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本文将石粉和机制砂按比例混合均匀,形成具有不同梯度石粉含量的机制砂。研究石粉含量对C20、C40、C60混凝土的工作性、强度和抗碳化性能的影响,结果表明:对C20混凝土,石粉含量在10%~15%时工作性和强度最佳;对C40混凝土,石粉含量在7%~10%时工作性和强度最佳;对C60混凝土,石粉含量在5%时工作性和强度最佳。
In this paper, the stone powder and sand are mixed in proportion to form a sand with different gradient of stone powder. The effect of stone powder content on the workability, strength and carbonization resistance of C20, C40 and C60 concrete was studied. The results show that the workability and strength of C20 concrete are best when the content of stone powder is 10% ~ 15% When the content is 7% ~ 10%, the workability and strength are the best. For C60 concrete, the workability and strength are best when the content of stone powder is 5%.