Ultra-high performance concrete for spraying as well as preparation method and use method of ultra-high performance concrete: Fid-Bau Portal

Ultra-high performance concrete for spraying as well as preparation method and use method of ultra-high performance concrete

ZHAO SHANGCHUAN / LIU LONGLONG / WANG SHAOPENG / WANG ZHAOLONG

Abstract

The invention discloses ultrahigh-performance concrete for spraying as well as a preparation method and a use method of the ultrahigh-performance concrete, and relates to the technical field of concrete. According to the invention, water, Portland cement, rapid hardening sulphoaluminate cement, silica fume, fly ash, sand, a retarder, a water reducing agent, an antifoaming agent, a coagulation accelerator, basalt fiber and steel fiber are used as raw materials to prepare the ultra-high performance concrete for injection. The concrete provided by the invention has excellent characteristics of early strength, high strength, high fluidity and strong crack resistance, and can solve the problems of large shrinkage and easy cracking of ultra-high performance concrete after spray hardening.

本发明公开了一种喷射用超高性能混凝土及其制备方法和使用方法，涉及混凝土技术领域。本发明是利用水、硅酸盐水泥、快硬硫铝酸盐水泥、硅灰、粉煤灰、砂、缓凝剂、减水剂、消泡剂、促凝剂、玄武岩纤维、钢纤维为原料制成喷射用超高性能混凝土。本发明的混凝土具有早强、高强、高流动性、抗裂能力强的优良特性，能够解决超高性能混凝土经喷射硬化后收缩大、易开裂的问题。

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