According to the needs of a high resistance protection facility,cement-based semi-light weight and high strength composite is developed,and the relationship between the composition,curing and microstructure of the composite material was stud-ied by using XRD,SEM and other means.Results show that with the increase of fly ash content in the cementitious material,the mechanical properties of the composite material are effectively improved.For composite material with active admixtures,steam curing can significantly improve material strength.The addition of steel fiber has played a good role in blocking crack,improved the com-pressive performance and brittleness of high strength composites,and changed the shape of failure.The flexural members of the composite material give full play to the mechanical performance advantages of steel and high strength cement base materials,and achieve a good combination effect.While reducing weight,bearing capacity of the flexural members exceeds the design load by more than 19％.
关键词
水泥基次轻高强复合材料/微观结构/抗压强度/应力应变曲线/受弯构件
Key words
cement-based semi-light weight and high strength composite/microstructure/compressive strength/stress and strain curve/flexural member
维普
万方数据