ASTM C1608-2012 水凝水泥浆化学收缩的标准试验方法

标准号：ASTM C1608-2012
中文标准名称：水凝水泥浆化学收缩的标准试验方法
英文标准名称：Standard Test Method for Chemical Shrinkage of Hydraulic Cement Paste
标准类型：Q11
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：Q11
国际标准分类号：91.100.10 (Cement. Gypsum. Lime. Mortar)
适用范围：4. Significance and UseNumerous properties of cementitious materials are controlled by their initial hydration rate. Examples include early-age strength development, heat release, and crack resistance. One direct and convenient measure of this initial hydration rate is provided by the measurement of the chemical shrinkage of the cement paste during its hydration. As cement hydrates, the hydration products occupy less volume than the initial reacting materials (cement and water). Due to this volume change, a hydrating cement paste will sorb water from its immediate surroundings, when available. At early times, this sorption is in direct proportion to the amount of hydration that has occurred.