A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Phase change curing method for large-volume steam-curing-free ultra-high performance concrete
The invention relates to a phase-change curing method for large-volume steam-curing-free ultra-high performance concrete, which comprises the following steps: injecting a phase-change material which is molten into a liquid state into a phase-change material layer, so that the phase-change material uniformly covers the bottom and the periphery of the ultra-high performance concrete; and the phase change temperature of the phase change material layer is regulated to 60-80 DEG C, so that the ultra-high performance concrete is subjected to thermal maintenance. According to the invention, the maintenance form of the composite layer of the phase change material layer and the water storage surface layer is adopted, and the hydration heat release of the ultra-high performance concrete, the phase change heat storage effect of the phase change material and the synergistic temperature regulation of the water storage surface layer are utilized; the ultra-high performance concrete is subjected to long-time relative constant-temperature thermal curing, the cooling rate of the ultra-high performance concrete is reduced to 1-1.8 DEG C/day, the temperature difference between the interior and the exterior of the ultra-high performance concrete is effectively controlled, and the risk problems of shrinkage, cracking and the like of the ultra-high performance concrete caused by the temperature difference effect are greatly reduced.
本发明涉及一种大体积免蒸养超高性能混凝土的相变养护方法，该方法包括将融化为液态的相变材料注入至相变材料层，使所述相变材料均匀的覆盖在超高性能混凝土的底部和周围；通过调控相变材料层的相变温度至60‑80℃，以对所述超高性能混凝土进行热养护，本发明采用相变材料层、蓄水面层复合层的养护形式，利用超高性能混凝土自身水化放热和相变材料的相变储热效果以及蓄水面层的协同温度调控，对超高性能混凝土进行长时间的相对恒温热养护，将超高性能混凝土的降温速率降低至1‑1.8℃/天，有效的控制了超高性能混凝土内外的温差，极大的降低了温差效应带来超高性能混凝土收缩、开裂等风险问题。
Phase change curing method for large-volume steam-curing-free ultra-high performance concrete
The invention relates to a phase-change curing method for large-volume steam-curing-free ultra-high performance concrete, which comprises the following steps: injecting a phase-change material which is molten into a liquid state into a phase-change material layer, so that the phase-change material uniformly covers the bottom and the periphery of the ultra-high performance concrete; and the phase change temperature of the phase change material layer is regulated to 60-80 DEG C, so that the ultra-high performance concrete is subjected to thermal maintenance. According to the invention, the maintenance form of the composite layer of the phase change material layer and the water storage surface layer is adopted, and the hydration heat release of the ultra-high performance concrete, the phase change heat storage effect of the phase change material and the synergistic temperature regulation of the water storage surface layer are utilized; the ultra-high performance concrete is subjected to long-time relative constant-temperature thermal curing, the cooling rate of the ultra-high performance concrete is reduced to 1-1.8 DEG C/day, the temperature difference between the interior and the exterior of the ultra-high performance concrete is effectively controlled, and the risk problems of shrinkage, cracking and the like of the ultra-high performance concrete caused by the temperature difference effect are greatly reduced.
本发明涉及一种大体积免蒸养超高性能混凝土的相变养护方法，该方法包括将融化为液态的相变材料注入至相变材料层，使所述相变材料均匀的覆盖在超高性能混凝土的底部和周围；通过调控相变材料层的相变温度至60‑80℃，以对所述超高性能混凝土进行热养护，本发明采用相变材料层、蓄水面层复合层的养护形式，利用超高性能混凝土自身水化放热和相变材料的相变储热效果以及蓄水面层的协同温度调控，对超高性能混凝土进行长时间的相对恒温热养护，将超高性能混凝土的降温速率降低至1‑1.8℃/天，有效的控制了超高性能混凝土内外的温差，极大的降低了温差效应带来超高性能混凝土收缩、开裂等风险问题。
Phase change curing method for large-volume steam-curing-free ultra-high performance concrete
一种大体积免蒸养超高性能混凝土的相变养护方法
YANG WEN (author) / YU BAOYING (author) / LUO YAOLING (author) / GAO YUXIN (author) / LIU JIAWEN (author) / WU XIONG (author)
2024-04-05
Patent
Electronic Resource
Chinese
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