Research on the Performance of Recycled-Straw Insulating Concrete and Optimization Design of Matching Ratio

Construction solid waste and agricultural waste, as renewable resources, have gained increasing attention recently. This research aims to explore the mechanical thermal properties of recycled-straw insulating concrete commonly made with construction straw in northern Fujian, which can provide useful suggestions for practical use concrete. The effects recycled coarse aggregate, fly ash, on were investigated by orthogonal tests. results tests optimized total efficacy coefficient method obtain optimal mix ratio Combined finite element analysis software ANSYS Workbench, heat transfer performance walls was analyzed simulate insulation walls. compressive strength found be 30.93 MPa, conductivity 0.5051 W/(m·K). steady-state wall plain carried out software, simulation showed that improved 145% compared wall. These indicate has better applied building envelopes save heating costs winter reduce carbon dioxide emissions, significant economic environmental significance areas low outdoor temperatures long periods.