What is the acceptance standard for plastering of interior and exterior walls of residential project

0 2 plastering engineering quality control and acceptance standards.

First, the quality requirements of raw materials.

1. Cement Cement must have a factory certificate, and be stacked separately according to the variety, strength grade, and date of delivery, and keep it dry. Different varieties of cement should not be mixed.

2. Sand plastering should be made of medium sand (average particle size, or coarse sand mixed with medium sand, as little as possible with fine sand (average particle size, not suitable for the use of extra-fine sand (average particle size< sand must be sieved before use, and must not contain impurities. The mud content should meet the standard.

Second, construction quality control.

1. The dust, dirt, and oil stains on the surface of the base layer before plastering should be cleaned and moistened with water.

2. The variety and performance of all materials of plastering should meet the design requirements, and the setting time and stability of cement should be qualified. The mix ratio of the mortar should meet the design requirements.

3. The plastering project should be carried out in layers. When the total thickness of the plaster is greater than or equal to 35mm, strengthening measures should be taken. The plastering on the surface of the junction of the foundation of different materials should be strengthened to prevent cracking.

4. The plastering layer and the base layer and the plastering layer must be firmly bonded, the plastering layer should be free of delamination and hollowing, and the surface layer should be free of ash blasting and cracks.

3. Quality acceptance criteria.

1. Generally, the plastering surface should be smooth and clean, the joints should be smooth, and the lattice joints should be clear;

2. The surface quality of the decorative plastering project shall comply with the following provisions:

1) The surface of the brushstone should be clear, evenly distributed, tight and flat, consistent in color, and there should be no traces of falling grains and joints.

2) The chopping lines on the surface of the fake stone should be uniform and straight, the depth should be consistent, and there should be no leakage chopping; The sunny corners should be stacked horizontally and leave a wide and narrow non-chopped edge strip, and the edges and corners should be undamaged.

3) The surface of the dry clay stone should be consistent in color, no slurry leakage, no leakage sticky, the stone particles should be firmly bonded and evenly distributed, and there should be no obvious black edge at the sunny corner.

4) The surface of the false brick should be smooth, the grooves should be clear, the joints should be neat, the color should be consistent, and there should be no defects such as corner loss, peeling, and sanding.

3. Allowable deviation and inspection method of plastering

This standard is excerpted from "Quality Control and Acceptance of Construction Projects" (2002 edition).

Wall plastering quality acceptance criteria:

Main content: The quality of the wall plastering layer in the main control project, the appearance quality of ordinary plastering and advanced plastering in the general project, the flatness of the wall, the yin and yang angles, and the grid strip (seam) are required.

Main control project: The wall plastering layer and the base layer and between the plastering layers must be firmly bonded. The wall plastering layer should be free of delamination and hollowing, and the surface layer should be free of ash blasting and cracks.

Number of inspections: at least 3 places on each wall, that is, at both ends of the wall plus the middle part; When the length of a single wall exceeds 3m, 1 place should be added for every 1m increase, and the area of each place shall not be less than 1, which shall be evenly distributed along the vertical surface of the wall.

Whether there is leakage on the wall, inspection method: observation and inspection after rain.

First: check the quality of cement brand and sand, second, check the flatness and verticality of the wall; Third, whether the joints of the reinforcement strips are tight and smooth without cracks; Fourth: whether the yin and yang angle hooks at the junction of beams, columns and shear walls are vertical and whether the edges and corners are clear; Fifth, whether there is cracking in the wall plastering.

Now if you want to check the quality of plastering, you should mainly grasp these points, good luck

The specifications and standards for the acceptance of exterior wall plastering are as follows:

1. The surface layer of exterior wall plastering shall not have cracks, plastering marks and joints.

2. The bonding between the plastering layers and between the plastering layer and the base layer should be firm and not hollow. The appearance quality requirements of exterior wall plastering are smooth surface, clean, consistent color, yin and yang angle leveling, joints are smooth, wall vertical and grid is straight.

3. Exterior wall window sills, lintels, awnings, balconies, pressing roofs and protruding waist lines, etc., should be made above the slope of flowing water, and below should be done with drip lines. The depth and width of the drip line should not be less than 10mm, and it should be neat and consistent.

4. The dividing line between the exterior wall plastering and the balcony, stairs and other interior walls should be separated by aluminum alloy strips, and should be set vertically, and the upper and lower floors should be aligned.

What are the general steps of wall plastering?

1. Before plastering, it is necessary to clean up the wall dust and clean it, if it is not cleaned, there will be many defects in the follow-up work, which will affect the entire decorative effect.

2. After cleaning up, don't rush to construction, first moisten the wall, this preparation is carried out the day before plastering, moisten the wall by watering, maintain the humidity of the wall, ensure that the wall is not dry when plastering, in order to prevent the wall from cracking, you can hang steel wire mesh at the junction of the mixed cement and concrete wall.

3. For the thickness of the plastering layer, it should be decided after on-site measurement, according to the flatness and vertical situation of the wall, which are the two important indicators to determine the thickness of the plaster. The ash cake is generally made of 1:3 cement mortar, and the shape is square, about 30 to 50 mm.

The specifications and standards for the acceptance of exterior wall plastering are as follows:

1. When plastering and making ash cakes, we should pay attention to the axis of the opening, the axis of the opening must be uniform, the ash cake should be straight, flat, unobstructed, and the distance of the ash cake should not be too large.

2. Secondary plastering should be used at the junction of the door and window frame and the wall, and attention should be paid to the phenomenon of straight and flat, regular edges and corners, consistent color, and no cracks and hollows during construction.

3. When plastering the interior wall, pay attention to the wire box, air conditioning port, exhaust hole, and pipeline, so that the pipeline can be installed.

4. The wall plastering should be stirred in proportion, but before plastering, the interface binder treatment should be carried out, and the wall plastering should be made of 1:1:6 mortar for the second time scraping and pressing, and the appearance must be lubricated and flat, without joints, without cracks and hollowing.

Exterior plastering

The surface of the base layer should be kept clean and tidy, without slurry and oil stains. The junction between the door and window openings and the wooden door and window frame is filled with cement mortar, and the scaffolding eye should be blocked first. The shear wall needs to be washed with oxalic acid.

Nailing steel wire mesh: After the base layer is treated, nail the steel wire mesh at the junction of masonry and frame columns, beams, structural columns, shear walls, etc.

The steel wire mesh meets the following requirements: the diameter is not less than 24 iron wires, the mesh is 20 times 20 steel wire mesh, fixed with steel nails or nails every 250mm plus iron sheets, the width of the steel wire mesh is 300mm, and the lap width of different base layers is not less than 100mm on each side, and the hanging net should be uniform and firm, and it shall not be fixed with nails on the masonry.

In accordance with the provisions of the fourth chapter of the plastering project of the Code for Construction and Acceptance of Building Decoration Engineering, the plastering standards are as follows:

1. Ceiling: slats, hollow bricks, cast-in-place concrete - 15 mm; Precast concrete – 18mm; Metal mesh – 20mm.

2. Interior wall: ordinary plastering - 18mm; Intermediate plastering - 20mm; Premium plastering – 25mm.

3. Exterior wall - 20mm; Leg and protruding wall part - 25mm.

4. Stone wall - 35mm.

The above are the thickness of the plastering layer.

The purpose of controlling the average total thickness of the plastering layer is mainly to prevent the plastering layer from falling off. Ceiling plastering, the plastering layer relies on the adhesion of the plastering mortar (or mortar) and the ceiling surface, so that the plastering layer can stick to the roof surface, when the plastering layer is too thick, the self-weight of the plastering layer exceeds the adhesion force, the plastering layer will automatically fall down.

And because the size of the adhesion is related to the smoothness of the roof surface, the smoother the roof surface, the smaller the adhesion force. Therefore, the control thickness of the plastering layer of slats, hollow bricks and cast-in-place concrete roof surfaces is smaller than that of precast concrete roof surfaces. If there is a metal mesh on the ceiling surface, the thickness of the plastering layer on the metal mesh can be larger because the mortar can be embedded in the grid, which increases the tie force.

Wall plastering, the plastering layer relies on the adhesion between the plastering mortar and the wall and the friction between the plastering layer and the wall, so that the plastering layer can stick to the wall. When the thickness of the plastering layer is too thick, and the weight of the plastering layer exceeds the sum of friction and adhesion, the plastering layer will fall off.

And because the cohesion and friction are related to the degree of smoothness of the wall, the rougher the wall, the greater the cohesion and friction, therefore, the thickness of the stone wall plastering layer is greater than that of the brick wall.

The thickness of the interior wall plastering layer should be determined according to the plastering grade, and the thickness of the advanced plastering control is larger than that of ordinary plastering, which is due to the fact that the surface flatness of the advanced plastering is higher than that of ordinary plastering, that is, the allowable deviation of surface smoothness is smaller, and the surface flatness of the plastering layer is adjusted by the thickness of the mortar layer, and the higher the surface flatness, the more generous the thickness of the mortar layer used to adjust.

The quality acceptance specifications of the exterior wall plastering standard requirements are as follows:

The National Standard of the People's Republic of China GB50210-2018 "Code for Quality Acceptance of Building Decoration and Decoration Projects".

The National Standard of the People's Republic of China GB50300-2013 "Unified Standard for Acceptance of Construction Quality of Construction Projects".

National Standard of the People's Republic of China GB50327-2001 "Code for Construction of Residential Decoration and Decoration Engineering".

At this stage, how to carry out the basic situation of interior wall plastering acceptance by construction enterprise personnel, and what is the main acceptance content? The following is the relevant content of the professional construction terminology of Zhongda Consulting to sort out the acceptance standards for interior wall plastering, and the basic situation is as follows:

Basic provisions of the acceptance standards for interior wall plastering:

The surface quality of the general plastering project shall comply with the following provisions:

1. The surface of ordinary plastering should be smooth, clean, smooth, and the lattice seams should be clear.

2. The surface of the advanced plastering should be smooth, clean, uniform in color, without plastering, and the lattice seams and gray lines should be clear and beautiful.

Test Method: Observation; Hand touch to check.

The plastering surface around the corners, holes, grooves and boxes should be neat and smooth; The plastering surface behind the pipe should be flat.

Test Method: Observation;

The total thickness of the plastering layer should meet the design requirements; Cement mortar shall not be plastered on the lime mortar layer;

The allowable deviation and inspection method of the quality of the general plastering project should be in accordance with the provisions of the table.

Table Allowable deviation and inspection method of general plastering.

Item Item Allowable Deviation Test Method Ordinary Plastering Advanced Plastering.

1 Elevation verticality 4 3 Check with a 2 m vertical inspection ruler.

2 Surface flatness 4 3 Check with a 2 m ruler and feeler gauge.

3 Yin and Yang angles are square 4 3 Check with a right-angle detection ruler.

4 Grid strip (seam) straightness 4 3 Use a 5 m line, less than 5 m pull through the line, and check it with a steel ruler.

5 The straightness of the upper mouth of the wall skirt and the leg 4 3 Pull the 5 m line, less than 5 m pull through the line, and check it with a steel ruler.

Note: 1) For ordinary plastering, item 3 of this table can not be checked;

2) Ceiling plastering, the surface flatness of item 2 of this simple blank table can not be checked, but it should be smooth.

After the house is bought, it has to be decorated, especially the decoration of the wall is very important, take the interior wall plastering, are particularly particular, such as the interior wall plastering steps must be strictly implemented, if the operation is improper, it is likely to lead to the decoration error, thereby affecting the quality of the entire project. Next, I will introduce to you what are the acceptance specifications for interior wall plastering?

Generally, the plastering surface should be smooth, the joints should be smooth, the lattice joints should be clear, the surface of the brushed stone should be clear, evenly distributed, tight and flat, the color should be consistent, there should be no traces of falling grains and joints, the chop lines on the surface of the fake stone should be uniform and straight, the depth should be consistent, there should be no leakage chopping, the yang corner should be cross-stacked and leave a width and width consistent without chopping edges, and the edges and corners should be no damage.

Precautions for interior wall plastering construction.

According to Qeeka Home experts, all materials must meet the requirements during construction, each layer of the car should be firmly bonded before the annihilation, no delamination, hollowing, cracks and other defects, for holes, slots, box size to be correct and square, neat, the back of the pipeline should be plastered and smooth, the clear water line and the drip groove flow slope should be correct, the drip line should be straight, the depth and width of the drip tank should be less than 10mm, so that it is neat and consistent.

According to the baseline of the wall, hang vertically at the corners of doors and windows, buttresses, walls, etc., and set the plastering cake, so that the wall can be filled with reinforcement to control the flatness of the wall. The surface should be smooth and flat. Be consistent with the depth and width of the grid bars.

When the base layer is treated, the surface is sprayed mechanically or a broom is used to shake off a layer of 1:1 gruel-like cement mortar, and the connection between the concrete and the brick wall is nailed with diamond wire mesh, and the steel wire mesh is removed before nailing, floating ash and other impurities, and the steel wire mesh should be smooth and tight.

Conclusion: What are the above contents about the acceptance specifications for interior wall plastering? I hope it can help you. I believe that after the introduction of the content, you will have a better understanding of the precautions for interior wall plastering construction, and if there is a need in the future, you can also refer to the content.

The exterior wall plastering acceptance specifications and standards generally follow the national standard GB50327-2013 "Construction Engineering Acceptance Code", and the specific provisions are as follows:

1.Before plastering, the completed wall should be inspected to ensure that its surface is smooth, free of grooves, sanding, cracks, paint penetration and other traces.

2.When it is necessary to plaster the wall, it should be reasonably cut according to the thickness of the plastering layer, the nature of the wall foundation, the position of the groove and the requirements of the line, and the mortar with good gradation should be used.

3.The plastering layer is layered according to the design thickness, and each excavation layer should wait for 2-3 days after plastering.

4.The surface of the plastering layer should be kept flat, the horizontality should meet the design requirements, and the verticality error of the façade should not be greater than 5mm.

6.The plastering place must be smooth, and there can be no sanding, peeling, cracking and other phenomena.

7.The final acceptance should be inspected with the naked eye and professional tools to ensure that the surface of the plastering layer is smooth, no cracks, no shedding and carbonization, etc.

The above are some conventional exterior wall plastering acceptance specifications and standards, and the specific acceptance criteria need to be analyzed and adjusted according to factors such as different regions, different materials and design requirements. It is recommended to actively refer to the relevant standards during acceptance, and if necessary, invite professional inspection agencies or supervisors to check.