Construction method for precast outer wall waterproof structure of assembly type concrete building

Abstract

The invention relates to water resistance of assembly type buildings, in particular to a construction method for a precast outer wall waterproof structure of an assembly type concrete building. The construction method comprises waterproof structure construction conducted on vertical joints and transverse joints of precast concrete slabs and comprises the following operation that the joints are cleaned and dried; polyethylene foam round rod gaskets are crammed into the joints; the joints are filled with sealant in an environment of temperature of 18-30 DEG C and relative humidity of 59%-69%; the vertical joints are constructed first, and when construction is conducted to intersections of the vertical joints and the transverse joints, the transverse joints are constructed; and in construction of the transverse joints, a flexible blind hole polyethylene foam round rod gasket is crammed into the lowest gap in a high-low joint reverse ridge structure formed after butt joint of an upper precast concrete slab and a lower precast concrete slab. According to the construction method, few consumables are used, construction is environmentally friendly and free of pollution, the built waterproof structure does not need frequent maintenance later, a large number of maintenance materials are saved, and the condition of a large amount of building waste is also avoided.

Description

technical field [0001] The patent of the invention relates to the waterproofing of prefabricated buildings, in particular to a construction method for waterproofing structures of prefabricated exterior walls of prefabricated concrete buildings. Background technique [0002] Prefabricated buildings can save a lot of resources, be economical and environmentally friendly, and meet the characteristics of green buildings. They have also been paid more and more attention, and a relatively mature construction system for the main structure of prefabricated concrete buildings has gradually formed. However, to achieve the functional integrity of prefabricated concrete buildings, there is another important part - the waterproofing of the exterior walls of prefabricated concrete buildings. [0003] At present, in the main structure of prefabricated concrete buildings, the peripheral retaining wall usually adopts connection methods such as cast-in-place node connection and sleeve groutin...

AI Technical Summary

Problems solved by technology

[0003] At present, in the main structure of prefabricated concrete buildings, the peripheral retaining wall usually adopts connection methods such as cast-in-place node connection and sleeve grouting connection, in which the prefabricated slab and the cast-in-place node are horizontally continuous to form vertical joints, and the prefabricated slab is connected through sleeve grouting Form horizontal seams, such a large number of seams make it difficult to guarantee the waterproofing of building exterior walls

At the same time, the non-repairability of composite thermal insulation exterior wall panels also greatly increases the difficulty of leakage control of the exterior walls of prefabricated concrete buildings, which cannot meet the current economic, energy-saving and environmental requirements.

Images