混凝土
混凝土
혼응토
CONCRETE
2014年
7期
80-84
,共5页
陈云龙%马菊荣%刘海峰%宋建夏
陳雲龍%馬菊榮%劉海峰%宋建夏
진운룡%마국영%류해봉%송건하
毛乌素沙地砂%粉煤灰%高强混凝土%正交试验
毛烏素沙地砂%粉煤灰%高彊混凝土%正交試驗
모오소사지사%분매회%고강혼응토%정교시험
Mu Us desert sand%fly ash%high-strength concrete%orthogonal experiment
通过正交试验，分析了水胶比、粉煤灰掺量、砂率、沙漠砂取代率对不同龄期高强混凝土抗压强度影响，并给出了配制高强混凝土的最优配合比。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；综合考虑各阶段的抗压强度，高强混凝土的最优配合比为水胶比0.24、粉煤灰掺量10%、砂率30%、沙漠砂取代率30%。
通過正交試驗，分析瞭水膠比、粉煤灰摻量、砂率、沙漠砂取代率對不同齡期高彊混凝土抗壓彊度影響，併給齣瞭配製高彊混凝土的最優配閤比。研究結果錶明：用沙漠砂替代中砂配製高彊混凝土是可行的；綜閤攷慮各階段的抗壓彊度，高彊混凝土的最優配閤比為水膠比0.24、粉煤灰摻量10%、砂率30%、沙漠砂取代率30%。
통과정교시험，분석료수효비、분매회참량、사솔、사막사취대솔대불동령기고강혼응토항압강도영향，병급출료배제고강혼응토적최우배합비。연구결과표명：용사막사체대중사배제고강혼응토시가행적；종합고필각계단적항압강도，고강혼응토적최우배합비위수효비0.24、분매회참량10%、사솔30%、사막사취대솔30%。
The orthogonal experiment was designed to analyze the influence of water-binder ratio,fly ash content,sand ratio and desert sand replacement ratio on the compressive strength of high strength concrete at the different age.The optimum mix ratio of desert sand high-strength concrete was also given out.Experimental result showed that it is practical to use the desert sand from Mu Us desert sand to mix high strength concrete,the optimum mix ratio of which was that water-binder ratio,fly ash dosage,sand ratio and desert sand replace-ment ratio were 0.24,10%,30% and 30%,respectively.
