Q11 水泥 标准查询与下载



共找到 877 条与 水泥 相关的标准,共 59

Methods of testing cement. Determination of strength

ICS
91.100.10
CCS
Q11
发布
2016-05-31
实施
2016-05-31

Methods of testing cement. Determination of the water-soluble chromium (VI) content of cement

ICS
91.100.10
CCS
Q11
发布
2016-05-31
实施
2016-05-31

Determination of total sulfur, total phosphorus and total potassium in soil by inductively coupled plasma atomic emission spectrometry

ICS
91.100.10
CCS
Q11
发布
2016-05-30
实施
2016-06-30

This part of EN 196 specifies the method for the determination of the water-soluble chromium (VI) content of cement. A reference method is described consisting of two stages, an extraction procedure and an analysis of the filtered extract. Guidance on other extraction procedures, suitable for screening tests, for factory production control or other purposes, is given but in case of dispute or failure to comply with a regulatory limit only the reference method is used. The reference method has alternatives whereby the filtered extract may be subjected to an oxidation step or not. The criteria by which the appropriate procedure is selected are set down. Other instrumental procedures may be used for the analysis of the filtered extract provided they are calibrated against the analysis of the filtered extract using the reference procedure. In the case of a dispute, only the reference method is used. Annex A sets out a normative procedure to be followed in case this test method is used as the basis for evaluation of conformity of a cement with the regulatory limit in Regulation (EC) 1907/20062. This part of EN 196 describes a method that applies to cements. It may have wider applicability but this would need to be verified by testing on a product-by-product basis. Guidance in the possible application of this European Standard to the determination of the water-soluble chromium (VI) content of cement-containing preparations is given in Annex B. Annexes C and D provide information on other test procedures based on paste extraction and thus depart from the performance of cement in its normal conditions of use. They may be carried out with or without the oxidation process. Users should be aware that results using these methods might be significantly different to those obtained by the reference method. In the case of dispute or failure to comply with the regulatory limit only the reference method is used. Annex E provides guidance on a method for determination of the excess reducing agent content of cement as used in the factory internal control system of some countries. Manufacturers using such an internal control method should ensure themselves of the relevance of results in comparison with testing by the reference method.

Methods of testing cement - Part 10: Determination of the water-soluble chromium (VI) content of cement

ICS
91.100.10
CCS
Q11
发布
2016-05
实施

This part of EN 196 describes the method for the determination of the compressive and, optionally, the flexural strength of cement mortar. The method applies to common cements and to other cements and materials, the standards for which call up this method. It may not apply to other cement types that have, for example, a very short initial setting time. The method is used for assessing whether the compressive strength of cement is in conformity with its specification and for validation testing of a CEN Standard sand, EN 196-1, or alternative compaction equipment. This part of EN 196 describes the reference equipment and procedure and allows alternative compaction equipment and procedures to be used provided that they have been validated in accordance with the appropriate provisions in this document. In the event of a dispute, only the reference equipment and procedure are used.

Methods of testing cement - Part 1: Determination of strength

ICS
91.100.10
CCS
Q11
发布
2016-04
实施

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 1: 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 IEEE/ASTM SI 10, 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

ICS
91.100.10
CCS
Q11
发布
2016
实施

1.1 This specification covers ten types of portland cement, as follows (see Note 2): 1.1.1 Type I—For use when the special properties specified for any other type are not required. 1.1.2 Type IA—Air-entraining cement for the same uses as Type I, where air-entrainment is desired. 1.1.3 Type II—For general use, more especially when moderate sulfate resistance is desired. 1.1.4 Type IIA—Air-entraining cement for the same uses as Type II, where air-entrainment is desired. 1.1.5 Type II(MH)—For general use, more especially when moderate heat of hydration and moderate sulfate resistance are desired. 1.1.6 Type II(MH)A—Air-entraining cement for the same uses as Type II(MH), where air-entrainment is desired. 1.1.7 Type III—For use when high early strength is desired. 1.1.8 Type IIIA—Air-entraining cement for the same use as Type III, where air-entrainment is desired. 1.1.9 Type IV—For use when a low heat of hydration is desired. 1.1.10 Type V—For use when high sulfate resistance is desired. Note 1: 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 2: 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,......

Standard Specification for Portland Cement

ICS
91.100.10
CCS
Q11
发布
2016
实施

3.1 The purpose of this guide is to estimate the SO3 content for a hydraulic cement that gives maximum compressive strength in mortar made and cured at 23°C. The value obtained is one way to establish an appropriate level of sulfate in the manufacture of cements specified in Specifications C150, C595 and C1157. 3.2 The SO3 content of a cement giving maximum compressive strength is different at different ages of mortar; typically this SO3 content is higher at 3 days than the 24-h, and often higher for 7 days than that for 3 days. A manufacturer can choose the age of 24-h, 3 days or 7 days for specimens at which to determine optimum SO3 content. 3.3 This guide indicates optimum SO3 content for cement in mortar made and cured at a standard temperature of 23.0 ± 2.0°C (73.5 ± 3.5°F). The optimum SO3 increases with increasing temperature and may increase when water-reducing admixtures are used. 3.4 It should not be assumed that the optimum SO3 estimated in this guide is the same SO3 content for optimum performance of a concrete prepared from the cement. 3.5 The guide is applicable to cements specified in Specifications C150, C595, and C1157. 1.1 This guide describes the determination of approximate optimum SO3 for maximum compressive strength at 24 h, 38201;days, or 7 days by measuring the change in strength produced in hydraulic cement mortar as a result of substituting calcium sulfate for a portion of the cement. 1.2 This guide refers to the sulfur trioxide (SO3) content of the cement only. Slag cements and occasionally other hydraulic cements can contain sulfide or other forms of sulfur. The determination of SO3 content by rapid methods may include these other forms, and may therefore produce a significant error. If a significant error occurs, analyze the cement for SO3 content using the reference test method of Test Methods C114 for sulfur trioxide. 1.3 Values stated as SI units are to be regarded as standard. 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 app......

Standard Guide for Approximation of Optimum SO3 in Hydraulic Cement Using Compressive Strength

ICS
91.100.10
CCS
Q11
发布
2016
实施

本规程适用于现浇混凝土结构和预制混凝土构件所采用的 PVC复合塑料模板体系的设计、制作和施工应用。

Technical specification for PVC composite plastic formwork

ICS
91.100
CCS
Q11
发布
2015-12-14
实施
2016-04-01

Energy Consumption Quotas per Unit Product of Cement

ICS
91.100.10
CCS
Q11
发布
2015-10-13
实施
2016-04-13

本标准规定了水泥熟料烧成的脱硝系统的技术应用要求,包括术语和定义、总则、脱硝方法应用与要求、电气与自动化、劳动安全、职业卫生与消防、系统调试、培训、验收等应遵循的技术要求。 本标准适用于水泥熟料生产企业的烧成系统脱硝方法(窑头低氮燃烧技术、空气分级燃烧技术、燃料分级燃烧技术、选择性非催化还原法),暂不包含因协同处置废弃物产生脱硝效果和SCR等正在发展的方法。

Application code for denitrification technology of cement kiln system

ICS
91.100.10
CCS
Q11
发布
2015-10-10
实施
2016-03-01

Cement - Composition, specifications and conformity criteria for very low heat special cements; German version EN 14216:2015

ICS
91.100.10
CCS
Q11
发布
2015-09
实施

Cement. Composition, specifications and conformity criteria for very low heat special cements

ICS
91.100.10
CCS
Q11
发布
2015-07-31
实施
2015-07-31

This European Standard defines and gives the specifications of six distinct very low heat special cement products and their constituents. The definition of each cement includes the proportions in which the constituents are to be combined to produce these distinct products in a single strength class having a limited heat of hydration value. The definition also includes requirements the constituents have to meet and the mechanical, physical, chemical and heat of hydration requirements for these products. This European Standard also states the conformity criteria and the related rules. Necessary durability requirements are also given. In addition to the specified requirements, an exchange of additional information between the cement producer and user can be helpful. The procedures for such an exchange are not within the scope of this European Standard but should be dealt with in accordance with national standards or regulations or can be agreed between the parties concerned. NOTE 1 The word "cement" in this European Standard is used to refer to very low heat special cement unless otherwise indicated. NOTE 2 The risk of early-age thermal cracking in concrete depends upon the properties and execution and is, therefore, also dependent on factors other than the heat of hydration of the cement.

Cement - Composition, specifications and conformity criteria for very low heat special cements

ICS
91.100.10
CCS
Q11
发布
2015-07-01
实施

Supersulfated cement - Composition, specifications and conformity criteria

ICS
91.100.10
CCS
Q11
发布
2015-06-06
实施
2015-06-06

Supersulfated cement - Composition, specifications and conformity criteria

ICS
91.100.10
CCS
Q11
发布
2015-06-06
实施
2015-06-06

Supersulfated cement - Composition, specifications and conformity criteria; German version EN 15743:2010+A1:2015

ICS
91.100.10
CCS
Q11
发布
2015-06
实施

Methods for chemical analysis of cements (Amendment 1)

ICS
91.100.10
CCS
Q11
发布
2015-03-20
实施

Physical testing methods for cement

ICS
91.100.10
CCS
Q11
发布
2015-03-20
实施

Determination of the heat of hydration of cement -- Solution method

ICS
91.100.10
CCS
Q11
发布
2015-03-20
实施



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