掺细化粉煤灰高强混凝土性能研究

对比研究了磨细灰与原状灰在高强混凝土中的作用 ,结果表明磨细粉煤灰的各种性能均好于原状粉煤灰 ,在适当配合比及高效减水剂的作用下 ,掺一定数量的磨细粉煤灰 ,可配制出抗压强度高于C60 的粉煤灰高强混凝土。掺入磨细粉煤灰和超塑化减水剂的高强混凝土可有效地避免离析和泌水现象。随着粉煤灰取代率的增大 ,坍落度逐渐增加 ,并最终达到极限值。

Research on the capability of the high-strength concrete mix with pulverulent coal-fired ash

The comparative studies on the effect of the pulverulent coal-fired ash and original coal-fired ash on the high-strength concrete, form a consolidate foundation for all studies on the properties studies. The results indicate that all properties of pulverulent coal-fired ash are obviously higher than that of original coal-fired ash. The concrete with the 28 days compressive strength of C60 can be produced by using suitably pulverulent coal-fired ash. The separating and excreting water of the concrete can be avoided efficiently when the pulverulent coal-fired ash and superplasticizer are used suitably,the higher the quantity ration of coal-fired ash and super plasticize are,the higher the caving degree of the concrete is.