Mechanical and Thermal Properties of RCB Masonry Containing Three Rows of Holes

Abstract

In order to promote and apply the structures of the recycled concrete block (RCB) masonry, the thermal and mechanical properties of the recycled concrete specimens were tested in this study. The RCB can meet load-bearing and seismic requirements and was prepared through experiments. Concurrently, the mechanical property experiment was conducted on the RCB masonry, and then its failure process and mode were discussed. In addition, a thermal property test was completed on the RCB wall, and the difference in the thermal properties of single-row hole, three-row hole, and solid blocks was analyzed by theoretical calculations. The results indicated that the mechanical properties of the RCB masonry were basically the same as those of the natural concrete block masonry, and they have good compressive stability. The calculation formulas of the compressive and shear strengths of the natural concrete block masonry are applicable to the RCB masonry. The RCB masonry containing three rows of holes owns more outstanding thermal property than natural concrete block masonry and satisfies the requirements for related codes.

Thermodynamic Analysis of Thermal Stability in Recycled Concrete Derived from Building Solid Waste

“…In past research, the thermal stability of recycled concrete was mostly estimated through empirical models or simplified physical models, which have achieved certain results in terms of practicality and accuracy [9][10][11][12][13]. However, due to the complex composition of building solid waste and the significant differences in the properties of waste from different sources, these models often fail to fully capture the impact of material multiphase nature on thermal stability [14][15][16].…”