EXPERIMENTAL STUDY ON MIX DESIGN AND EARLY STRENGTH OF RECYCLED AGGREGATE CONCRETE
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摘要: 对四川地区再生骨料的基本性质进行检测,采用自由水灰比方法进行再生混凝土配合比设计,讨论不同水灰比对抗压强度的影响,建议净水灰比取0.4。通过对90组再生混凝土不同龄期的抗压强度分析,回归不同取代率再生混凝土的强度换算公式,公式计算结果与试验结果符合良好,为该地区再生混凝土工程应用和结构早龄期强度推算提供强度指标。Abstract: Based on the test results of the basic performance of the recycled aggregate in Sichuan Province,the free water cement ratio method for mix design was adopted,and the value of W /C was suggested to be 0. 4. The experimental formula of conversion strength for different recycled aggregate replacement ratio was proved according to 90 sets of experimental data. The results by formula agreed well with those of the tests,which provided strength index for the use of recycled aggregate concrete and estimate of early strength of structure in this region.
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