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Construction method of high-ductility fiber concrete floor cast-in-place layer

A fiber-reinforced concrete and construction method technology, applied in the processing of building materials, construction, building construction, etc., can solve the problems of limited improvement of structural integrity and seismic performance, self-heavy cast-in-place concrete surface, complex construction technology, etc. Achieve the effect of improving the integrity and anti-seismic performance, enhancing the bonding performance, and simplifying the process

Active Publication Date: 2015-02-18
西安五和新材料科技集团股份有限公司
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  • Description
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Problems solved by technology

The main problem of this method is that the cast-in-place concrete surface layer is heavy and has poor crack resistance. It needs to lay steel mesh, the construction process is complicated, and the improvement of structural integrity and seismic performance is limited. casualties and economic losses

Method used

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  • Construction method of high-ductility fiber concrete floor cast-in-place layer
  • Construction method of high-ductility fiber concrete floor cast-in-place layer

Examples

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Embodiment 1

[0022] Follow the technical scheme of the present invention, such as figure 1 and figure 2 As shown, in this example, the prefabricated floor 1 adopts a one-way circular hole plate, the plate span is 3m, the width is 600mm, and the thickness is 120mm. After the prefabricated floor 1 is hoisted in place, short steel bars 2 with a diameter of 12mm are implanted every 300mm at the joints of the prefabricated floor 1. The upper part of the prefabricated floor 1 after treatment is poured with 20 mm thick high ductility fiber concrete, and after curing for 3 days, the integral layer of high ductility fiber concrete floor is obtained.

[0023] The components of the above-mentioned high ductility fiber concrete are cement, fly ash, silica fume, sand, PVA fiber, water reducer and water, wherein, by mass percentage, cement: fly ash: silica fume: sand: water = 1: 0.9: 0.1: 0.76: 0.58; based on the total volume of cement, fly ash, silica fume, sand and water mixed uniformly, the volume...

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Abstract

The invention discloses a construction method of a high-ductility fiber concrete floor cast-in-place layer, and solves the problems of complicated construction process of the conventional prefabricated floor cast-in-place construction technology, and poor ductility and large dead load of the poured cast-in-place layer. The construction method comprises the following steps of: at first, embedding short reinforcing steel bars on a slab joint of the prefabricated floor slabs, and then pouring high-ductility fiber concrete on the surfaces of the prefabricated floor slabs. According to the invention, by utilizing the advantage of the mechanical property of the high-ductility fiber concrete, and good adhesive property between the high-ductility fiber concrete and a masonry structure, integrity, crack resistance and leakage resistance of a floor system and the masonry structure can be greatly improved, drop of the prefabricated floor system under the earthquake action can be avoided, and the anti-seismic property of the masonry structure is remarkably improved.

Description

technical field [0001] The invention relates to the construction technology of the integral pouring layer of the floor, in particular to a construction method of the integral pouring layer of the high ductility fiber concrete floor. Background technique [0002] The floor slab mainly bears the vertical load from the floor, and is an important horizontal load-bearing member in the building structure. Its overall performance has a great influence on the structural safety and seismic performance. At present, prefabricated floors are generally used in masonry structures in my country. In order to improve the integrity of the floor, after the prefabricated floor is hoisted in place, it is necessary to lay steel mesh on the surface of the floor, and then pour the concrete surface to form the floor as a whole. The main problem of this method is that the cast-in-place concrete surface layer is heavy and has poor crack resistance. It needs to lay steel mesh, the construction process ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/00C04B28/04C04B16/06
Inventor 邓明科梁兴文孙宏哲秦萌
Owner 西安五和新材料科技集团股份有限公司
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