Permanent column formwork made of high toughness cementitious composite and manufacturing method thereof

Abstract

The invention discloses a permanent column formwork made of a high toughness cementitious composite and a manufacturing method thereof. The permanent column formwork comprises reinforcing meshes and ahigh toughness cementitious composite layer which form a ring-column-shaped frame in an enclosing mode. The reinforcing meshes are embedded in the high toughness cementitious composite layer and formed in a poured mode, and extend in the circumferential direction of the hollow column formwork. The high toughness cementitious composite is prepared in the mode that after fine sand, cement, coal ashand silica fume are mixed through an additive, a fiber material is added. The cementitious composite column formwork made of a high toughness coagulation material is high in tensile resistance, bending resistance, shearing resistance and torsional resistance strength, the construction difficulty is lowered, the construction speed is increased, and the advantage that the construction period is obviously shortened is achieved; and after concrete pouring is finished, the formwork does not need to be removed, concrete is effectively restrained, the pressing resistance, shearing resistance, bending resistance and deformation resistance capacity and anti-seismic performance of a column are comprehensively improved, and the excellent durability is achieved.

Description

technical field [0001] The invention relates to the field of building construction tools, in particular to a high-toughness cement-based composite material permanent column formwork and a manufacturing method. Background technique [0002] Building formwork is a construction tool that is widely used in the construction of cement-based composite materials. The traditional formwork in our country is mainly made of wood formwork and bamboo wood formwork, which are processed on-site at the construction site and disassembled. Due to the low turnover times of wooden formwork and bamboo-wood formwork, the loss is serious, and my country's timber resources are relatively short. Therefore, the development of "substituting steel for wood" based on steel formwork and aluminum alloy formwork came into being. Steel formwork and aluminum alloy formwork greatly increased the turnover times of formwork and eased the demand for formwork during the rapid development of reinforced cement-base...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a permanent column formwork of high toughness cement-based composite material and its manufacturing method. The cement-based composite material layer made of high-toughness concrete material realizes tensile, Bending, shearing, torsional strength, and improve impact resistance and fatigue resistance. The permanent formwork can produce sufficient binding force on the internal core concrete. According to the design situation, it is not necessary to configure additional stirrups, which greatly simplifies the construction difficulty and improves the construction efficiency. The construction speed has the advantage of significantly shortening the construction period, and avoids the disadvantages of other formwork opening and poor construction quality

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