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废弃陶瓷经破碎、筛分加工成人工骨料,部分或全部取代天然砂、石配制成废弃陶瓷骨料混凝土。共设计13组混凝土,其中,基准混凝土1组,废弃陶瓷骨料取代天然粗骨料、取代天然细骨料及同时取代天然粗、细骨料的各4组,取代量分别为30%,50%,70%,100%。进行混凝土收缩试验。试验结果表明,废弃陶瓷骨料混凝土与基准混凝土的收缩变形规律基本一致;废弃陶瓷骨料混凝土的收缩性能优于普通混凝土收缩性能,或者与普通混凝土收缩性能相当;随着废弃陶瓷骨料对天然骨料取代量的增加,混凝土的收缩率呈下降趋势;就收缩性能而言,在混凝土中,废弃陶瓷骨料部分或全部取代天然骨料是可行的。
Abandoned ceramic crushing, screening into artificial aggregate, partially or completely replace the natural sand, stone preparation of waste ceramic aggregate concrete. A total of 13 sets of concrete were designed, in which 1 set of reference concrete, 1 set of reference concrete, waste ceramic aggregate instead of natural coarse aggregate, natural fine aggregate instead of the natural coarse aggregate and fine aggregate of 4 groups, the substitution amount was 30%, 50 %, 70%, 100%. Conduct concrete shrinkage test. The experimental results show that the shrinkage deformation law of the waste ceramic aggregate concrete is basically the same as that of the benchmark concrete. The shrinkage properties of the waste ceramic aggregate concrete are better than the shrinkage properties of ordinary concrete or the shrinkage properties of ordinary concrete. In the case of shrinkage properties, it is feasible to replace some or all of the natural aggregates with ceramic aggregates in the concrete.