Cast Molding Method for Cement Products
Date:2023-12-18 Views:414
The cast molding method is primarily used to produce lightweight composite wall panels. These panels consist of two surface layers made from fiber cement boards or calcium silicate boards, with a core material composed of lightweight aggregates—such as polystyrene particles, ceramsite, and fly ash—bonded together with cement. This design significantly reduces the weight of the wall panels while providing enhanced thermal insulation, heat resistance, and sound insulation performance.
The double-surface layers of the lightweight composite energy-saving wall panels are made from 100% asbestos-free fiber-reinforced calcium silicate boards or fiber cement boards (classified as Class A inorganic non-combustible materials), which effectively improve the fire resistance of the panels. For example, in the 120mm type panel, the combination of these materials results in a fire resistance rating of over 4 hours at 1100°C. Additionally, the wall panels do not emit harmful or toxic gases even under high-temperature conditions.
The greatest advantage of lightweight composite energy-saving wall panels is their dry and quick installation, clean construction environment, and civilized workflow, making them a truly new type of green building wall material.
For example, the surface density of a 120mm thick lightweight composite energy-saving wall panel is 90kg/m²—only one-fourth the weight of brick masonry, three-fourths that of aerated concrete, and about one-fifth the weight of a 120mm thick masonry wall with double-sided plastering. Additionally, the panel is 40mm thinner than a 160mm plastered wall, allowing for an increase in usable floor area of approximately 1m² for every 25m² of wall installed.
The main raw materials include silicate fireproof board or fiber cement flat panel, cellulose fiber, EPS polystyrene particles, lightweight ceramsite, early-strength Portland cement, polypropylene short fibers, composite resin rubber powder, and various additives.
