To promote the resource utilization of industrial solid wastes in prefabricated building wall panels, fly ash, slag, desulfurized gypsum and other solid wastes were used to partially replace cement for preparing foamed concrete. Single factor tests and orthogonal tests were adopted to investigate the effects of solid waste content, water binder ratio, foam dosage (target dry density), and curing regime on properties including dry density, compressive strength, thermal conductivity, water absorption and pore structure. Furthermore, mechanical, thermal insulation, sound insulation, fire resistance and durability performances of the material applied in prefabricated lightweight wall panels were analyzed. Planned experimental data indicate that the maximum 28 d compressive strength (3.4 MPa) is achieved at a total solid waste content of 40 %. The mix proportion with a water binder ratio of 0.50 and target dry density of 600 kg/m³ delivers a compressive strength of approximately 3.2 MPa at the thermal conductivity of 0.105 W/(m·K), satisfying the strength requirements for prefabricated lightweight walls. Dry density acts as the critical factor balancing thermal conductivity and mechanical strength. This preliminary analysis is developed based on planned data; actual values are pending verification by real experimental results.

Daqing Chen, Qiang Chen, Huadong Sun. Research on the Preparation of Foam Concrete Based on Solid Waste and Its Application Performance in Prefabricated Lightweight Walls. Academic Journal of Engineering and Technology Science (2026), Vol. 9, Issue 4: 63-69. https://doi.org/10.25236/AJETS.2026.090408.

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