高强混凝土的配制及增韧研究

Study on preparation and toughening of high strength concrete

利用高性能骨料、水泥、硅灰以及钢纤维和聚丙烯纤维两种增韧材料配制标准立方体抗压强度100 MPa的高强高韧性混凝土,通过静力受压弹性模量实验绘制对应的应力—应变曲线图的分析发现这两种增韧材料对混凝土韧性的提高显著,同时钢纤维对混凝土基体抗压强度的提升明显而聚丙烯纤维对其提升不显著。

In the paper, the high strength （100 MPa） and high toughness concrete was prepared with high quality aggregates, cement silica fume, steel fiber and polypropylene fiber. According to the stress-strain curve from the static bearing elasticity modulus experiment, discovering these two kinds of plasticizing materials are remarkable to the toughness enhancement of the concrete. Simultaneously, the increasing concrete compressive strength of the steel fiber is significant while the polypropylene fiber has little effect.