Ground Engineering - Construction Technology polyethylene ground floor indoor

Polyethylene floor with wear, corrosion resistance, high strength, rich color and other characteristics, can be widely used in homes, offices, hospitals, schools, factories and other research projects.

Laying the floor are dry polyethylene job to adhesive-based, with less pollution, construction and convenient. During the construction process, the key is to pay attention to the following construction steps:

(A) Primary treatment: grass-roots level to deal with the relationship as strong as polyethylene adhesive, so this procedure is crucial.

(B) welds: After polyethylene floorboards laid, the joints between the floorboards together using PVC welding rod, so that the ground is more beautiful. Not scorch the floor when welding.

A construction preparation

(A) material preparation

(1) Floor Primer 3698

(2) putty 3668

(3) plastic floor

(4) Polyethylene floorboards: one piece of flooring, specification: 1.8m × 25m, another small floorboards, specifications for 608mm × 608mm.

(5) PVC welding wire

(Ii) construction equipment

List of major construction equipment

(C) operating conditions

    (1) Total drawings, and engineering practices in accordance with the specific amount of each part of the building, pick out a variety of materials were piled up and keep them safe.

    (2) ground should be dry, grass-roots must be clean, sturdy, no dust, no oil.

    (3) the guaranteed minimum indoor temperature + 5C.

(4) work should be preceded by a model, it must be approved by the quality inspection departments identified by the team before the organization model after model requires the construction is completed.

Two construction process

(A) the construction sequence

(B) construction methods

(1) Primary treatment: wait until the concrete floor is completely dry before they can start laying the ground polyethylene. First, the projection of the ground level concrete tick, clean the sediment, the site of tick chisel smooth.

(2) Floor Brushing primer: For a porous substrate, such as: concrete, lightweight concrete, paint mixed with 1 part of 3698 with 3 parts cold water; for non-porous base layer, such as: tile, polyethylene surface layer, asphalt, wood floor, etc., with no dilution of the lacquer or 3698 up to 0.5 parts of cold water mixed with 1 part of a solution to reconcile the 3698 paint brushing the grass, in the process of brushing with a brush or roller brush to avoid accumulation, otherwise the drying time will be lengthened. Brushing when the indoor temperature must not fall below + 5C after approximately one hour before the primer to dry and drying time with the grass roots, coating thickness, temperature and air humidity.

(3) self-leveling: After drying floor paint, floor flatness inspection, repair uneven ground, removing scum and dirt. With 3.3 parts of leveling powder mixed with 1 part water (by volume) with a high speed stirrer and stir well. Temperature control between + 5C and + 20C, then manually dumped on the ground, the thickness of no more than 10mm, when the thickness requirements when 10 to 15mm, need mixed sand, sand particle size 0 ~ 3mm, mixed with sand shall not exceed 50 %, if necessary, it can be leveled using a shovel. If several layers are leveling between each layer needs to repaint the floor primer. During operation, the operating room to close doors and windows, temperature controlled at + 10C ~ + 20C, + 20C in the state after about 30 minutes, self-leveling floor can be solidified before the mounting surface of the material after 24 hours.

(4) elastic line: Depending on the size and polyethylene floor plate arrangement, the pop-up ink lines in accordance with the requirements on cleared ground, prepare the next step of construction.

(5) Brush floor glue: After 24 hours, the self-leveling cleaning the surface with a smooth belt with a toothed blade to scrape the floor glue evenly over the surface, wipe the floor squeegee to control the thickness of 2mm or less , + 20C in the state, over 5 to 10 minutes to begin laying polyethylene floor. Wipe dispensing process, on the ground may not appear leakage wipe the place may cause polyethylene floor hollowing phenomenon.

(6) the laying of polyethylene ground: In order to facilitate the laying of personnel to operate, can start wiping glue side of the room began to wipe half the room, glue pending state reached laying caused to begin construction this half of the room:

① polyethylene floor flat on the ground have been gluing parts, leaving 2 ~ 3mm gap between each polyethylene floor;

② with a scraper to force the introduction of gas under the floor, and the floor will be pressed to make it to the floor adhesive junction firmly in the construction process, the temperature control at about + 20C. The flooring to be finished on this side, and then were on the other side of the room and gluing flooring. each floor and the wall leaving a 5mm gap. in laying the other side of the floor, pay attention and paved the adhesive rubber parts, both to avoid excessively thick, but also to avoid leakage of brush.

(7) welds: After flooring to be completed to confirm the floor surface without bubbling, after strong adhesive junction with the weld work can be carried out. In the weld process Note:

① welds once welded in place;

② welder welding time can not be at the same point on the ground too long, otherwise it will scorch the ground;

③ cutting PVC welding rod, when to cut in two steps follow the instructions.

(8) paste skirting:

① in the wall with a pencil to draw height by skirting a line parallel with the ground;

② straight line following parts cast plastic floor, at the same time, also cast in the back of the skirting rubber flooring, wait 5 to 10 minutes after the beginning of paste;

③ also using a scraper behind the air force launched skirting and skirting pressed. Plastic floor brush when it is necessary to avoid the glue is too thick, but also to avoid leakage of brush.

Three causes of quality problems caused by

(A) hollowing, shedding

    (1) due to low winter temperatures, plastic floor cold, after the arrival of the spring thaw the ground floor and the polyethylene bond is not strong, prone to fall off. Therefore, during the laying of polyethylene floor should maintain the specified temperature.

    (2) concrete base is not completely dry, with the evaporation of water vapor, bonding glue and affect the floor surface layer, the surface layer prone to hollowing, shedding.

    (3) 3698 primer when brushing the floor, no clean up or brushing the grass-roots level uneven, resulting in the surface layer of the adhesive is not strong grass-roots, causing hollowing or off.

    (4) In laying polyethylene floor, floor glue smear too thick; wipe rubber flooring tainted circumstances; polyethylene air under the floor is not completely drained; floor glue has dried and hardened laying will result in hollowing, shedding.

(B) Since the weld when welding in a little time to stay too long, resulting polyethylene ground appears burn marks, affecting the appearance of the floor.

(C) when the welding electrode, welding temperature does not meet the requirements, the electrode is not well connected with the polyethylene floor, leading off after welding.

Four quality standards and acceptance

(A) ensure that the project

(1) polyethylene flooring varieties, quality, size, color, pattern, grade must meet the design requirements and the existing national standards, with fabric adhesive material should be supporting.

Inspection method: observation, inspection and product certification inspection records.

(2) ground grassroots must meet the "Advanced Building Decoration Engineering Quality Inspection and Evaluation Standards" (Beijing) the corresponding provisions of section 2.4.

Inspection method: check the substrate acceptance records.

(3) surface layer and the base layer using an adhesive method of construction, the laying of the adhesive must be strong, not Alice, without hollowing (degumming), no excess glue bonding.

Inspection method: observe, touch and hand-foot inspection.

(Ii) basic items

(1) polyethylene floor surface quality should meet the following requirements:

Qualified: surface clean, clear pattern, the same color, tight joints, surrounding straight, no glue marks, and the transfer of the wall closely.

Excellent: Surface clean, clear pattern, the same color, tight joints straight appearance, at the patchwork pattern, pattern match, no glue marks, and the transfer of the wall tight, yin and yang angle Founder revenue side.

Inspection method: observation checks.

(2) to drain pan and water: water slope is correct, consistent point of view;

(3) the laying quality baseboard shall meet the following requirements:

Qualified: surface clean, strong adhesion, flat seams, a uniform wall thickness.

Excellent: Surface clean, strong adhesion, flat seams, a uniform wall thickness, catchy straight.

(4) welds: dense, straight, consistent width.

(5) the quality of ground trim shall meet the following requirements:

Qualified: Materials accurate size, tidy corner, stitching tight.

Excellent: The material size is accurate, tidy corner, tight stitching seams straight.

(Iii) Tolerance project

Five product protection

(A) polyethylene floor laying good ground, there should be effective and reliable measures to prevent pollution; to timely clean clear remaining on polyethylene floor floor glue.

(B) minority types (electricity, water, ventilation, equipment installation, etc.) of the various activities should be done before the polyethylene flooring, to prevent damage to the floor.

(Iii) a variety of corrosive polyethylene unpaved ground floor anti-acid and alkali.

Six security

When (a) the floor using 3698 primer, to wear protective gloves, then glue on the skin, wash with soap and water;

(B) In 3668 the use of self-leveling, dust may be irritating to mucous membranes and respiratory system. Powder, dust, solution may cause skin irritation. After exposure to these materials should immediately wash with soap and water, such as burns, seek immediate medical attention.

(C) significant exposure to the construction process tool and electric equipment. When using the tool, pay attention to force uniform, not blindly force, avoid hand was cut; in the use of electric equipment is strictly prohibited equipment to people, to avoid scalding.