1.1本规范涵盖适用于混凝土表面的液膜形成化合物，以减少早期硬化期间的水分损失。白色成膜化合物的另一个作用是减少暴露在太阳辐射下的混凝土的温升。本规范涵盖的成膜化合物适合用作新浇混凝土的养护介质，也可用于拆除模板后或初始湿养护后的混凝土进一步养护。 注1:硅酸盐溶液在混凝土中具有化学反应性，而不是成膜；因此，它们不符合本规范的意图。 1.2以国际单位制表示的数值应视为标准。 括号中给出的值仅供参考。 1.3以下预防性警告仅适用于本规范第10节试验方法部分: 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。 1.4本标准的文本引用了提供解释材料的注释和脚注。这些注释和脚注不应视为本标准的要求。

1.1 This specification covers liquid membrane-forming compounds suitable for application to concrete surfaces to reduce the loss of water during the early-hardening period. White-pigmented membrane-forming compounds serve the additional purpose of reducing the temperature rise in concrete exposed to radiation from the sun. The membrane-forming compounds covered by this specification are suitable for use as curing media for fresh concrete, and may also be used for further curing of concrete after removal of forms or after initial moist curing. Note 1—Solutions of silicate salts are chemically reactive in concrete rather than membrane-forming; therefore, they do not meet the intent of this specification. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for informational purposes only. 1.3 The following precautionary caveat pertains only to the test methods portion, Section 10, of this specification: 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. 1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.