ASTM C0845_C0845M-24
Standard Specification for Expansive Hydraulic Cement
| Označení normy: | ASTM C0845_C0845M-24 |
| Vydáno: | 01.12.2024 |
| Status: | Active |
| Počet stran: | 3 |
| Sekce: | 04.01 |
| Označení: | calcium aluminate; calcium aluminosulfate; calcium oxide; calcium silicate; calcium sulfate; cement; expansive; hydraulic; shrinkage-compensated; tricalcium aluminate; |
| ASTM označení: | ASTM C845/C845M |
| Nahrazuje: | C0845_C0845M-18 |
This specification covers hydraulic cements that expand during the early hardening period after setting. The cement covered by this specification is suitable for use in shrinkage-compensating concrete and shall be designated as Type E-1. Expansive cement shall conform to the requirements as to chemical composition prescribed. Expansive cement shall conform to the physical requirements prescribed. The cement shall be sampled and the properties shall be determined with the following test methods: sampling, chemical analysis, time of setting, air content, restrained expansion of mortar, compressive strength, and density.
1.1 This specification covers hydraulic cements that expand during the early hardening period after setting.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
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 this 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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)2
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.