钢丝网增强混凝土中基体性能与增强效果的关系

为了提高钢丝网增强混凝土基复合材料的增强效果,通过断裂力学理论分析可知,改进基体材料和增强材料间的界面粘结性能,获得较大的界面粘结强度是提高增强效果的途径之一.选择了不同标号的混凝土基体材料,通过钢丝网增强后,开展了复合材料的抗压、抗弯和抗劈拉等常规静态力学性能试验,比较了复合材料中基体材料性能对增强效果的影响.结果显示,在相同的增强模式,随着混凝土标号的提高,基体材料和纤维间的界面粘接性能得到了改善,更有利于发挥钢丝的桥接作用,有利于充分利用钢丝网的力学性能,从而使得复合材料的抗压、抗弯和抗劈拉强度与基体材料相比, 最大提高率分别可达87.5%、88%和150%.

Influence of matrix properties in steel -wire -net reinforced concrete

To increase the reinforcing effect of fiber in the steel-wire-net reinforced concretes,through theoretical analysis of fracture mechanics,the approach to ameliorate the bond strength of interface between matrix and reinforcement was shown.The tests of such static mechanical characteristics as the compressive strength,bending strength and tensile strength of the reinforced concretes were carried out.The compressive strength,bending strength and tensile strength of the composite reinforced in the same mode we...