Grouting material and perfusion of same into enclosed steel die for reinforcement of steel concrete beams and columns

Abstract

The invention provides a grouting material and perfusion of the same into an enclosed steel die for reinforcement of steel concrete beams and columns, and relates to grouting materials and perfusion of the same into steel dies for reinforcement of steel concrete beams and columns. The invention is aimed to overcome the problem that compact pouring of concrete is difficult to realize when original concrete beams and columns are reinforced by using the method of enlarging sections. The grouting material is prepared by mixing P.052.5 ordinary Portland cement, a UEA expanding agent, an FDN high efficiency water reducing agent and water. According to the invention, stirrups are arranged below an original steel concrete beam and are fixedly connected with the original steel concrete beam through first connecting steel bars, loaded steel bars are fixedly connected with a bearer of the original steel concrete beam through second connecting steel bars, a U-shaped channel steel die is fixedly sleeved on the steel bars and the original steel concrete beam; anchor bolts are fixedly connected with the original steel concrete column, the loaded steel bars are arranged at external sides of the original steel concrete column and are strapped by the stirrups, the loaded steel bars are in fixed connection with an upper bearer and a lower bearer of the original steel concrete column through the first and second connecting steel bars, steel templates are cladded over the stirrups, and the grouting material is perfused into an enclosed perfusion cavity. The invention is applicable to reinforcement of steel concrete beams and columns.

Description

technical field [0001] The invention relates to a grouting material and uses the grouting material to pour steel molds to reinforce reinforced concrete beams and columns, and belongs to the technical field of civil engineering reinforcement. Background technique [0002] At present, the method of enlarging the section is often used in the reinforcement of reinforced concrete beams and reinforced concrete columns. The method of enlarging the section is usually to install a wooden formwork or bamboo silk formwork after binding the steel skeleton around the original section, then pour concrete, and remove the formwork after the concrete is hardened. However, in actual engineering, it is often encountered that the required cross-sectional size of beams and columns is limited, the coarse aggregate in the concrete is difficult to enter the gap between the original member and the formwork, and the concrete is difficult to pour and compact and difficult to vibrate when pouring concr...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of grouting material and use the grouting material to fill the airtight steel formwork to strengthen the reinforced concrete beam and column, so as to solve the problem of coarse bone in the process of increasing the size of the concrete beam and concrete column with limited size by using the traditional enlarging cross-section method. It is difficult for the material to enter the gap between the original component and the formwork, the concrete is difficult to pour and compact, and it is difficult to vibrate, etc.

Images