摘要
机制砂相比天然砂而言,其颗粒级配差并含有一定量的石粉,不但会影响拌合物质量,而且还会影响混凝土后期性能。通过研究粉煤灰和石粉含量对混凝土性能的影响,发现机制砂能改善混凝土和易性能、强度性能和干缩性能。经过在工程中的广泛应用,取得了良好的经济效益和社会效益。
Compared with the natural sand, the manufactured-sand, whose particle size is difference in distribution and has a certain amount of powder, not only affect the quality of the mixture, but also affect late performance of concrete, Effect of Fly ash and dust content on the properties of concrete is studied to improve the workability, strength, and drying shrinkage of the manufactured-sand concrete. Manufactured-sand has widely been applied for engineering and achieved good economic and social benefits.
出处
《粉煤灰》
2012年第5期38-40,共3页
Coal Ash China
关键词
机制砂
石粉
混凝土
manufactured-sand
micro-fines
concrete
