A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steam-curing-free agent for precast concrete member and preparation method of steam-curing-free agent
The invention relates to a steam-curing-free agent for precast concrete members and a preparation method of the steam-curing-free agent, and belongs to the technical field of additives. The steam-curing-free agent for the precast concrete member is prepared from the following raw materials in percentage by mass: 50%-90% of an aluminum-containing active mineral material and 10%-50% of gypsum. The invention also discloses a preparation method of the steam-curing-free agent for the precast concrete member. According to the steam-curing-free agent for the precast concrete member, the hydration and hardening speed of concrete entering a mold can be greatly increased, so that the precast concrete can reach the demolding strength after being cured for 6-12 hours at normal temperature, and the curing time is equivalent to that of steam curing; in addition, the compactness of the concrete is improved, and the long-term strength and durability, especially the shrinkage performance, are remarkably improved.
本发明涉及一种用于预制混凝土构件的免蒸养剂及其制备方法，属于添加剂技术领域。所述用于预制混凝土构件的免蒸养剂，由如下质量百分数的原料制成：含铝活性矿物材料50％‑90％和石膏10％‑50％。本发明还公开了上述用于预制混凝土构件的免蒸养剂的制备方法。本发明的用于预制混凝土构件的免蒸养剂，不仅能够大幅度加速入模后混凝土的水化硬化速度，从而使得预制混凝土在常温养护6h‑12h即可达到脱模强度，与蒸养养护时间相当；而且增加了混凝土的密实性，后期强度和耐久性能尤其是收缩性能都有显著提升。
Steam-curing-free agent for precast concrete member and preparation method of steam-curing-free agent
The invention relates to a steam-curing-free agent for precast concrete members and a preparation method of the steam-curing-free agent, and belongs to the technical field of additives. The steam-curing-free agent for the precast concrete member is prepared from the following raw materials in percentage by mass: 50%-90% of an aluminum-containing active mineral material and 10%-50% of gypsum. The invention also discloses a preparation method of the steam-curing-free agent for the precast concrete member. According to the steam-curing-free agent for the precast concrete member, the hydration and hardening speed of concrete entering a mold can be greatly increased, so that the precast concrete can reach the demolding strength after being cured for 6-12 hours at normal temperature, and the curing time is equivalent to that of steam curing; in addition, the compactness of the concrete is improved, and the long-term strength and durability, especially the shrinkage performance, are remarkably improved.
本发明涉及一种用于预制混凝土构件的免蒸养剂及其制备方法，属于添加剂技术领域。所述用于预制混凝土构件的免蒸养剂，由如下质量百分数的原料制成：含铝活性矿物材料50％‑90％和石膏10％‑50％。本发明还公开了上述用于预制混凝土构件的免蒸养剂的制备方法。本发明的用于预制混凝土构件的免蒸养剂，不仅能够大幅度加速入模后混凝土的水化硬化速度，从而使得预制混凝土在常温养护6h‑12h即可达到脱模强度，与蒸养养护时间相当；而且增加了混凝土的密实性，后期强度和耐久性能尤其是收缩性能都有显著提升。
Steam-curing-free agent for precast concrete member and preparation method of steam-curing-free agent
一种用于预制混凝土构件的免蒸养剂及其制备方法
WANG ZHIYONG (author) / QI DONGYOU (author) / ZHANG YU (author) / HE CHANGYU (author) / NING JINGHUA (author) / XU DUJUN (author)
2022-06-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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