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Anti-cracking and tackifying reinforcing agent for tunnel filling lean concrete and preparation method of anti-cracking and tackifying reinforcing agent
The invention discloses an anti-cracking and tackifying reinforcing agent for tunnel filling lean concrete and a preparation method, and aims to solve the problems that the early strength is increased slowly, the later strength is reduced, and the construction progress and durability are affected due to the fact that a thickening material and a salt early strength agent are doped in the existing tunnel inverted arch filling concrete. The water reducer comprises a component A and a component B which are independently packaged, the component A comprises an organic high-molecular polymer PVA, silica fume and a nonionic surfactant, and the component B comprises a polycarboxylate superplasticizer, a hydroxyl surfactant and a dispersing aid; the component A and the component B are adopted to replace a conventional water retention and thickening method, so that the water retention and thickening agent has the advantages of improvement of poor concrete workability, enhancement, water resistance, cracking resistance, freezing resistance, erosion resistance, no toxicity, no odor, convenience in construction and the like, the mechanical strength and durability of concrete are improved, the workability and quality of a concrete mixture are stable, and the water retention and thickening agent is low in production cost, green, low in carbon and suitable for industrial production. The tunnel structure is safe and stable, and the service life is prolonged.
本申请公开了隧道填充贫混凝土用防裂增黏增强剂以及制备方法，以解决现有隧道仰拱填充混凝土中掺加增稠材料和盐类早强剂易导致其早期强度增长缓慢、后期强度下降，影响施工进度和耐久性的问题。本申请包括独立包装的A组分和B组分，A组分包括有机高分子聚合物PVA、硅灰和非离子型表面活性剂，B组分包括聚羧酸减水剂、羟基表面活性剂和分散助剂；本申请通过采用A组分和B组分替代了常规保水增稠的方法，具有改善贫混凝土和易性、增强、防水、防裂、防冻、抗侵蚀、无毒无味、施工方便等优点，提高了混凝土力学强度与耐久性能，混凝土拌合物工作性和质量稳定，且生产成本低，绿色低碳，隧道结构安全稳定，使用寿命延长。
Anti-cracking and tackifying reinforcing agent for tunnel filling lean concrete and preparation method of anti-cracking and tackifying reinforcing agent
The invention discloses an anti-cracking and tackifying reinforcing agent for tunnel filling lean concrete and a preparation method, and aims to solve the problems that the early strength is increased slowly, the later strength is reduced, and the construction progress and durability are affected due to the fact that a thickening material and a salt early strength agent are doped in the existing tunnel inverted arch filling concrete. The water reducer comprises a component A and a component B which are independently packaged, the component A comprises an organic high-molecular polymer PVA, silica fume and a nonionic surfactant, and the component B comprises a polycarboxylate superplasticizer, a hydroxyl surfactant and a dispersing aid; the component A and the component B are adopted to replace a conventional water retention and thickening method, so that the water retention and thickening agent has the advantages of improvement of poor concrete workability, enhancement, water resistance, cracking resistance, freezing resistance, erosion resistance, no toxicity, no odor, convenience in construction and the like, the mechanical strength and durability of concrete are improved, the workability and quality of a concrete mixture are stable, and the water retention and thickening agent is low in production cost, green, low in carbon and suitable for industrial production. The tunnel structure is safe and stable, and the service life is prolonged.
本申请公开了隧道填充贫混凝土用防裂增黏增强剂以及制备方法，以解决现有隧道仰拱填充混凝土中掺加增稠材料和盐类早强剂易导致其早期强度增长缓慢、后期强度下降，影响施工进度和耐久性的问题。本申请包括独立包装的A组分和B组分，A组分包括有机高分子聚合物PVA、硅灰和非离子型表面活性剂，B组分包括聚羧酸减水剂、羟基表面活性剂和分散助剂；本申请通过采用A组分和B组分替代了常规保水增稠的方法，具有改善贫混凝土和易性、增强、防水、防裂、防冻、抗侵蚀、无毒无味、施工方便等优点，提高了混凝土力学强度与耐久性能，混凝土拌合物工作性和质量稳定，且生产成本低，绿色低碳，隧道结构安全稳定，使用寿命延长。
Anti-cracking and tackifying reinforcing agent for tunnel filling lean concrete and preparation method of anti-cracking and tackifying reinforcing agent
隧道填充贫混凝土用防裂增黏增强剂以及制备方法
LIU SONGBAI (author) / LIU SHUHUA (author) / CAI HONG (author) / LI LIJUN (author) / YANG CHUN (author) / ZHU LIN (author) / LU JIABI (author) / ZHANG JIE (author)
2024-01-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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