GB/T 12959-2008 in English

《GB/T 12959-2008水泥水化热测定方法》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。
本标准规定了水泥水化热测定方法的原理、仪器设备、试验室条件、材料、试验操作、结果的计算及处理等。

This standard has specified the theory of test methods for heat of hydration of cement, instrument and equipment, laboratory condition, materials, computation of results and treatment.
This standard is applicable to moderate-heat Portland cement, low-heat Portland cement, low-heat slag Portland cement, Portland cement, ordinary Portland cement, slag Portland cement, volcanic ash Portland cement, and Portland fly-ash cement. For other kinds of cement, when the heat of solution method is adopted, the time for measuring cement temperature shall be determined.
In this standard, the heat of solution method is treated as reference method, direct method is treated as substitutive method. When there is dispute over the mensuration result, it shall be subject to reference method.

Foreword
Test methods for heat of hydration of cement
1 Scope
2 Normative References
3 The Heat of Solution Method (reference method)
3.1 Methods and Principles
3.2 Material, Reagent and Formulation
3.3 Instrument and Equipment
3.4 Laboratory Conditions
3.5 Testing Sequence
4 Direct method (substitution method)
4.1 Methods and principles
4.2 Materials
4.3 Instrument and Equipment
4.4 Test Conditions
4.5 Testing Sequence