1.1 本试验方法包括通过测量干水泥的溶解热和部分水化7天和28天的水泥单独部分的溶解热来测定水硬性水泥的水化热，这些值之间的差值为各自水化期的水化热。 1.2 如果水硬性水泥的某些成分不溶于硝酸/氢氟酸溶液，则本试验方法的结果可能不准确。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 国际单位制数值应通过国际单位制测量或适当转换获得，使用标准中给出的转换和舍入规则 IEEE/ASTM SI 10 ，或以其他单位进行测量。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定适用性或监管限制。 警告- 新鲜的水硬性胶结混合物具有腐蚀性，长时间接触可能会导致皮肤和组织化学烧伤。 2. ====意义和用途====== 3.1 本试验的目的是确定受试水硬性水泥是否符合适用水硬性水泥规范的水化热要求。 3.2 当需要确定水硬性水泥在任何年龄段的水化热时，该试验也可用于研究目的。 注1: 当出于研究目的进行测试时，可以通过测定细度、化学成分和化合物成分获得有用的额外信息。 3.3 水硬性水泥水化热的测定提供了有助于计算大体积混凝土温升的信息。

1.1 This test method covers the determination of the heat of hydration of a hydraulic cement by measuring the heat of solution of the dry cement and the heat of solution of a separate portion of the cement that has been partially hydrated for 7 and for 28 days, the difference between these values being the heat of hydration for the respective hydrating period. 1.2 The results of this test method may be inaccurate if some of the components of the hydraulic cement are insoluble in the nitric acid/hydrofluoric acid solution. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and Rounding given in Standard IEEE/ASTM SI 10 , or measurements made in other units. 1.5 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 and health practices and determine the applicability or 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 ====== Significance And Use ====== 3.1 The purpose of this test is to determine if the hydraulic cement under test meets the heat of hydration requirement of the applicable hydraulic cement specification. 3.2 This test may also be used for research purposes when it is desired to determine the heat of hydration of hydraulic cement at any age. Note 1: When tests are performed for research purposes, useful additional information can be obtained by determining fineness, chemical and compound compositions. 3.3 Determination of the heat of hydration of hydraulic cements provides information that is helpful for calculating temperature rise in mass concrete.