1.1本试验方法包括测定膨胀水泥砂浆的长度变化，当受到约束时，由于水泥水化产生的内力的发展。 1.2以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 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，并确定监管限制的适用性。 ( 警告 -新鲜的水硬性水泥混合物具有腐蚀性，长时间接触可能会导致皮肤和组织灼伤。 2. )

1.1 This test method covers the determination of length changes of expansive cement mortar, while under restraint, due to the development of internal forces resulting from hydration of the cement. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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 of regulatory limitations prior to use. ( Warning —Fresh hydraulic cement mixtures are caustic and may cause burns to skin and tissue upon prolonged exposure. 2 )