CN104047427A

CN104047427A - Anti-seepage and thermal-insulation construction method for external wall and external window

Info

Publication number: CN104047427A
Application number: CN201410228391.2A
Authority: CN
Inventors: 欧阳帆; 陶善飞; 谭毅; 袁杰; 偰旭东
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2014-05-27
Filing date: 2014-05-27
Publication date: 2014-09-17

Abstract

The invention discloses an anti-seepage and thermal-insulation construction method for an external wall and an external window. Particularly, the method adopts the following technical scheme: Step 1, a structural framed girder and window buttresses are cast during construction of a main structure; when external window side templates are erected, the outer sides of the external window side templates are protruded so as to make rabbets of 30 mm and then the external window side templates are cast with concrete integrally; the rabbets of 30 mm can also be made by whitewashing during whitewashing; Step 2, when a window frame is mounted, the clearance between the window frame and an auxiliary layer is 15 mm; a lower sill is cast with pea gravel concrete to be flushed with the lower opening of the window frame in case of an external window with a slope, while the process is avoided in case of a right-angled external window; Step 3, mesh fabrics are attached to the periphery of the window and coated with cement-based waterproofing paint twice, the rabbets of the window are painted with waterproof mortar to be subjected to thermal insulation and cracking prevention treatment, and the periphery of the window frame is sealed with sealant. According to the method, the clearance between the window frame and a concrete base body is reduced so as to effectively prevent cracking, leakage and other common quality problems; a window body is sealed completely and has a good thermal insulation effect so as to reduce energy consumption; economic loss caused by later maintenance and leaking stoppage can be avoided.

Description

Exterior wall and exterior window anti-seepage heat preservation construction method

Technical field

The invention belongs to the on-the-spot exterior wall of building engineering construction and exterior window connection construction method, relate generally to the optimization method of job site exterior wall and the construction of exterior window anti-seepage heat preservation.

Background technology

At present, the on-the-spot body of wall of building engineering construction and window junction major part all adopt thermal insulation mortar to whitewash sealing, part engineering depth of plastering is large, there are two defects in these class methods: the first, thermal insulation mortar layer thickness is larger, especially exterior window side position is whitewashed after insulation layer, spacing between window frame and concrete substrate is larger, and multipass still produces crack after whitewashing and remedying; The second, the existence of front and back inter process constuction joint, makes limit outside window produce penetrating passage, causes the common quality defects such as window seepage.

Summary of the invention

Technical problem to be solved by this invention is to provide exterior wall and exterior window anti-seepage heat preservation construction method, can meet the globality of exterior wall, can carry out again waterproof thermal-insulated operation handing-over, last External Wall carries out, insulation layer protection, has also avoided construction in later period maintenance simultaneously, has saved construction cost.

For achieving the above object, exterior wall of the present invention and exterior window anti-seepage heat preservation construction method, its concrete technical scheme is:

The first step, in the time of main structure construction, has first built structural frames and has set a roof beam in place and window buttress, when vertical exterior window avris template, tongue and groove is done in outstanding outside increases 30mm, and monobloc cast concrete, also can be in the time whitewashing, powder goes out tongue and groove 30mm, and tongue and groove and insulation layer, with wide, flush with window frame outside;

Second step, when window frame is installed, window frame and extra play gap are 15mm.In window frame, add inner support, prevent that blowing agent expansion from causing window frame distortion, injection from inside to outside while dismissing infusion, stays 15mm wide outward, outside waterproofing mortar shutoff after blowing agent solidifies; Build for bank pea gravel concreten under the exterior window with slope, flush with window frame end opening, right angle exterior window does not need;

The 3rd step, sticks on grid cloth in reveal surrounding, brushing cement-base waterproof coating twice, and window tongue and groove place adopts waterproofing mortar to whitewash, and is incubated and cracking resistance processing, and window frame surrounding is played fluid sealant shutoff.

In described second step, waterproofing mortar and window frame seam crossing stay establishes the thick R type of 3mm groove, further ensures the seamless link of window and deck, improves waterproof thermal-insulated effect.

Exterior wall proposed by the invention and exterior window anti-seepage heat preservation construction method, reduced the gap between window frame and concrete substrate, and the constuction joint that staggers adds twice water-proof wire; Can effectively prevent the common quality defect such as crack and seepage; Forms sealing is complete, and high insulating effect is saved energy consumption; Can avoid the economic loss that the later stage repairs and leak stopping brings.

Brief description of the drawings

Fig. 1 is that structural frames is set a roof beam in place and window buttress structural representation.

Fig. 2 is the left view (with the exterior window on slope) of Fig. 1.

Fig. 3 is the left view (right angle exterior window) of Fig. 1.

Fig. 4 is A-A cross-sectional schematic in Fig. 1 (do not comprise structural frames set a roof beam in place, do not carry out waterproof thermal-insulated processing).

Fig. 5 is A-A cross-sectional schematic in Fig. 1 (do not comprise structural frames set a roof beam in place, carried out waterproof thermal-insulated processing).

Detailed description of the invention

Referring to accompanying drawing, exterior wall and exterior window anti-seepage heat preservation construction method, its concrete technical scheme is:

The first step, in the time of main structure construction, has first built structural frames and has set a roof beam in place 1 and window buttress 2, when vertical exterior window avris template, 30mm tongue and groove 3 is done in outstanding outside, and monobloc cast concrete, also can be in the time whitewashing, powder goes out 30mm tongue and groove, and tongue and groove and insulation layer, with wide, flush with window frame outside;

Second step, when window frame 5 is installed, window frame and window buttress gap are 15mm, in window frame, add inner support, prevent that 7 expansion of blowing agent layer from causing window frame distortion, (direction of arrow in figure) injection from inside to outside while dismissing infusion, stay 15mm wide outward, waterproofing mortar 8 shutoff for outside after blowing agent solidifies; For the exterior window with slope, between windowsill 4 and window frame 5, lower bank pea gravel concreten 6 is built, and flushes with window frame end opening, and right angle exterior window does not need;

The 3rd step, sticks on grid cloth 11 in reveal surrounding, adopts anticracking grout 12 to whitewash in grid cloth outside, brushing cement-base waterproof coating 9 twice, and window tongue and groove place adopts waterproofing mortar to whitewash, and window frame surrounding is played fluid sealant 10 shutoff.

Claims

1. exterior wall and exterior window anti-seepage heat preservation construction method, its concrete technical scheme is: the first step, in the time of main structure construction, first built structural frames and set a roof beam in place and window buttress, when vertical exterior window avris template, tongue and groove is done in outstanding outside increases 30mm, monobloc cast concrete, also can be in the time whitewashing, powder goes out tongue and groove 30mm, and tongue and groove and insulation layer, with wide, flush with window frame outside;

Second step, when window frame is installed, window frame and extra play gap are 15mm, add inner support in window frame, prevent that blowing agent expansion from causing window frame distortion, injection from inside to outside while dismissing infusion, stays 15mm wide outward, outside waterproofing mortar shutoff after blowing agent solidifies; Build for bank pea gravel concreten under the exterior window with slope, flush with window frame end opening, right angle exterior window does not need;

2. exterior wall according to claim 1 and exterior window anti-seepage heat preservation construction method, is characterized in that in described second step, and waterproofing mortar and window frame seam crossing stay establishes the thick R type of 3mm groove.