高性能防辐射混凝土性能试验研究

Experimental Study on the Performance of High-performance Radiation-pro of Concrete

文中对硼钙石粉末掺量、纤维掺量和纤维长径比对高性能防辐射混凝土流动度、抗压强度及抗折强度的影响展开研究。结果表明,随着硼钙石粉掺量的增大,高性能防辐射混凝土的流动度与硼钙石粉掺量为近似线性关系,抗压、抗折强度呈现先增大后减小的变化规律;随着纤维掺量的增大,高性能防辐射混凝土流动度呈现不断降低的变化规律,抗压、抗折强度呈现先增大后稳定的变化规律;随着纤维长径比的增大,高性能防辐射混凝土流动度呈现不断降低的变化规律,抗压、抗折强度呈现先缓慢降低后快速降低的变化规律;文中确定的最佳硼钙石粉掺量为2%,最佳纤维掺量为1.5%,最佳纤维长径比为20。

To explore the properties of radiation-proof concrete,The influences of borite powder content,fiber content and fiber length-diame-ter ratio on mobility,compressive strength and flexural strength of high performance radiation-proof concrete were studied in this paper.The results show that the fluidity of high performance radiation-proof concrete increases linearly with the addition of calcium borite powder,and the compressive and flexural strength increase first and then decrease with the addition of calcium borite powder.With the increase of fiber content,the fluidity of high performance radiation-resistant concrete decreases continuously,and the compressive and flexural strength increases first and then stabilizes.With the increase of fiber length-diameter ratio,the fluidity of high performance radiation-resistant concrete decreases continuously,and the compressive and flexural strength decreases slowly at first and then rapidly.The optimum content of borite powder and fi-ber is 2%,1.5%,and the optimum fiber length-diameter ratio is 20.