Light component for cast-in-situ hollow floor

Abstract

The invention relates to a building apparatus, in particular to a filling component used for a cast-in-situ hollow floor. The component is box-shaped and is formed by mixing expanding material and water in a mould to be directly expanded. The component comprises a bottom surface, a top surface, a frame body and a hollow channel, wherein, the bottom surface includes at least two arch preiections which are convex outwards, and an opening at the lower end of the hollow channel is positioned at the joint between an underside arch and an arch. The expanding material contains the components with the weight percentage: 4-15% of sulphate aluminium cement, 50-65% of portland cement, 18-35% of pulverized fuel ash and 2-10% of modifying agent, wherein, the modifying agent includes early strength admixture, water reducing agent, suspending agent, diffusant, expanding foam solution and foam stabilizer, and the mixed water and expanding material has the weight percentage of 45-72%. The technical proposal can ensure stableness of the structure of the cast-in-situ hollow floor, and improve the shock resistant and anti-cracking effects of the building. The component formed by solidifying the expanding material has lighter weight, more particularly, the light weight component formed by expanding and solidifying the expanding solution has better performances of heat preservation and sound insulation. The invention is in accordance with the principle of energy-saving and land-saving building promoted by China.

Description

technical field [0001] The invention relates to a construction equipment, in particular to a filling component for a cast-in-place hollow floor. Background technique [0002] The conventional long-span building structure system is realized by setting beams, increasing the thickness of the slab, and applying prestress. All of them have large foundation loads, poor shock resistance, and high costs. Requirements for long-span building structures. [0003] In the patent application No. 2008101152947, the applicant proposed a hollow body for cast-in-place hollow floors. A hollow body composed of seals is used. There are convex arcs on the upper and lower bottom surfaces of the hollow body. There is a through passage in the middle, which is cast with cement and concrete mortar, and lining cloth is laid in the interlayer to enhance the compressive strength of the hollow body wall. This scheme can make the existing floor light in weight, reasonable in structure and reliable in inte...

AI Technical Summary

Problems solved by technology

However, although the cement mortar used in the hollow body is much lighter than the previous components, it still has the disadvantage of a large proportion of cement mortar. This kind of hollow body has a thin wall, and the heat preservation and heat insulation effects are not good. At the same time, it can only be cast individually, and cannot be cast in batches. The manufacturing efficiency is not high, and the cost of materials needs to be further reduced

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