Expanding material for cast-in-situ hollow building roof component

Abstract

The invention relates to an expansion material for a cast-in-situ hollow floor member, which comprises 4 to 15 percent of sulphoaluminate cement or ferro-aluminate cement, 50 to 65 percent of Portland cement, 18 to 35 percent of fly ash, and 2 to 10 percent of modifying agent (weight percentage). The invention adopts the sulphoaluminate cement or the ferro-aluminate cement to be mixed with the Portland cement to ensure that the expansion material has good performances of light mass, high strength, corrosion resistance, thermal insulation and so on, and then is matched with other modifying agents to ensure that the expansion material can save the using amount of the cement and ensure that a floor system has the advantages of high strength, permeation resistance, freezing resistance, cracking resistance, friction resistance, ultraviolet irradiation resistance, tensile resistance, compression resistance, shock resistance, and good sound insulation effect when reducing the weight of the floor system.

Description

technical field [0001] The invention relates to a material for pouring floor components, in particular to an expansion material for cast-in-situ hollow floor components. Background technique [0002] At present, my country's construction industry is in the heyday of development. Since 1990, the construction area of ​​my country's annual construction and completion has increased year by year. In order to make my country's economy develop sustainably, steadily and healthily, and save resources, building energy-saving walls with concrete as the main material The most critical technical direction of products and roof enclosure materials is to achieve lightweight insulation. Conventional floor components are poured with concrete mortar, but the amount of concrete mortar is large and heavy, which increases the weight of the entire floor and is not conducive to pouring. At present, there are few materials for cast-in-place hollow floor components. The development of new high-perfor...

AI Technical Summary

Problems solved by technology

[0005] The applicant introduced the shape and material of a hollow floor member in its application number 200810115294.7, which reduces some problems of the self-weight of the floor itself. It uses concrete mortar to cast a hollow member, and then pours the hollow member on In the floor, because it is a hollow structure, the weight of the floor itself is greatly reduced. However, because the components themselves are made of concrete mortar and ordinary cement, the weight of the components themselves is still too large. In today's urban land shortage, space utilization is developing to high altitudes. , the building is getting taller and taller, so higher requirements are placed on the weight of the building materials themselves.