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微珠是从优质粉煤灰中筛选出来的一种超细的玻璃珠粉体材料,实践证明用微珠取代硅粉配制高工作性能的高强混凝土,可以有效的解决高强混凝土粘度大不利于超高、超远距离泵送的缺点。近两年来我们采用微珠、矿粉、粉煤灰三掺的技术配制C70、C80混凝土并大量用于实际工程结构中取得了良好的效果。
Beads are a kind of ultrafine glass bead powder material selected from high-quality fly ash. Practice has proved that using microspheres instead of silica fume to make high-performance concrete with high workability can effectively solve the problem that the viscosity of high-strength concrete is not good for super High, long distance pumping shortcomings. In the past two years we have used beads, slag, fly ash mixed with three technology to prepare C70, C80 concrete and used in a large number of actual engineering structures and achieved good results.