The eps sandwich panel uses ordinary portland cement, sand and fly ash or other industrial waste such as water slag, slag, etc. as fine aggregate, and then adds polystyrene particles and a small amount of inorganic chemical additives to cooperate with full automatic high efficiency A special mixing system for forced light aggregates, which introduces air during the mixing process to form a honeycomb-like stable pore in the core layer to further reduce the product bulk density, which not only reduces the material cost, but also achieves the ideal thermal insulation and sound insulation effects. Polystyrene particles and pores are evenly distributed inside the product, so that the concrete forms a circular honeycomb skeleton, which supports each other and increases the pressure resistance. The addition of fly ash not only improves the workability of the concrete slurry, but most importantly, it enhances the strength of the cement in the late stage, thereby enhancing the strength after the product is cured, the flexural strength is increased by 80%, and the modulus of rupture is increased by more than 50%.

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