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Self-repairing type anti-shrinkage water reducing agent, preparation thereof and recycled aggregate concrete
The invention relates to a self-repairing type anti-shrinkage water reducing agent, a preparation method thereof and recycled aggregate concrete. The water reducing agent comprises the following raw material components in parts by weight: 150-250 parts of a water reducing agent; 10-50 parts of an air entraining agent; 20 to 100 parts of a retarder; 50 to 100 parts of alkaline powder; 40 to 120 parts of calcium lactate; 20-60 parts of rice hull ash; 50 to 100 parts of aerobic alkali-resistant bacillus thallus dry powder; 50 to 100 parts of an auxiliary agent; 20-80 parts of a dispersant; 150 to 200 parts of a solvent; and 400 to 600 parts of water. The anti-shrinkage reducing agent provided by the invention plays a role in optimizing the performance of recycled aggregate and reducing the influence of mud content and old mortar on the working performance of recycled concrete, so that the fluidity and the like of the concrete are improved; besides, the aerobic alkali-resistant bacillus takes rice hull ash as a bio-based carrier, so that a relatively good self-repairing effect can be realized, cracks and defects in recycled aggregate can be effectively filled, concrete on two sides of the cracks and glass fibers of the recycled fan blade are bridged, and the binding power of a crack area is remarkably enhanced; and the stress concentration problem caused by shrinkage stress is effectively relieved.
本发明涉及一种自修复型抗收缩减水剂及其制备、再生骨料混凝土，该减水剂包括以下重量份数的原料组分：减水剂150份～250份；引气剂10～50份；缓凝剂20～100份；碱性粉末50～100份；乳酸钙40～120份；稻壳灰20～60份；好氧型耐碱芽孢杆菌菌体干粉50～100份；助剂50～100份；分散剂20～80份；溶剂150～200份；水400～600份。本发明的抗收缩减水剂起到优化再生骨料性能的作用，减少含泥量和老砂浆对再生混凝土工作性能的影响，从而改善混凝土的流动性等；此外，好氧型耐碱芽孢杆菌以稻壳灰作为生物基载体，可以实现较好的自修复效果，能够有效填补再生骨料中的裂缝和缺陷，桥接裂缝两侧的混凝土和再生风机叶片玻璃纤维，显著增强裂缝区域的粘结力，有效缓解收缩应力引发的应力集中问题。
Self-repairing type anti-shrinkage water reducing agent, preparation thereof and recycled aggregate concrete
The invention relates to a self-repairing type anti-shrinkage water reducing agent, a preparation method thereof and recycled aggregate concrete. The water reducing agent comprises the following raw material components in parts by weight: 150-250 parts of a water reducing agent; 10-50 parts of an air entraining agent; 20 to 100 parts of a retarder; 50 to 100 parts of alkaline powder; 40 to 120 parts of calcium lactate; 20-60 parts of rice hull ash; 50 to 100 parts of aerobic alkali-resistant bacillus thallus dry powder; 50 to 100 parts of an auxiliary agent; 20-80 parts of a dispersant; 150 to 200 parts of a solvent; and 400 to 600 parts of water. The anti-shrinkage reducing agent provided by the invention plays a role in optimizing the performance of recycled aggregate and reducing the influence of mud content and old mortar on the working performance of recycled concrete, so that the fluidity and the like of the concrete are improved; besides, the aerobic alkali-resistant bacillus takes rice hull ash as a bio-based carrier, so that a relatively good self-repairing effect can be realized, cracks and defects in recycled aggregate can be effectively filled, concrete on two sides of the cracks and glass fibers of the recycled fan blade are bridged, and the binding power of a crack area is remarkably enhanced; and the stress concentration problem caused by shrinkage stress is effectively relieved.
本发明涉及一种自修复型抗收缩减水剂及其制备、再生骨料混凝土，该减水剂包括以下重量份数的原料组分：减水剂150份～250份；引气剂10～50份；缓凝剂20～100份；碱性粉末50～100份；乳酸钙40～120份；稻壳灰20～60份；好氧型耐碱芽孢杆菌菌体干粉50～100份；助剂50～100份；分散剂20～80份；溶剂150～200份；水400～600份。本发明的抗收缩减水剂起到优化再生骨料性能的作用，减少含泥量和老砂浆对再生混凝土工作性能的影响，从而改善混凝土的流动性等；此外，好氧型耐碱芽孢杆菌以稻壳灰作为生物基载体，可以实现较好的自修复效果，能够有效填补再生骨料中的裂缝和缺陷，桥接裂缝两侧的混凝土和再生风机叶片玻璃纤维，显著增强裂缝区域的粘结力，有效缓解收缩应力引发的应力集中问题。
Self-repairing type anti-shrinkage water reducing agent, preparation thereof and recycled aggregate concrete
一种自修复型抗收缩减水剂及其制备、再生骨料混凝土
DUAN ZHENHUA (author) / ZHANG WEI (author) / HOU MINJIE (author) / XIAO JIANZHUANG (author)
2024-07-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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