Method for padding of split bolt hole of concrete shear wall

Abstract

The invention discloses a method for padding of a split bolt hole of a concrete shear wall. According to the method for padding of the split bolt hole of the concrete shear wall, a traditional uniform-section split bolt is replaced by a variable-section split bolt sleeve when a shear wall formwork is reinforced. The method for padding of the split bolt hole of the concrete shear wall comprises the following steps that the split bolt hole is formed in the concrete shear wall, a variable-section circular truncated cone rubber plug is placed and stuffed in the split bolt hole from the inner side of the concrete shear wall, a polyurethane foaming material which has the air hardening performance, resists seepage and preserves heat is injected into the split bolt hole, and an inner portion with the length of 15mm of the split bolt hole and an outer portion with the length of 15mm of the split bolt hole are reserved and padded with expanded mortar. According to the method for padding of the split bolt hole of the concrete shear wall, full-hole padding is guaranteed and padding is dense; the polyurethane foaming material which has the air hardening performance, resists seepage and preserves heat is used for padding, so that the padding quality is improved, and the seepage-proof and heat-preservation effect is good.

Description

technical field [0001] The invention is used in the construction industry, and in particular relates to a filling method for tension bolt holes in concrete shear walls. Background technique [0002] The tension bolt hole of the concrete shear wall is a hole that must be set when the concrete shear wall formwork is reinforced. For the filling of the tension bolt hole of the concrete shear wall, expansion expansion mortar is usually used for filling. The traditional split bolt holes cannot be filled at one time, and the filling needs to be filled in multiple times, not only on the inner side, but also on the outer side. When the outside is blocked, the outer frame needs to be used, and the construction is very inconvenient and unsafe. The traditional way of filling bolt holes is to fill one side and insert and tamp at the same time. For this filling method, due to the responsibility of the operator, it is likely to cause both ends to be filled and the middle to be empty. It c...

AI Technical Summary

Problems solved by technology

The traditional pull bolt holes cannot be filled at one time, and the filling needs to be filled in multiple times, not only on the inner side, but also on the outer side.

When the outside is blocked, the outer frame needs to be used, which is very inconvenient and unsafe for construction

The traditional way of filling bolt holes is to fill while inserting and pounding at the same time. For this filling method, due to the responsibility of the operator, it is likely to cause both ends to be filled and the middle to be empty. It cannot guarantee the filling of the entire hole, making the filling impossible. Dense, the filling effect is relatively low, and the filling effect is not ideal, which will eventually lead to leakage of the outer wall, poor insulation effect, and a cold bridge will be formed at this part

Images