The technical details and effect evaluation of the composite use of EPS cement sandwich panels and reinforced concrete mainly involve the following aspects:
1. Technical Details:
- The reinforced truss EPS concrete composite sandwich panel structure uses a reinforced truss formed by welding the upper and lower load-bearing steel bars and web steel bars as the load-bearing frame. It is filled with EPS concrete, concrete is poured on both sides, and is prefabricated directly in the factory.
- By taking a series of technical measures to improve and optimize the floor slab reinforcement, installation and fixation of EPS polystyrene composite lightweight filling blocks, and anti-floating reinforcement, the construction technology of poured reinforced concrete hollow floor slabs was summarized.
- Triethanolamine modifier and water-based epoxy resin are used to perform surface modification treatment on expanded polystyrene (EPS) particles to effectively improve the bonding degree between the EPS particles and the cementitious material interface.
2. Effect Evaluation:
- The reinforced truss EPS concrete composite sandwich panel has the properties of light weight, high strength, thermal insulation, and convenient construction. Through experimental research on three components, the characteristic loads such as stress characteristics, cracking load and ultimate load under the action of vertical load were obtained.
- As a kind of organic and inorganic composite lightweight aggregate concrete, EPS concrete has a smaller density, better thermal insulation performance and sound insulation performance than ordinary concrete. It can significantly reduce building energy consumption and reduce the weight of the structure.
- The new EPS module cast wall shows good load-bearing capacity. The ultimate load-bearing capacity of the axial compression specimen is 3389.4kN. Moreover, as the eccentricity of the wall gradually increases, its ultimate load-bearing capacity decreases.
The technical details of the composite use of EPS cement sandwich panels and reinforced concrete mainly include the design of steel trusses, surface modification of EPS particles and optimization of construction technology. Effect evaluation shows that this composite material not only has the characteristics of light weight, high strength, and thermal insulation, but also performs well in improving the energy efficiency of buildings and reducing the weight of the structure. In addition, through experimental research and theoretical analysis, its mechanical performance under vertical load was verified, providing a reliable reference for practical applications.