Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-freezing machine-made sand ultra-high performance concrete water reducing agent and preparation method thereof
The invention provides an anti-freezing machine-made sand ultra-high performance concrete water reducing agent. The anti-freezing machine-made sand ultra-high performance concrete water reducing agent comprises 60-80 parts of a polycarboxylic acid water reducing agent and 20-32 parts of nano silicon dioxide modified lignin fibers, wherein the polycarboxylic acid water reducing agent is prepared from methyl allyl polyoxyethylene ether, deionized water, H2O2, a material A and a material B according to a weight part ratio of (200 to 240): (400 to 500): (6 to 8): (200 to 220): (280 to 320). According to the anti-freezing machine-made sand ultra-high performance concrete water reducing agent prepared by the preparation method disclosed by the invention, the water reducing rate is effectively improved, the consumption of cement is reduced, the cost is reduced, and the flowability of concrete is maintained within a certain time; the hydration reaction of the cement can be accelerated, so that the strength of the UHPC is enhanced; meanwhile, the polycarboxylic acid water reducer can also improve the microstructure of the concrete, so that the concrete is more compact and uniform, and the strength and durability of the concrete are further improved.
本发明提供一种防冻型机制砂超高性能混凝土减水剂，包括聚羧酸减水剂60‑80份和纳米二氧化硅改性木质素纤维20‑32份；其中，所述聚羧酸减水剂包括重量份比值为(200‑240)：(400‑500)：(6‑8)：(200‑220)：(280‑320)的甲基烯丙基聚氧乙烯醚、去离子水、H2O2、A料和B料。本发明制备得到的防冻型机制砂超高性能混凝土减水剂，有效提高减水率，有助于减少水泥的用量，降低成本，使得混凝土在一定的时间内维持流动性；还能够加速水泥的水化反应，从而增强UHPC的强度；同时，聚羧酸减水剂还能够改善混凝土的微观结构，使其更加致密和均匀，进一步提高混凝土的强度和耐久性。
Anti-freezing machine-made sand ultra-high performance concrete water reducing agent and preparation method thereof
The invention provides an anti-freezing machine-made sand ultra-high performance concrete water reducing agent. The anti-freezing machine-made sand ultra-high performance concrete water reducing agent comprises 60-80 parts of a polycarboxylic acid water reducing agent and 20-32 parts of nano silicon dioxide modified lignin fibers, wherein the polycarboxylic acid water reducing agent is prepared from methyl allyl polyoxyethylene ether, deionized water, H2O2, a material A and a material B according to a weight part ratio of (200 to 240): (400 to 500): (6 to 8): (200 to 220): (280 to 320). According to the anti-freezing machine-made sand ultra-high performance concrete water reducing agent prepared by the preparation method disclosed by the invention, the water reducing rate is effectively improved, the consumption of cement is reduced, the cost is reduced, and the flowability of concrete is maintained within a certain time; the hydration reaction of the cement can be accelerated, so that the strength of the UHPC is enhanced; meanwhile, the polycarboxylic acid water reducer can also improve the microstructure of the concrete, so that the concrete is more compact and uniform, and the strength and durability of the concrete are further improved.
本发明提供一种防冻型机制砂超高性能混凝土减水剂，包括聚羧酸减水剂60‑80份和纳米二氧化硅改性木质素纤维20‑32份；其中，所述聚羧酸减水剂包括重量份比值为(200‑240)：(400‑500)：(6‑8)：(200‑220)：(280‑320)的甲基烯丙基聚氧乙烯醚、去离子水、H2O2、A料和B料。本发明制备得到的防冻型机制砂超高性能混凝土减水剂，有效提高减水率，有助于减少水泥的用量，降低成本，使得混凝土在一定的时间内维持流动性；还能够加速水泥的水化反应，从而增强UHPC的强度；同时，聚羧酸减水剂还能够改善混凝土的微观结构，使其更加致密和均匀，进一步提高混凝土的强度和耐久性。
Anti-freezing machine-made sand ultra-high performance concrete water reducing agent and preparation method thereof
一种防冻型机制砂超高性能混凝土减水剂及其制备方法
TAN XIANJUN (Autor:in) / WANG ZHONGHAO (Autor:in) / CHEN WEIZHONG (Autor:in) / LIU YUBIAO (Autor:in) / ZHOU YUN (Autor:in) / YUAN JINGQIANG (Autor:in) / TIAN HONGMING (Autor:in)
05.11.2024
Patent
Elektronische Ressource
Chinesisch
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