矿物掺合料对海工自密实高性能混凝土收缩性能的影响

Effect of Mineral Admixtures on Shrinkage Property of High Performance Self-compacting Concrete for Marine Structures

采用粉煤灰、矿渣粉、石灰石粉、硅灰等矿物掺合料,配制海工自密实高性能混凝土,对其收缩性能进行了研究。结果表明,掺入粉煤灰和石灰石粉可降低海工自密实高性能混凝土自收缩和干燥收缩,可配制出收缩较低的海工自密实高性能混凝土,提高其抗裂性。

By using fly ash, slag powder, limestone powder, and silica fume, high performance self-compacting concrete for marine structures is developed to study its shrinkage property. The results show that addition of fly ash and limestone powder can reduce the autogenous shrinkage and dry shrinkage of high performance self-compacting concrete for marine structures, thus producing lower shrinkage high-performance self-compacting concrete and improving its crack resistance.