【国外标准】 Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration
本网站 发布时间:
2024-02-28
开通会员免费在线看70000余条国内标准,赠送文本下载次数,单本最低仅合13.3元!还可享标准出版进度查询、定制跟踪推送、标准查新等超多特权!  
查看详情>>
标准简介
适用范围:
4.1 This test method covers the laboratory evaluation of the electrical conductance of concrete samples to provide a rapid indication of their resistance to chloride ion penetration. In most cases the electrical conductance results have shown good correlation with chloride ponding tests, such as AASHTO T259, on companion slabs cast from the same concrete mixtures (Refs 1-5).4.2 This test method is suitable for evaluation of materials and material proportions for design purposes and research and development.4.3 Sample age has significant effects on the test results, depending on the type of concrete and the curing procedure. Most concretes, if properly cured, become progressively and significantly less permeable with time.4.4 This test method was developed originally for evaluations of alternative materials, but in practice its use has evolved to applications such as quality control and acceptance testing. Factors such as ingredient materials used in concrete mixtures and the method and duration of curing test specimens affect the results of this test (see Note 1). When this method is used for mixture qualification and acceptance testing, it is imperative that the curing procedures and the age at time of testing be clearly specified.NOTE 1: When using this test for determining acceptability of concrete mixtures, statistically-based criteria and test age for prequalification, or for acceptance based on jobsite samples, should be stated in project specifications. Acceptance criteria for this test should consider the sources of variability affecting the results and ensure balanced risk between supplier and purchaser. The anticipated exposure conditions and time before a structure will be put into service should be considered. One approach to establishing criteria is discussed in Ref (6).4.5 Table X1.1 in Appendix X1 provides a qualitative relationship between the results of this test and the chloride ion penetrability of concrete.4.6 Care should be taken in interpreting results of this test when it is used on surface-treated concretes, for example, concretes treated with penetrating sealers. The results from this test on some such concretes indicate low resistance to chloride ion penetration, while 90 day chloride ponding tests on companion slabs show a higher resistance.4.7 The details of the test method apply to 100 mm nominal diameter specimens. This includes specimens with actual diameters ranging from 95 mm to 100 mm. Other specimen diameters may be tested with appropriate changes in the applied voltage cell design (see 7.5 and Fig. 1).FIG. 1 Applied Voltage Cell (Construction Drawing)4.7.1 For specimen diameters other than 95 mm, the test result value for total charge passed must be adjusted following the procedure in 11.2. For specimens with diameters less than 95 mm, particular care must be taken in coating and mounting the specimens to ensure that the conductive solutions are able to contact the entire end areas during the test.1.1 This test method covers the determination of the electrical conductance of concrete to provide a rapid indication of its resistance to the penetration of chloride ions. This test method is applicable to types of concrete where correlations have been established between this test procedure and long-term chloride ponding procedures such as those described in AASHTO T 259. Examples of such correlations are discussed in Refs (1-5).21.2 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 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.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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
标准号:
ASTM C1202-22e1
标准名称:
Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration
英文名称:
Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration标准状态:
Active-
发布日期:
-
实施日期:
出版语种:
- 推荐标准
- 国家标准计划
- BS EN IEC 61753-071-02:2020+A1:2024 Fibre optic interconnecting devices and passive components. Performance standard
- 24/30492859 DC BS EN IEC 61753-1 Fibre optic interconnecting devices and passive components - Performance standard
- 24/30491443 DC standard
- 24/30489392 DC BS EN IEC 62358 Ferrite cores. Standard inductance factor for gapped cores and its tolerance
- BS ISO 19848:2024 - TC Tracked Changes. Ships and marine technology. Standard data for shipboard machinery and equipment
- BS ISO 19848:2024 Ships and marine technology. Standard data for shipboard machinery and equipment
- BS IEC 61360-7:2024 Standard data element types with associated classification scheme
- 24/30487130 DC BS EN 50566:2017/A2:2024 Product standard to demonstrate the compliance of wireless communication
- 24/30486472 DC - Product standard
- KS M ISO 4259-4 석유 및 관련 제품 — 측정 방법과 결과의 정밀도 — 제4부: 개별 실험실에서 표준 시험방법의 실행에 대한 ‘통계적 관리’ 상태를 확인하기 위한 통계적 관리도의 사용
- KS C IEC 61340-4-6 정전기학 — 제4-6부: 구체적 적용 분야에 대한 표준 시험방법 — 손목접지대
- KS C IEC 61340-4-7 정전기학 — 제4-7부: 구체적 적용 분야에 대한 표준 시험방법 — 이온화
- KS C IEC 61340-4-8 정전기학 — 제4-8부: 구체적 적용 분야에 대한 표준 시험방법 — ESD 차폐성 — 봉투
- 24/30485973 DC standard
- BS EN 14662-1:2023 - TC Tracked Changes. Ambient air quality. Standard method for measurement of benzene concentrations