废弃陶瓷骨料混凝土强度试验研究

Test and Research on Strength of Waste Ceramic Aggregate Concrete

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%。进行混凝土抗压强度及抗折强度试验。试验结果表明,废弃陶瓷骨料部分或全部取代天然骨料,混凝土强度均达到设计强度等级C30的要求;废弃陶瓷骨料对混凝土3d及28d抗压强度和抗折强度均无显著影响;就强度而言,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。

Waste ceramic blocks are processed into artificial aggregate which are used for preparing concrete, that is, waste ceramic aggregate concrete. There are 13 groups of concrete, such as 1 group of control concrete, 12 groups of waste ceramic aggregate concrete in which natural coarse aggregate, natural fine aggregate, and both natural coarse aggregate and fine aggregate are replaced by waste ceramic aggre- gate respectively. The percentages of replacement are 30 %, 50 %, 70 %, 100 %. Carried out concrete com- pressive strength and flexural strength tests, and some results are obtained. Firstly, strength grade of concrete can achieve C30, when waste ceramic aggregate replace natural aggregate partially or completely. Secondly, waste ceramic aggregate doesn＇t have significant influence on compressive strength and flexural strength of concrete at 3 d and 28 d. Finally, speaking of strength, it is feasible for waste ceramic aggre- gate to replace natural aggregate in concrete, partially or completely.