由于工程技术人员对机制砂混凝土缺乏足够认知,配制出的机制砂混凝土工作性差、可泵性差,出现离析泌水等问题,混凝土外观质量较差。基于云南普立至宣威高速沿线机制砂的应用情况,提出机制砂生产质量控制措施、机制砂混凝土不良状态调整措施及机制砂混凝土外观质量控制措施,以规范机制砂在高速公路混凝土工程中的应用,提升混凝土施工质量。 As engineering and technical personnel of the lack of sufficient understanding of the mechanism of sand concrete, formulated sand work poor performance of the concrete, pumpability is poor, there are problems such as the separation of bleeding, concrete appearance quality is poor. Based on the application of mechanism sand from Puri to Xuanwei Highway in Yunnan Province, this paper puts forward the control measures of production quality of mechanism sand, the adjustment measures of the imperfect state of the mechanism sand concrete and the appearance quality control measures of the mechanism sand concrete. In order to regulate the mechanism sand in the highway concrete project Application, improve the quality of concrete construction.