CN110984497A - Construction process for preventing hollowing of wall surface - Google Patents

Abstract

The wall surface hollowing-proof construction process comprises the following steps: a. grinding the wall body of the inner wall; b. wall surface treatment; c. gluing the inner wall; d. scraping and smearing bonding mortar; e. napping operation; f. putty scraping; g. coating by scraping; h. performing leak-proof treatment; i. foaming agent blowing; j. cleaning a wall surface; k. smearing interface mortar; preparing thermal insulation mortar; m, sprinkling water; n, coating thermal insulation mortar; and o, maintaining, namely coating mortar on the surface of the aerated concrete block for napping operation, and judging the uniformity of the glue coated on the wall surface through fine sand in the glue coating process of the inner wall, so that the wall surface is prevented from hollowing, and the requirement of the building industry on protection is met.

Description

Construction process for preventing hollowing of wall surface

Technical Field

The invention relates to the field of building wall construction, in particular to a hollowing-proof construction process.

Background

201810974693.2 discloses a middle and middle wall surface construction process, which improves the adhesion between the heat preservation mortar and putty and the aerated concrete block surface by coating mortar on the aerated concrete block surface for roughening operation, thereby preventing the cracking problem of the putty and the heat preservation mortar, preventing the environment pollution caused by the heat preservation mortar powder and the putty powder falling after cracking, and meeting the requirement of the building industry for environmental protection.

The technicians of the company find that the uniform degree of the inner wall gluing is inconvenient to control in the construction process, so that the hollowing rate of the wall surface constructed by the construction method is more than four per thousand.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the construction process for preventing the hollowing of the wall surface, and the uniform degree of gluing can be observed by naked eyes by adding fine sand components in the glue for gluing the inner wall, so that the whole construction quality can be controlled, and the hollowing condition of the wall surface is greatly reduced.

In order to achieve the purpose, the invention provides the following technical scheme: the construction process for preventing hollowing of the wall surface comprises the following steps:

a. grinding the inner wall: grinding the wall body on the wall surface of the inner wall, wherein the grinding depth is 3-4 mm;

b. wall surface treatment: cleaning up dust and dirt on the inner wall surface and the outer wall surface;

c. gluing the inner wall: spraying a layer of glue on the surface of the inner wall, wherein the glue is uniformly sprayed in the spraying process, the ratio of the glue to water to fine sand is 7:1:1 during preparation of the glue used in spraying, and the mold fineness of the fine sand is less than 0.3;

d. scraping and plastering adhesive mortar: uniformly stirring 10 parts of gypsum powder, 10 parts of cement, 20 parts of medium sand and 13 parts of glue according to the parts by weight, adding water to prepare bonding mortar, scraping the bonding mortar on the surface of an inner wall, wherein the scraping thickness of the bonding mortar is controlled to be 2-3mm, and the fineness of the medium sand is 0.6-0.9;

e. napping operation: after the bonding mortar is plastered, immediately contacting the plastering surface with a trowel, and then bringing a rough surface on the surface of the mortar by using the trowel;

f. putty scraping: uniformly mixing 2 parts of gypsum powder and 1 part of glue according to the parts by weight, adding water to prepare putty, and scraping the putty on a wall surface;

g. scraping and coating paint: after the surface of the putty is dried, a layer of paint is scraped on the surface of the putty;

h. and (3) leakage prevention treatment: carrying out corner protection and painting on joints of the auxiliary window frame, the window frame and the window edge by using cement mortar, thereby sealing the joints;

i. foaming agent blowing: punching a foaming agent in the screw holes of the shear wall of the outer wall, and plugging the screw holes by using the foaming agent;

j. cleaning a wall surface: cleaning residual mortar, oil stains and floating ash on the wall surface;

k. coating interface mortar: uniformly mixing 8 parts of cement, 10 parts of medium sand and 7 parts of an interface agent according to parts by weight to prepare interface mortar, and smearing the interface mortar on a wall surface in a tooth-ash knife brush mode, so that the surface is a rough surface after the interface mortar is smeared on the wall surface;

l, preparing thermal mortar: uniformly stirring 20 parts of cement, 10 parts of fly ash, 2 parts of polypropylene short fiber, 4 parts of saddle-American copolymer condensed rubber powder, 2 parts of hydroxypropyl methyl cellulose, 6 parts of wood fiber and 10 parts of vitrified micro bubbles in parts by weight;

m. sprinkling: spraying water to wet the wall 24 hours before the heat-insulating mortar is coated, wherein the spraying standard is that the surface of the wall is not whitish;

n, coating thermal mortar: the heat-insulating mortar is smeared twice, the thickness of the first smearing is controlled to be 12-16mm, the mortar needs to be uniformly covered on the wall surface, and smearing and pressing can not be repeatedly carried out in the smearing process; after the first coating is finished for 24 hours, coating the second thermal insulation mortar, wherein the thickness of the second coating is controlled to be 20-21 mm;

o, maintenance: after the second heat-insulating mortar is smeared for 36 hours, sprinkling water on the heat-insulating mortar for maintenance until the surface of the wall body is not whitened during sprinkling water;

p, coating anti-crack mortar: and after the heat-insulating mortar layer is completely solidified, coating the anti-crack mortar, wherein the anti-crack mortar is coated in two times, the thickness of the first coating is 1.6-1.8mm, and then coating the second layer of anti-crack mortar, and the coating thickness of the second layer of anti-crack mortar is 2.6-2.8 mm.

In the step l, the thermal mortar is not reused after the standing time of the thermal mortar exceeds 1 h.

The invention has the advantages that: 1) the fine sand is added into the glue for gluing the inner wall, so that the smearing uniformity of the glue for gluing the inner wall in the construction process can be controlled, the hollowing condition of the wall surface is greatly reduced, and the hollowing benefit of the wall surface is reduced to below one per thousand from four per thousand.

2) Through improving a plurality of simple parameters, the whole construction time is greatly reduced, and the time can be saved by more than thirty percent.

Detailed Description

A wall surface construction process comprises the following steps: grinding the inner wall: wall grinding is carried out on the wall surface of the inner wall, the grinding depth is 3mm, and the flatness of the ground wall surface needs to be ensured in the process of wall surface grinding, so that the flatness deviation of the wall surface is controlled within 2 mm;

wall surface treatment: cleaning up dust and dirt on the inner wall surface and the outer wall surface;

gluing the inner wall: spraying a layer of glue on the surface of the inner wall, wherein the glue is uniformly sprayed in the spraying process; when the glue used in spraying is prepared, the ratio of the glue to water to the fine sand is 7:1:1, the fineness of the fine sand is less than 0.3, when the glue is applied to an inner wall, whether the glue is uniformly applied or not can be judged by observing the uniform distribution degree of the fine sand, and the situations of local over-coating and local under-coating are prevented;

scraping and plastering adhesive mortar: uniformly stirring 10 parts of gypsum powder, 10 parts of cement, 20 parts of medium sand and 13 parts of glue according to the parts by weight, adding water to prepare bonding mortar, scraping the bonding mortar on the surface of an inner wall, wherein the scraping thickness of the bonding mortar is controlled to be 2mm, and the mold fineness of the medium sand is 0.6-0.9;

napping operation: after the bonding mortar is plastered, immediately contacting the plastering surface with a trowel, and then bringing a rough surface on the surface of the mortar by using the trowel;

putty scraping: uniformly mixing 2 parts of gypsum powder and 1 part of glue according to the parts by weight, adding water to prepare putty, scraping twice in the putty scraping process, scraping in the transverse direction for the first time, scraping in the vertical direction for the second time, leveling the putty when the stubble is connected and the head is collected in the scraping process, wiping off dirty dust, and then performing the next process;

scraping and coating paint: after the surface of the putty is dried, a layer of paint is scraped on the surface of the putty;

and (3) leakage prevention treatment: the joints of the auxiliary window frame, the window frame and the window edges are protected and painted by cement mortar, so that the joints are sealed, and the leakage of the window edges can be prevented;

foaming agent blowing: punching a foaming agent in a screw hole of the shear wall of the outer wall, and plugging the screw hole by using the foaming agent to prevent water from flowing into a room through the screw hole after the outer wall is cracked;

cleaning a wall surface: cleaning residual mortar, oil stains and floating ash on the wall surface, leveling bulges larger than 10mm on the wall surface, filling the positions with cavities on the wall surface to be leveled, then roughening the flat and smooth surface, and roughening the wall surface by using a roughening machine;

coating interface mortar: uniformly mixing 8 parts of cement, 10 parts of medium sand and 7 parts of an interface agent according to parts by weight to prepare interface mortar, and smearing the interface mortar on a wall surface in a tooth-ash knife brush mode, so that the surface is a rough surface after the interface mortar is smeared on the wall surface;

preparing thermal insulation mortar: uniformly stirring 20 parts of cement, 10 parts of fly ash, 2 parts of polypropylene short fiber, 4 parts of saddle-American copolymer condensed rubber powder, 2 parts of hydroxypropyl methyl cellulose, 6 parts of wood fiber and 10 parts of vitrified micro-beads according to parts by weight, wherein the heat-insulating mortar cannot be reused after the standing time exceeds 1 h;

sprinkling: spraying water to wet the wall 24 hours before the heat-insulating mortar is coated, wherein the spraying standard is that the surface of the wall is not whitish;

coating thermal insulation mortar: the heat-insulating mortar is smeared for two times, the thickness of the first smearing is controlled to be 12mm, the mortar needs to be uniformly covered on the wall surface, smearing and pressing cannot be repeatedly carried out in the smearing process, and after the first smearing is finished, a trowel needs to be used for roughening the surface of the first layer of heat-insulating mortar when the heat-insulating mortar is about to be initially set; after the first coating is finished for 24 hours, coating the second thermal insulation mortar, wherein the thickness of the second coating is controlled to be 20 mm;

and (5) maintenance: after the second heat-insulating mortar is smeared for 36 hours, sprinkling water on the heat-insulating mortar for maintenance until the surface of the wall body is not whitened during sprinkling water;

coating anti-crack mortar: after the heat-insulating mortar layer is completely solidified, coating anti-crack mortar, wherein the thickness of the anti-crack mortar is 2.6mm in two times, galling the surface of the first layer of anti-crack mortar by using sponge after the first layer is coated, and then coating a second layer of anti-crack mortar, wherein the coating thickness of the second layer of anti-crack mortar is 3.1 mm.

Although the content of the invention is ninety percent same as that of 201810974693.2, fine sand is creatively added in the glue for gluing the inner wall, so that the roughness of the wall is increased, and the uniform degree of the glue for the wall surface is observed by constructors, so that the hollowness of the wall surface is greatly reduced, the content of cement is increased, the content of medium sand is reduced, the initial setting time of the wall surface is shortened, and the whole construction is greatly accelerated.

Claims (2)

1. The construction process for preventing hollowing of the wall surface is characterized by comprising the following steps of: the method comprises the following steps:

a. grinding the inner wall: grinding the wall body on the wall surface of the inner wall, wherein the grinding depth is 3-4 mm;

b. wall surface treatment: cleaning up dust and dirt on the inner wall surface and the outer wall surface;

c. gluing the inner wall: spraying a layer of glue on the surface of the inner wall, wherein the glue is uniformly sprayed in the spraying process, the ratio of the glue to water to fine sand is 7:1:1 during preparation of the glue used in spraying, and the mold fineness of the fine sand is less than 0.3;

d. scraping and plastering adhesive mortar: uniformly stirring 10 parts of gypsum powder, 10 parts of cement, 20 parts of medium sand and 13 parts of glue according to the parts by weight, adding water to prepare bonding mortar, scraping the bonding mortar on the surface of an inner wall, wherein the scraping thickness of the bonding mortar is controlled to be 2-3mm, and the fineness of the medium sand is 0.6-0.9;

e. napping operation: after the bonding mortar is plastered, immediately contacting the plastering surface with a trowel, and then bringing a rough surface on the surface of the mortar by using the trowel;

f. putty scraping: uniformly mixing 2 parts of gypsum powder and 1 part of glue according to the parts by weight, adding water to prepare putty, and scraping the putty on a wall surface;

g. scraping and coating paint: after the surface of the putty is dried, a layer of paint is scraped on the surface of the putty;

h. and (3) leakage prevention treatment: carrying out corner protection and painting on joints of the auxiliary window frame, the window frame and the window edge by using cement mortar, thereby sealing the joints;

i. foaming agent blowing: punching a foaming agent in the screw holes of the shear wall of the outer wall, and plugging the screw holes by using the foaming agent;

j. cleaning a wall surface: cleaning residual mortar, oil stains and floating ash on the wall surface;

k. coating interface mortar: uniformly mixing 8 parts of cement, 10 parts of medium sand and 7 parts of an interface agent according to parts by weight to prepare interface mortar, and smearing the interface mortar on a wall surface in a tooth-ash knife brush mode, so that the surface is a rough surface after the interface mortar is smeared on the wall surface;

l, preparing thermal mortar: uniformly stirring 20 parts of cement, 10 parts of fly ash, 2 parts of polypropylene short fiber, 4 parts of saddle-American copolymer condensed rubber powder, 2 parts of hydroxypropyl methyl cellulose, 6 parts of wood fiber and 10 parts of vitrified micro bubbles in parts by weight;

m. sprinkling: spraying water to wet the wall 24 hours before the heat-insulating mortar is coated, wherein the spraying standard is that the surface of the wall is not whitish;

n, coating thermal mortar: the heat-insulating mortar is smeared twice, the thickness of the first smearing is controlled to be 12-16mm, the mortar needs to be uniformly covered on the wall surface, and smearing and pressing can not be repeatedly carried out in the smearing process; after the first coating is finished for 24 hours, coating the second thermal insulation mortar, wherein the thickness of the second coating is controlled to be 20-21 mm;

o, maintenance: after the second heat-insulating mortar is smeared for 36 hours, sprinkling water on the heat-insulating mortar for maintenance until the surface of the wall body is not whitened during sprinkling water;

p, coating anti-crack mortar: and after the heat-insulating mortar layer is completely solidified, coating the anti-crack mortar, wherein the anti-crack mortar is coated in two times, the thickness of the first coating is 1.6-1.8mm, and then coating the second layer of anti-crack mortar, and the coating thickness of the second layer of anti-crack mortar is 2.6-2.8 mm.

2. The wall surface construction process according to claim 1, characterized in that: in the step l, the heat-preservation mortar cannot be used again after the standing time of the heat-preservation mortar exceeds 1 h.