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History of building formwork
Keywords: History of building formwork
Wood stencils: Made from wood, usually poplar or pine. Advantages are relatively light weight, relatively cheap price, no module limit. The disadvantage is less turnover, processing loss, resource destruction, not fire prevention, the need for two plastering. Steel formwork: Made by pressing steel plate. Advantages are high strength, more turnover. The disadvantage is that the weight is too heavy, inconvenient to use, time-consuming, comprehensive cost is high. Plastic template: made of PE waste plastic and fly ash filler. The advantages are smooth surface, no moisture absorption, no mildew, acid and alkali resistance, not easy cracking; The disadvantage is that the strength and steel is small, the accessories are easy to damage, the thermal expansion coefficient is large, easy to deformation. In recent years, aluminum mold technology has been widely used in South Korea, the United States, Japan, Malaysia, Singapore and other countries, and has been gradually adopted in China, and the construction effect has been recognized by the market. |
