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中文摘要：
通过正交试验，分析了沙漠砂替代率、粉煤灰掺量、砂率和水胶比对沙漠砂高强混凝土7、28d抗压强度和28d劈裂抗拉强度的影响；在正交试验基础上，通过单因素试验，进一步研究不同沙漠砂替代率对沙漠砂高强混凝土抗压强度的影响规律。研究结果表明：用沙漠砂替代中砂配制高强混凝土是可行的；综合考虑正交试验和单因素试验的研究成果，沙漠砂高强混凝土中沙漠砂的最佳替代率0-40％。
英文摘要：
The orthogonal experiment is carried out to analyze the influence of water-binder ratio, fly ash content, sand ratio and desert sand replacement ratio on the 7,28 d compressive strength and 28 d splitting tensile strength of desert sand high strength concrete.The opti- mum mix ratio of desert sand high strength concrete is also given out.On the basis of the optimal mixture ratio from orthogonal experi- ment, single factor experiment is carried out to study the influence of concrete compressive strength under different desert sand replace- ment ratio.Experimental result showed that it was practical to use the desert sand from Mu Us desert to mix desert sand high strength con- crete.The optimum desert sand replacement ratio of desert sand high strength concrete was from 0 to 40%.
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