Production method of building concrete bamboo formworks

Abstract

The invention discloses a production method of building concrete bamboo formworks. The production method comprises the following steps: 1, curtain manufacturing: weaving bamboo chips of which the thicknesses are smaller than or equal to 1.5 into bamboo curtains, and drying the bamboo curtains until the water content is smaller than or equal to 10%; 2, gum dipping: dipping the dried bamboo curtains with gum for 20 minutes, and secondarily drying the bamboo curtains until the water content is 12% after gum dipping; 3, plywood manufacturing: pre-pressing high-polymer plastics into plywood of which the thicknesses are smaller than or equal to 2 mm, and coating a single surface of each piece of plywood with gum for subsequent use; 4, blank assembling: spreading the high-polymer plastic bottom plate of which a gum surface faces upwards, laying the bamboo curtains layer by layer, and spreading the high-polymer plastic face plate of which a gum surface faces downwards; 5, hot pressing: feeding a plate blank into a hot press, and gluing and forming at high temperature under high pressure; and 6, edge trimming: carrying out edge trimming to obtain the final products. Gaps among the adjacent bamboo curtains are filled owing to hot melting of the upper high-polymer plastic plate and the lower high-polymer plastic plate. The invention aims to provide the production method of the building concrete bamboo formworks. Density and mechanical strength are uniform, a separation layer does not exist, the structure is firm, the shear strength is high, the surface is smooth so that water cannot permeate easily, and the service life is greatly prolonged.

Description

technical field [0001] The invention belongs to the field of bamboo board processing, in particular to a production method of bamboo formwork for building concrete. Background technique [0002] The existing plate has poor balance between strength, hardness, density and flatness, and has a low reuse rate. And the boards are mostly made of solid wood boards or wood core boards, which consume a lot of wood. Due to the use of a large amount of wooden boards, forest resources are even more scarce. The regeneration cycle of bamboo is relatively short, and its wood density and hydrophobicity are better than wood, so consider using bamboo boards instead of wood boards. [0003] In the existing industrial production, the internal bonding strength of the center of the particle board is relatively poor, which is a weak interface layer. According to the principle of mechanics, when the board is loaded, the center bears the largest shear force, so it is easier to break. [0004] And t...

AI Technical Summary

Problems solved by technology

[0003] In the existing industrial production, the internal bonding strength of the center of the particle board is poor, which is a weak interface layer. According to the principle of mechanics, when the board is loaded, the center bears the largest shear force, so it is easier to break

[0004] Moreover, the surface of the existing bamboo particleboard is prone to water seepage, and its structural strength will be greatly reduced after it enters the water, and its service life is shorter

[0005] Existing concrete formwork for construction usually uses wooden formwork or aluminum formwork, of which the service life of wooden formwork is relatively short, the stacked surface is not smooth, and it is not waterproof; aluminum formwork is used, and the structure is heavy and the cost is high