沙漠砂取代率及黏土掺量对砂浆性能影响研究

在沙漠内修建筑工程，所用砂料需要外运且费用较高，为此，开展了试验研究。选用金沙滩沙漠砂部分地取代中砂来配置砂浆进行施工。通过试验，研究了沙漠砂取代率和黏土掺量对砂浆抗压强度、稠度的影响。结果表明，随着沙漠砂取代率的增大，砂浆抗压强度呈先升高后下降的趋势，当取代率为20%时达到峰值；而当沙漠砂、黏土取代率继续增大时，砂浆稠度分别呈下降和上升趋势。研究成果对于科学利用沙漠砂、指导掺和料对砂浆的改性，具有一定的指导意义。

Influence of desert sand replacing rate and clay mixing amount on mortar performance

The sand material in construction engineering in the desert area needs to be transported from the outside and the cost is high, so the partial replacement of medium sand is partly replaced by Jinshatan desert sand in mortar production was conducted. The effects of desert sand replacing rate and mixing amount of clay on the compression strength and consistence of the mortar are studied through experiments. The results show that with the increase of the desert sand replacing rate, the compressive strength of cement mortar increases first and then decreases; the peak compressive strength is achieved when the desert sand replacing rate is 20%. With the increase of the replacing rate of desert sand and clay, the consistence of mortar presents decrease and increase trend respectively.