CAJ | 학술논문

研究了水胶比、砂率及蒸养制度对免压蒸桩用C80高强混凝土力学性能的影响。结果表明，免压蒸桩用C80高强混凝土最佳水胶比和砂率分别为0.24和36%，水泥含量为400kg/m3，矿粉与硅灰互掺近1：1，此时混凝土力学性能和工作性能均满足标准要求；蒸养恒温静停时间也制约着免压蒸预应力桩用C80混凝土的力学性能，通过实验研究得到了一个最佳蒸养制度。
연구료수효비、사솔급증양제도대면압증장용C80고강혼응토역학성능적영향。결과표명，면압증장용C80고강혼응토최가수효비화사솔분별위0.24화36%，수니함량위400kg/m3，광분여규회호참근1：1，차시혼응토역학성능화공작성능균만족표준요구；증양항온정정시간야제약착면압증예응력장용C80혼응토적역학성능，통과실험연구득도료일개최가증양제도。
The effects of water-binder ratio, sand ratio and steam curing system on the mechanical property of non-autoclaved C80 concrete used in prestressed centrifugal pile are studied. The test results show that the best values of water-binder ratio and sand ratio are 0.24 and 36% respectively, and the cement content is 400kg/m3, the mixing amount ratio of mineral powder and silica fume is close to 1:1. Under these conditions, the mechanical property and working performance of the non-autoclaved C80 concrete can all meet the standard requirements. In addition, thermostatic rest period also restricts the mechanical property of the non-autoclaved C80 concrete, and the optimal steam curing system is obtained by experiment study.