摘要
对高性能天然和再生骨料混凝土进行了基本力学性能试验,测得了其立方体抗压强度、棱柱体轴心抗压强度、抗拉强度、弹性模量。试验结果表明:高性能再生骨料混凝土的上述四个力学性能指标数值均小于天然的,而且抗拉强度和弹性模量降低幅度更大;随强度等级提高,棱柱体轴心抗压强度和抗拉强度与立方体抗压强度之比却是逐渐增大,其脆性也就越大。建立了高性能混凝土与高性能再生混凝土弹性模量与立方体抗压强度之间的公式。
The tests were performed about the basic mechanical behavior of plain natural （recycled） high-performance concrete （NHPC and RHPC）. The cubic and axial compressive strength, the tensile strength and elastic modulus were measured. The experimental results show that the four mechanical behavior indexes in the above mentioned for RHPC are evidently lower than that of HPNAC, especially the tensile strength and elastic modulus. With the concrete＇s strength enhanced, the ratios between the axial compressive strength,the tensile strength and the cubic compressive strength are increased gradually so that its brittleness is much larger. The formulas between elastic modulus and cubic compressive strength for plain NHPC and RHPC are proposed.
出处
《低温建筑技术》
2009年第10期16-18,共3页
Low Temperature Architecture Technology
关键词
高性能再生混凝土
混凝土强度指标
弹性模量
recycled high-performance concrete
strength indexes of concrete
elastic modulus
