GB/T 12960-2019 in English
VALIDQuantitative determination of constituents of cement
- Issued on:2019-10-18
- Implemented on:2020-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$194.00
《GB/T 12960-2019水泥组分的定量测定》由TC184（全国水泥标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
Interpretation of GB/T 12960—2019 Standard for Quantitative Determination of Cement Components
| Component type | Main changes | Scope of application | Determination method |
|---|---|---|---|
| Pozzolanic mixed materials | New sulfide determination method, optimized selective dissolution conditions | Applicable to cement containing pozzolanic mixed materials | Method 1: Selective dissolution method; Method 2: Sulfide determination method |
| Fly ash | Modified the selective dissolution conditions of nitric acid solution | Applicable to cement containing fly ash | Method 1: EDTA solution selective dissolution method |
| Granulated blast furnace slag | Add sulfide determination method and optimize the insoluble slag treatment steps | Applicable to cement containing granulated blast furnace slag | Method 1: selective dissolution method; Method 2: sulfide determination method |
Implementation Suggestions
1. Laboratory conditions: Ensure that the laboratory temperature is controlled at $16^\circ C \sim 30^\circ C$, and be equipped with high-temperature furnace, acidity meter and other instruments and equipment.
2. Sample preparation:According to the GB/T12573 method, the sample is collected by quartering or reducing device to prepare a uniform sample. The residue is ground and passed through a $150~\mu\mathrm{m}$ square hole sieve.
3. Method selection:According to the cement type and component content, the appropriate method 1 or method 2 is selected, and method 1 shall prevail (in case of dispute).
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