睢宁县水利局利用加工石子筛余物细石屑,代替黄砂,修建农田水利建筑物,就地取材,节省投资,加快了配套速度。根据156个试块的对比试验,行200~#混凝土的抗压试验中,细石屑试块比黄砂试块高33.1 %,在80~#砂浆的抗压试验中,细石屑试块高53.5%;在抗拉试验中,细石屑试块高61%。细石屑容重为1.363吨/立米,比重为2.286;粒径0.15毫米以下石粉占7.8%。其强度偏高原因,主要是石粉在水泥硬化上起了有利作 Suining County Water Conservancy Bureau using the processing of stone residue sieve fine stone chips, instead of yellow sand, construction of farmland water conservancy buildings, local materials, save investment and speed up the matching speed. According to the comparison test of 156 test blocks, in the compressive test of 200 ~ # concrete, the fine stone chip is 33.1% higher than the yellow sand block, and in the compression test of 80 ~ # mortar, 53.5%; In the tensile test, the fine stone chip 61% higher. The fine gravel weight 1.363 tons / cubic meter, the proportion of 2.286; grain size 0.15 mm stone powder accounted for 7.8%. The reason for its high strength, mainly in the cement powder stone powder played a useful role