Construction method for external heat preservation of concrete wall

Abstract

The invention provides a concrete wall exterior heat preservation method which includes the following steps: A, prefabricating a bearing mesh plate: welding a deflected sandwich reinforced steel crosslinked mesh frame plate on a reinforced steel crosslinked mesh production line and transporting the welded deflected sandwich reinforced steel crosslinked mesh frame plate to the construction plant; B, assembling the bearing mesh plate: after the deflected sandwich reinforced steel crosslinked mesh frame plate is hoisted to the construction plant, colligating and connecting the anchoring bars, the girders and the reinforcing steel pillars, which are pre-left on the interior wall, with the anchor bars of the deflected sandwich reinforced steel crosslinked mesh network frame plate; C, directly spraying concrete with thickness of 3-10cm on one side of the deflected sandwich reinforced steel crosslinked mesh frame plate with flat griddings and intersected inclined wires as support to the framework; D, fixing the template at one side of the deflected sandwich reinforced steel crosslinked mesh frame plate through a flat reinforced steel mesh at the other side, and when the thickness of the concrete in step C reaches the desirable thickness, jetting concrete on one side of the template; E, after the surface of the wall is sprayed, jetting self-compacting concrete on the girders and the pillars. The method sprays concrete at the internal side and the external side of the exterior wall which needs heat preservation and bears weight step by step and can save large amount of templates and meanwhile shortens construction period, reduces project cost and effectively solves the problem that the exterior concrete protection layer outside the heat preservation layer cracks.

Description

technical field [0001] The invention relates to a construction method for external heat preservation of concrete walls, and belongs to the technical field of building structures and construction methods. Background technique [0002] During the construction of houses, a large amount of formwork support is required when pouring concrete load-bearing walls. In order to make reinforced concrete walls meet energy-saving requirements, people use reinforced grid sandwich panels as concrete sandwich insulation load-bearing walls. Its method is also the same as in the construction of ordinary concrete walls, supporting the formwork on both sides, relying on a large amount of wood, steel pipes on both sides and through the through bolts passing through the wall to fix the formwork, thus wasting a lot of wood, steel and labor, and one side ( or both sides) the steel wire grid sandwich panel with steel wire mesh is placed in the outer formwork of the wall, and then the concrete for the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a construction method for external insulation of concrete walls to solve the problem of cracks in the cement mortar protective layer

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