1、 Basic construction conditions

1. Have the professional technical team of paving elastic floor.

2. Have conventional tools and some special tools for paving rubber floor.

3. Have independent construction environment to avoid cross construction.

4. The ambient temperature should be 6-35oc and the relative humidity should be 20-75%.5. There should be water and electricity interfaces and necessary lighting facilities on site.

2、 Requirements of base ground

1. The quality of base course ground should meet the requirements of code for acceptance of construction quality of building ground engineering (GB 50209-2002).

2. The flatness of the ground shall be measured with a 2m guiding rule, and the flatness error shall be less than 4.0 mm.

3. The strength grade of base ground should not be less than C20.

4. The moisture content of the base ground should be less than 4%, preferably less than 3%.

5. The base ground should be dry, not too rough, no sand, cracking, hollowing and other serious quality defects.

3、 Basic treatment

1. Clean the ground, and use the ground grinder to smooth and polish the ground, and select the abrasive cloth with the particle size of 16-24.

2. The floating sand should be removed from the floor with local sand rising, and then the interface agent should be used for roll coating.

3. For the local hollowing floor, the hollowing should be chiseled and repaired again.

4. The local cracked floor should be repaired, cut vertically along the cracks, and add corrugated steel bars in sections; Epoxy resin was used to fill the joint and 0.8mm quartz sand was sprinkled on the surface.

5. Apply interface agent to the local low concave area of the floor, and then use self leveling; Local high points should be polished by ground grinder.

6. After the foundation treatment, the treated place should be polished again.

4、 Self leveling construction

1. Clean the up to standard base course and apply the interface agent on the surface of base course with wool roller without omission. The next step of construction can be carried out only after the interface agent is completely dry.

2. Use self leveling mixing bucket to hold 6-7 liters of water (it can be adjusted appropriately according to the requirements of different self leveling instructions), and then slowly pour the self leveling cement into the bucket, and stir it with a blender while pouring, so as to make it uniform, stirring a bucket for about 3 minutes.

3. Pour the self leveling mixture onto the base course coated with interface agent, scrape evenly with self leveling grill (select different teeth with different thickness and different height), and then roll with defoaming roll. The defoaming roll shall move in a straight line, and twisting back and forth is strictly prohibited.

4. Self leveling construction should be completed at one time. If it can't be completed at one time and needs to be butted, it should be made into a slope at the butt joint to facilitate the secondary docking.

5. No one is allowed to walk before self leveling. Fine grinding can be carried out after it is completely dry (not less than 24h). Use a special ground grinder with 40-60 grit abrasive cloth for grinding. Use a vacuum cleaner to clean the dust while grinding. Use an angle grinder to repair the joint.

6. The second flatness measurement (2m ruler and special feeler gauge) shall be conducted on the self leveling surface after grinding and polishing, and the flatness error shall be less than 3.0 mm. Otherwise, it is necessary to grind and reach the standard before entering the floor laying process.

7. After the self leveling construction, the site ventilation shall be maintained. Before the floor paving, the hardness of the self leveling surface shall be tested (hardness scriber). The wire feeder shall cross the horizontal line of the hardness measurement template along the angle of 40-60 degrees. The surface hardness can be determined by the scratch depth and the damage condition of the intersection to ensure that the ground meets the construction requirements.

（1） Roll flooring

1. Before paving, the coiled floor shall be moved to the construction site in advance and unfolded to adapt to the site temperature of not less than 24h

2. According to the design requirements, setting out, pre laying and typesetting are generally based on the main entrance.

3. The coiled material can be seamless splicing or hot welding.

4. For coiled floor, it is recommended to use dispersed (acrylic) glue and stick it by scraping glue on one side.5. Acrylic glue is generally used for coil with thickness less than 2.5mm. For coil with thickness more than 2.5mm, two-component glue should be used, with single side scraping and pasting.

6. Seamless splicing is adopted, and seamless cutting rail cutter can be selected to cut and paste.

7. After the coil is laid, it should be rolled several times in order to reduce the walking on the floor and avoid the floor displacement and footprints.

8. The coil is hot welded. In order to ensure the welding effect, the residence time of the coil after laying should be more than 48h, wait for the glue to dry, and then conduct grooving welding.

9. After welding, when the welding rod is completely cooled, repair the welding rod with crescent blade.