一种大流动性超高强混凝土制造技术

本发明专利技术涉及一种大流动性超高强混凝土，由下述重量配比的材料制成：水泥２６０～３００公斤，水１１０～１２５公斤，砂６７０～７４０公斤，石１０６０～１１４０公斤，硅粉２０～４６公斤，矿粉１８０～２３０公斤，以水泥、矿粉、硅粉重量之和计加入萘磺酸盐、塑化增强剂及高效引气剂复合的３０％浓度的复合外加剂３．５％～５．０％，胶结料总用量≤５４０公斤／立方米，组份为塑化增强剂及高性能引气剂的化合物能在砼中引入无数５００μｍ以下，大量为０．１～１０μｍ的微细气泡，提高混凝土的流动性，而不降低混凝土的强度，同时提高萘磺酸盐的减水率，外加剂具有极高的减水率，能分散水泥等颗粒，提高混凝土的强度和流动性，在３２℃下３小时无坍落度损失，由于塑化增强剂的存在使得高强混凝土过于粘稠、结底、难以泵送的问题得到解决，混凝土耐久性得到提高。

Super high strength concrete with large fluidity

The invention relates to a high fluidity and super high strength concrete, prepared by the following materials: cement weight ratio 260 ~ 300 kg, 125 kg of water 110 ~ 670 ~ 740 kg, sand stone, 1060 ~ 1140 kg, 20 kg ~ 46 silica powder, 180 to 230 kilograms, with cement, slag, silica fume and weight and adding naphthalene sulfonate, plasticization reinforcing agent and air entraining agent, 30% concentration of composite compound admixture from 3.5% to 5%, the total amount of binder is less than or equal to 540 kg / m3, component of compound plasticization reinforcing agents and high performance of air entraining agent can introduce numerous 500 m in concrete in 0.1, a large number of ~ 10 m micro bubble, improve the fluidity of concrete, without reducing the strength of concrete, and improve Naphthalene sulfonate water reducing ratio, additive has high water reducing rate, can disperse cement particles, increase the compressive strength and fluidity, under the temperature of 32 DEG C for 3 hours without the slump loss due to plasticization reinforcing agent in the presence of high strength concrete is too thick, the knot is difficult to pump, solves the problem of the concrete. Durability is improved.

【技术实现步骤摘要】

【技术保护点】
一种大流动性超高强混凝土，它是由下述重量配比的原材料制成：水泥２６０～３００公斤，水１１０～１２５公斤，砂６７０～７４０公斤，石１０６０～１１４０公斤，其特征在于：加入硅粉２０～４６公斤，矿粉１８０～２３０公斤，以水泥、矿粉、硅粉重量之和计加入萘磺酸盐、塑化增强剂及高效引气剂复合的３０％浓度的复合外加剂３．５％～５．０％，胶结料总用量≤５４０公斤／立方米。

【技术特征摘要】

【专利技术属性】
技术研发人员：李丽娟，刘锋，陈峭卉，杨军，陈应钦，谢伟锋，陈智泽，
申请(专利权)人：广东工业大学，
类型：发明
国别省市：81[中国|广州]