LAUSR

Abstract As a kind of non degradable waste, solid waste ceramics has caused serious negative impact on land resources and ecological environment. Therefore, the reasonable recycling of solid waste ceramics is of great significance to the sustainable development of society. In this study, solid waste ceramic powder (CP) was taken as a supplementary cementing material to replace cement (Cement) partly in polyvinyl alcohol-engineered cementitious composites (PVA-ECC) materials. Twelve groups of PVA-ECC materials were designed, with a CP substitution rate of 10%, 15%, 20% (proportion in the mass of cementing materials) respectively. The uniaxial tensile properties and thin plate bending properties of PVA-ECC with different substitution rate solid waste CP were compared and analyzed. The theoretical calculation model of uniaxial tensile stress-strain is established. The results show that recycling of solid waste CP is helpful to clean production of PVA-ECC materials. PVA-ECC with solid waste CP shows good tensile strain and bending toughness. Therefore, CP was taken as a supplementary cement material is feasible. When the content of fly ash (FA) is 70%, the content of Cement is 10%, and the content of solid waste CP is 20%, the uniaxial tensile strain of the material is the largest, which is 4.94%; at the same time, the ultimate bending toughness index of the material is the largest, which is 352.21. Therefore, the mix proportion of this group of specimen is the optimal mix proportion. Compared with the uniaxial tensile test results, the accuracy of the model established in this study is verified. It can effectively predict the uniaxial tensile constitutive model of PVA-ECC material with any substitution rate when the substitution rate of solid waste CP is 10%–20%. This study can play a certain role in promoting the resource utilization of solid waste CP.