显微孔隙检测标准

发布时间：2023-02-12 15:54:06 • 阅读量： • 来源：中析研究所

显微孔隙检测标准相关信息

GB/T 3488.4-2022 硬质合金显微组织的金相测定第4部分：孔隙度、非化合碳缺陷和脱碳相的金相测定
简介：
信息：ICS：77.160 CCS：H16 发布：2022-10-12 实施：2022-10-12

YB/T 4928-2021 焦炭孔隙构造及原料煤岩相显微分析方法
简介：
信息：ICS：75.160.10 CCS：H32 发布：2021-12-02 实施：2022-04-01

DIN 30902-2016 黑色金属材料的热处理. 氮化和碳氮共渗黑色金属零件的化合物层深度和孔隙度的光显微测定
简介：
信息：ICS：25.220.40;77.080.01 CCS：H40 发布：2016-12 实施：

DIN EN ISO 4499-4-2016 硬质金属.显微组织的金相学测定.第4部分:孔隙度,碳缺陷和η相含量的表征(ISO 4499-4-2016).德文版本EN ISO 4499-4-2016
简介：
信息：ICS：77.040.99;77.160 CCS：发布：2016-10 实施：

BS EN ISO 4499-4-2016 硬质金属. 显微组织的金相测定. 孔隙度, 碳缺陷和η相含量的表征
简介：
信息：ICS：77.040.99;77.160 CCS：H70 发布：2016-03-31 实施：2016-03-31

EN ISO 4499-4-2016 硬质合金显微组织的金相测定第4部分:表征孔隙率,碳缺陷和η相的含量(ISO 4499-4:2016)
简介：Dieser Teil der ISO 4499 legt Verfahren der metallographischen Bestimmung für das Auftreten, den Typ und die Verteilung von Porosität, freiem Kohlenstoff und Eta-Phase in Hartmetallen fest.
信息：ICS：77.040.99;77.160 CCS：H70 发布：2016-03 实施：

ISO 4499-4:2016 硬质合金 - 显微组织的金相测定 - 第4部分:孔隙度碳缺陷和Eta相含量的表征
简介：
信息：ICS：77.160 CCS：发布：2016-02-15 实施：

ISO 4499-4-2016 硬质金属.显微组织的金相学测定.第4部分:孔隙度,碳缺陷和η相含量的表征
简介：
信息：ICS：77.040.99;77.160 CCS：H70 发布：2016-02 实施：

ASTM C457/C457M-2012 硬化混凝土空气孔隙系统参数显微测定的标准试验方法
简介：5. Significance and UseTop Bottom 5.1 The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to damage by freezing and thawing. Hence, this test method can be used to develop data to estimate the likelihood of damage due to cyclic freezing and thawing or to explain why it has occurred. The test method can also be used as an adjunct to the development of products or procedures intended to enhance the resistance of concrete to cyclic freezing and thawing (1). 5.2 Values for parameters of the air-void system can be obtained by either of the procedures described in this test method. 5.3 No provision is made for distinguishing among entrapped air voids, entrained air voids, and water voids. Any such distinction is arbitrary, because the various types of voids intergrade in size, shape, and other characteristics. Reports that do make such a distinction typically define entrapped air voids as being larger than 1 mm in at least one dimension being irregular in shape, or both. The honey-combing that is a consequence of the failure to compact the concrete properly is one type of entrapped air void (9, 10). 5.4 Water voids are cavities that were filled with water at the time of setting of the concrete. They are significant only in mixtures that contained excessive mixing water or in which pronounced bleeding and settlement occurred. They are most common beneath horizontal reinforcing bars, pieces of coarse aggregate and as channelways along their sides. They occur also immediately below surfaces that were compacted by finishing operations before the completion of bleeding. 5.5 Application of the paste-air ratio procedure is necessary when the concrete includes large nominal maximum size aggregate, such as 50 mm [2 in.] or more. Prepared sections of such concrete should include a maximum of the mortar fraction, so as to increase the number of counts on air voids or traverse across them. The ratio of the volume of aggregate to the volume of paste in the original mix must be accurately known or estimated to permit the calculation of the air-void systems parameters from the microscopically determined paste-air ratio.Note 1???The air-void content determined in accordance with this test method usually agrees closely with the value determined on the fresh concrete in accordance with Test Methods C138/C138M, C173/C173M, or C231 (
信息：ICS：91.100.30 (Concrete and concrete products) CCS：Q13 发布：2012 实施：

ASTM C457/C457M-2011 硬化混凝土孔隙系统参数显微测定的标准试验方法
简介：The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to damage by freezing and thawing. Hence, this test method can be used to develop data to estimate the likelihood of damage due to cyclic freezing and thawing or to explain why it has occurred. The test method can also be used as an adjunct to the development of products or procedures intended to enhance the resistance of concrete to cyclic freezing and thawing (1). Values for parameters of the air-void system can be obtained by either of the procedures described in this test method. No provision is made for distinguishing among entrapped air voids, entrained air voids, and water voids. Any such distinction is arbitrary, because the various types of voids intergrade in size, shape, and other characteristics. Reports that do make such a distinction typically define entrapped air voids as being larger than 1 mm in at least one dimension being irregular in shape, or both. The honey-combing that is a consequence of the failure to compact the concrete properly is one type of entrapped air void (9, 10). Water voids are cavities that were filled with water at the time of setting of the concrete. They are significant only in mixtures that contained excessive mixing water or in which pronounced bleeding and settlement occurred. They are most common beneath horizontal reinforcing bars, pieces of coarse aggregate and as channelways along their sides. They occur also immediately below surfaces that were compacted by finishing operations before the completion of bleeding. Application of the paste-air ratio procedure is necessary when the concrete includes large nominal maximum size aggregate, such as 50 mm [2 in.] or more. Prepared sections of such concrete should include a maximum of the mortar fraction, so as to increase the number of counts on air voids or traverse across them. The ratio of the volume of aggregate to the volume of paste in the original mix must be accurately known or estimated to permit the calculation of the air-void systems parameters from the microscopically determined paste-air ratio. Note 18212;The air-void content determined in accordance with this test method usually agrees closely with the value determined on the fresh concrete in accordance with Test Methods C138/C138M, C173/C173M, or C231 (11). However, significant differences may be observed if the sample of fresh concrete is consolidated to a different degree than the sample later examined microscopically. For concrete with a relatively high air content (usually over 7.5 %), the value determined microscopically may be higher by one or more percentage points than that determined by Test Method C231.1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete (1). Two procedures are described: 1.1.1 Procedure A, the linear-traverse method (2, 3). 1.1.2 Procedure B, t......
信息：ICS：91.100.30 (Concrete and concrete products) CCS：Q13 发布：2011 实施：

ASTM C457/C457M-2010 硬化混凝土中空气孔隙系统参数的显微测定用标准试验方法
简介：The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to damage by freezing and thawing. Hence, this test method can be used to develop data to estimate the likelihood of damage due to cyclic freezing and thawing or to explain why it has occurred. The test method can also be used as an adjunct to the development of products or procedures intended to enhance the resistance of concrete to cyclic freezing and thawing (1). Values for parameters of the air-void system can be obtained by either of the procedures described in this test method. No provision is made for distinguishing among entrapped air voids, entrained air voids, and water voids. Any such distinction is arbitrary, because the various types of voids intergrade in size, shape, and other characteristics. Reports that do make such a distinction typically define entrapped air voids as being larger than 1 mm in at least one dimension being irregular in shape, or both. The honey-combing that is a consequence of the failure to compact the concrete properly is one type of entrapped air void (9, 10). Water voids are cavities that were filled with water at the time of setting of the concrete. They are significant only in mixtures that contained excessive mixing water or in which pronounced bleeding and settlement occurred. They are most common beneath horizontal reinforcing bars, pieces of coarse aggregate and as channelways along their sides. They occur also immediately below surfaces that were compacted by finishing operations before the completion of bleeding. Application of the paste-air ratio procedure is necessary when the concrete includes large nominal maximum size aggregate, such as 50 mm [2 in.] or more. Prepared sections of such concrete should include a maximum of the mortar fraction, so as to increase the number of counts on air voids or traverse across them. The ratio of the volume of aggregate to the volume of paste in the original mix must be accurately known or estimated to permit the calculation of the air-void systems parameters from the microscopically determined paste-air ratio. Note 18212;The air-void content determined in accordance with this test method usually agrees closely with the value determined on the fresh concrete in accordance with Test Methods C138/C138M, C173/C173M, or C231 (11). However, significant differences may be observed if the sample of fresh concrete is consolidated to a different degree than the sample later examined microscopically. For concrete with a relatively high air content (usually over 7.5 %), the value determined microscopically may be higher by one or more percentage points than that determined by Test Method C231.1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete (1). Two procedures are described: 1.1.1 Procedure A, the linear-traverse method (2, 3). 1.1.2 Procedure B, t......
信息：ICS：91.100.30 (Concrete and concrete products) CCS：Q13 发布：2010 实施：

ASTM C457-2006 显微法测定硬化混凝土中孔隙系统参数的标准试验方法
简介：1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete (). Two procedures are described: 1.1.1 Procedure A, the linear-traverse method (, ). 1.1.2 Procedure B, the modified point-count method (, , , ). 1.2 This test method is based on prescribed procedures that are applied to sawed and lapped sections of specimens of concrete from the field or laboratory. 1.3 It is intended to outline the principles of this test method and to establish standards for its adequate performance but not to describe in detail all the possible variations that might be used to accomplish the objectives of this test method. 1.4 The values stated in SI units are to be regarded as the standard. The values in parentheses are provided for information purposes only. This standard does not purport to address all of the safety concerns 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 hazard statements see and .
信息：ICS： CCS：Q13 发布：2006 实施：

ASTM C457-1998 硬化混凝土中孔隙系统参数的显微测定的标准试验方法
简介：1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete (1). Two procedures are described: 1.1.1 Procedure A , the linear-traverse method (2, 3). 1.1.2 Procedure B , the modified point-count method (3, 4, 5, 6). 1.2 This test method is based on prescribed procedures that are applied to sawed and lapped sections of specimens of concrete from the field or laboratory. 1.3 It is intended to outline the principles of this test method and to establish standards for its adequate performance but not to describe in detail all the possible variations that might be used to accomplish the objectives of this test method. 1.4 The values stated in inch-pound units are to be regarded as the standard. 1.5 This standard does not purport to address all of the safety problems 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 hazard statements see Notes 3 and 6.
信息：ICS：91.100.30 (Concrete and concrete products) CCS：Q13 发布：1998 实施：