulatory limitations prior to use.

Standard Guide for Measuring the Reactivity of Hydraulic Refractory Castables using Exothermic Profile

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2007
实施

Thermal power curves are used to evaluate the isothermal hydration kinetics of the combined mixture of different materials during the early period after being mixed with water. These isothermal power curves, or hydration profiles, may provide indications relative to setting characteristics, compatibility of different materials, sulfate balance and early strength development. The isothermal hydration profiles can also be used to evaluate the effects of compositions, proportions, and time of addition of materials as well as curing temperature. Special care must be used in evaluating extended retardation with paste specimens, which have been shown to overestimate the retardation of some mixtures containing cement, SCM, and admixtures. This procedure can be used to measure the effect of chemical admixtures on the cement hydration profile. In many cases, the addition of chemical admixture changes the kinetics of cement hydration. Although this technique has been used historically to understand issues related to setting and slump loss, it must be emphasized that isothermal calorimetry results cannot predict concrete performance definitely, either positively or negatively. Extensive verification in concrete at planned dosages and temperatures, and at higher dosages, is needed. Isothermal calorimetry is an effective tool to identify sensitivities, so that concrete testing can be efficiently planned and performed. This practice provides a means of assessing the relative hydration performance of various test mixtures compared with control mixtures that are prepared in a similar manner. The procedure and apparatus can be used to monitor the thermal power from pastes and mortars alone or in combination with chemical admixtures. The isothermal calorimeter described here can be used to measure the thermal power and heat of hydration of mortars prepared independently or obtained by wet sieving from concrete in accordance with Practice C 172.1.1 This practice describes the apparatus and procedure for measuring relative differences in hydration kinetics of hydraulic cementitious mixtures, either in paste or mortar (See Note 1), including those containing admixtures, various supplementary cementitious materials (SCM), and other fine materials by measuring the thermal power using an isothermal calorimeter. Note 18212; Paste specimens are often preferred for mechanistic research when details of individual reaction peaks are important or for particular calorimetry configurations. Mortar specimens may give results that have better correlation with concrete setting and early strength development and are often preferred to evaluate different mixture proportions for concrete. Both paste and mortar studies have been found to be effective in evaluating concrete field problems due to incompatibility of materials used in concrete mixtures. 1.2 UnitsThe 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. (Warning8212;Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. )

Standard Practice for Measuring Hydration Kinetics of Hydraulic Cementitious Mixtures Using Isothermal Calorimetry

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2007
实施

The purpose of this test method is to determine the degree to which a cement mortar develops early stiffening. It is intended for use by those interested in methods for determining the potential early stiffening of hydraulic cement. When used for estimating the relative tendency of a cement to manifest early stiffening, a judgment may be made by comparing the behavior in the penetration series (see 10.4.1 and 10.4.2) and the remix procedure (see 10.4.3) to differentiate a relatively less serious and less persistent tendency to early stiffening (false set) from one that is more persistent and, consequently, more serious (flash set). Severe false setting in a cement may cause difficulty from a placing and handling standpoint, but it is not likely to cause difficulties where concrete is mixed for a longer time than usual, as usually occurs in transit mixing, or where it is remixed prior to placing or transporting, in concrete pumping operations. It is most likely noticed where concrete is mixed for a short period of time in stationary mixers and transported to the forms in non-agitating equipment, as on some paving jobs, and when concrete is made in an on-site batch plant. Cements with severe false setting usually require slightly more mixing water to produce the same consistency, which may result in slightly lower strengths and increased drying shrinkage. Early stiffening resulting from false set is not likely to cause a cement to fail the applicable time of setting requirement. Early stiffening resulting from flash set, depending on severity, can cause a cement to fail the applicable time of setting requirement.1.1 This test method covers the determination of early stiffening in hydraulic-cement mortar.1.2 The values stated in SI units are the standard. The values in parentheses are for information only.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 cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. The use of gloves, protective clothing, and eye protection is recommended. Wash contact area with copious amounts of water after contact. Wash eyes for a minimum of 15 min. Avoid exposure of the body to clothing saturated with the liquid phase of the unhardened material. Remove contaminated clothing immediately after exposure.)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 Test Method for Early Stiffening of Hydraulic Cement (Mortar Method)

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2007
实施

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 C 150, C 595, and C 1157.1.2 The values stated in SI units are to be regarded as the standard.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 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

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2007
实施

Describes a method to determine the effect of extenders used with cement on the reduction of alkali-silica reaction.

Effect of extenders, used with cement, on the reduction of expansion caused by alkali-silica reaction (accelerated mortar prism method)

ICS
91.100.10
CCS
Q12
发布
2006-10-20
实施

本标准规定了混凝土抗硫酸盐类侵蚀防腐剂的术语和定义、要求、试验方法、检验规则、包装、标志、运输与贮存。 本标准适用于混凝土抗硫酸盐类侵蚀防腐剂。

Sulfate corrosion-resistance admixtures for concrete

ICS
91.100.99
CCS
Q12
发布
2006-05-12
实施
2006-11-01

本标准规定了用于水泥中的磷石膏的产品定义、技术要求、试验方法、检验规则及贮存与运输。 本标准适用于制做水泥凝缓剂的磷石膏。

Phosphogypsum used for cement production

ICS
CCS
Q12
发布
2006-02-22
实施
2006-05-01

1.1 This specification covers materials proposed for use as admixtures to be added to a portland-cement shotcrete mixture for the purpose of altering the properties of the mixture.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.1.2 The values stated in inch-pound units are to be regarded as the standard.

Standard Specification for Admixtures for Shotcrete

ICS
91.100.30 (Concrete and concrete products)
CCS
Q12
发布
2006
实施

This test method allows direct determination of the proportion of some individual phases in cement or portland-cement clinker. Thus it provides an alternative to the indirect estimation of phase proportion using the equations in Specification C 150 (Annex A1). This test method assumes that the operator is qualified to operate an X-ray diffractometer and to interpret X-ray diffraction spectra. This test method may be used as part of a quality control program in cement manufacturing. This test method may be used in predicting properties and performance of hydrated cement and concrete that are a function of phase composition. QXRD provides a bulk analysis (that is, the weighted average composition of several grams of material). Therefore, results may not agree precisely with results of microscopical methods.1.1 This test method covers direct determination of the proportion by mass of individual phases in portland cement or portland-cement clinker using quantitative X-ray (QXRD) analysis. The following phases are covered by this standard: alite (tricalcium silicate), belite (dicalcium silicate), aluminate (tricalcium aluminate), ferrite (tetracalcium aluminoferrite), periclase (magnesium oxide), gypsum (calcium sulfate dihydrate), bassanite (calcium sulfate hemihydrate), anhydrite (calcium sulfate), and calcite (calcium carbonate).1.2 This test method specifies certain general aspects of the analytical procedure, but does not specify detailed aspects. Recommended procedures are described, but not specified. Regardless of the procedure selected, the user shall demonstrate by analysis of certified reference materials (CRM''s) that the particular analytical procedure selected for this purpose qualifies (that is, provides acceptable precision and bias) (see Note 1). The recommended procedures are ones used in the round-robin analyses to determine the precision levels of this test method. Note 0A similar approach was used in the performance requirements for alternative methods for chemical analysis in Test Methods C 114.1.3 The values stated in SI units shall be regarded as the standard.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. For specific hazards, see Section 9.

Standard Test Method for Determination of the Proportion of Phases in Portland Cement and Portland-Cement Clinker Using X-Ray Powder Diffraction Analysis

ICS
91.100.10 (Cement. Gypsum. Lime. Mortar)
CCS
Q12
发布
2006
实施

Describes a method to determine the free water content of Portland cement extenders.

Free water content of Portland cement extenders

ICS
91.100.10
CCS
Q12
发布
2005-11-21
实施
2005-11-21

Flash setting admixtures for shotcrete

ICS
91.100.30
CCS
Q12
发布
2005-04-11
实施
2005-08-01

本标准规定了喷射混凝土用速凝剂的术语和定义、分类、要求、试验方法、检验规则、包装、运输和贮存等。 本标准适用于水泥混凝土采用喷射法施工时掺加的速凝剂。

Flash setting admixtures for shotcrete

ICS
91.100.30
CCS
Q12
发布
2005-04-11
实施
2005-08-01

Concrete anti-freezing admixtures

ICS
91.100.30
CCS
Q12
发布
2004-10-20
实施
2005-04-01

Concrete anti-freezing admixtures

ICS
91.100.30
CCS
Q12
发布
2004-10-20
实施
2005-04-01



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