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以抗硫酸盐水泥为胶凝材料,珊瑚礁和珊瑚砂为集料,人工海水为拌合水,配制出LC40珊瑚混凝土。正交设计试验结果表明:水泥用量及珊瑚礁用量对抗压强度影响显著,砂率对坍落度影响最大。珊瑚混凝土强度早期发展迅速,后期增长缓慢,轴压比和静弹性模量低于一般轻集料混凝土,具有相对良好的抗拉性能;配合比适当的珊瑚混凝土破坏形态既有纵向劈裂特点亦有轻微斜面剪切破坏特点,破坏时具有一定延性。
Using anti-sulfate cement as binder, coral reef and coral sand as aggregate and artificial seawater as mixing water, LC40 coral concrete was prepared. Orthogonal design test results show that: the amount of cement and coral reef dosage has a significant impact on compressive strength, sand rate has the greatest impact on slump. The strength of coral concrete rapidly developed in the early stage and then increased slowly in the late stage. The axial compression ratio and static modulus of elasticity were lower than those of ordinary light aggregate concrete, and had relatively good tensile properties. The collapsed concrete with suitable proportion had the characteristics of longitudinal splitting Slightly inclined shear damage characteristics, destruction has a certain ductility.