贾福杰1,张加奇2,聂风义2,胡均雨2
水化热抑制型膨胀剂在工程中的应用
贾福杰1,张加奇2,聂风义2,胡均雨2
摘 要:随着胶凝材料体系的复杂化,混凝土早期放热量增加,混凝土结构体的冷缩量随之增加,地下室外墙因冷缩开裂的工程案例频频出现。HCSA-R水化热抑制型膨胀剂具有抑制水泥水化反应速率,推迟水化最高温峰的出现,同时降低水化最高温度的效果,在工程中使用能够起到控制冷缩开裂的效果。
Abstract: With the complication of cementitious materials system, the concrete hydration heat release at early ages is increased. At the same time, the cool shrinkage amount of concrete structure is also increased, so some cracks will frequently occur in the basement exterior wall due to cool shrinkage in real engineering. HCSA-R expansive agent can inhibit the reaction rate of cement hydration, delay the appear of the highest peak of hydration,and reduce the highest temperature of hydration. Therefore, the expansive agent can effectively control shrinkage cracking in construction.
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