What is the method of cement pavement repair mortar

1, the ground grass-roots level treatment: before construction, the same need for the ground grass-roots level treatment, to ensure that the ground hollow drums, blocks and other defects have been repaired or eradicated. And to ensure that the ground grass-roots level clean, no construction obstacles. In addition, the need for the root of the completed wood products wrapped, the root of the original indoor facilities wrapped or insulated with materials.

2, elevation plaster cake: based on the thickness of the type of ground paving decorative materials and finished surface standard line to determine the leveling thickness, general surface plaster thickness of not less than 20mm, in the wall popping up leveling control line. According to the leveling control line along the wall around the ash cake, ash cake size is generally 5x5cm size, horizontal and vertical spacing of 1.5-2.0 meters, ash cake on the plane that is the ground surface elevation. If the room is relatively large, must also wipe the standard reinforcement. Laying plaster cake and the standard rib of the mortar material ratio are the same as the mortar of the ground.

3, brush cement slurry: the role of cement slurry is to make the cement mortar and the ground more closely. Cement slurry needs to be prepared in accordance with the ratio of 1:0.5, after modulation, use brooms and other tools to brush to the ground, forming a combination of layers.

4, paving cement mortar: after painting cement mortar, paving cement mortar, mud mortar ratio of cement: sand = 1:2, should be stirred evenly. After paving cement mortar, use long wooden bar to pat and rub flat, so that the mortar and grass-roots level combination is dense.

5, surface matte treatment surface calendaring in two times. The first time in the cement mortar condensation slightly backwater, people step on the footprints, but not sinking, spread the dry cement surface with an iron trowel calendaring, from the corners to the large surface, the order of compaction and smoothing, to be the cement mortar before the final condensation of the second calendaring, with an iron trowel will be the first time to leave the smoothing of the smoothing of the smoothing texture flattening, compacting, and calendaring. And check the flatness with a ruler at any time.

6, finish maintenance surface layer 24 hours after calendaring, in the surface layer of sawdust or other materials covered with sprinkler maintenance, keep wet, maintenance time of not less than 7 days, compressive strength of 5Mpa before people. Cement mortar leveling method of construction, the requirements of the surface layer and the grass-roots level bonded firmly, should not be hollow drum; the surface should be compacted and calendared, do not allow cracks, peeling, sand and other defects.