【摘要】 细砂混凝土的试验研究表明:细砂在混凝土中的含砂率应为20%左右,同时降低水灰比,掺入10%左右的掺合料,即可获得与粗砂混凝土相当的强度等级。更多还原

【Abstract】 The test research show that the content sand rate should be as 20 % in concrete,at the same time,the ratio of water cement must be decreased,and mixing about 10 %mixed material can obtain fine concrete in good quantity corresponding to the strength class of general concrete.更多还原