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Cast stone,Its used for the Submerged Scraper Conveyor,made in China:
Origin: China
Brand: Qingdao Kechengyi
Quality standard:
1, The material of cast stone is organizational structure and uniform, no crack, no obvious line, all acid layer, no perforation, no delaminating.
2, The material of cast stone should be in the physical and chemical properties: acid degree of more than 95, pickled safety qualified, bibulous rate is less than 1, 80 ~ 100 Mpa compressive strength.
3, Geometry size conform to specified requirements.
Attention note when changed:
1, Use wire brush to clean dust on the surface of the casting stone, subsidiary material such as sand, etc.
2, Damp, rain wash the cast stone should be drying process in advance.
3, According to the different specifications, the special profiled piece sample points are piled up.
4. Tchnical conditions, strictly control the construction environment, the environment temperature is greater than 12 ℃, humidity is not more than 80%, quality assurance, don't catch up.
Cement preparation:
1, According to the characteristics of the site construction environment, review the materials provided, and the site preparation sample block, to determine the appropriate ratio.
2,Strictly match ratio, must press a design formula based on to the formula, the relevant provisions of the chemical construction, rubber to stir well, without impurities without powder.
3,Cement along with it, make good cement should be finished in half an hour, it is not allowed to be used for the initial setting and hardening of cement.
Casting stone of pavement:
Casting stone of pavement construction by a slurry method
1, Laid 10 ~ 15 ㎜ thick cement, then choose a good cast stone distance in front of the 2 ㎝, the pay-off of the impervious layer down on superficial preset, reoccupy hammer vibration tapping in place. Reach the bottom of the piece of wood pulp layer of dense, ash seam right.
2, Paving order: from high to low, first after cooking, equipment foundation ground and water retaining wall.
3, Pavement shall not appear cross stitch, facade can keep horizontal seam.
4, Cement pavement plate and plate seam 10 ~ 15 ㎜, combined with 10 ~ 15 ㎜ layer thickness.
Curing processing:
1, Anticorrosive layer of each process is completed, must be can solidify rear process under construction. So that the lining layer has certain mechanical strength and corrosion resistance. Maintenance drying has a certain relationship with the temperature and humidity of the air; Under normal conditions all wants room temperature curing dry lining. To avoid the rain and sun exposure.
2,When necessary, set the windproof, waterproof, moistureproof, prevent sand, when the natural environment can guarantee the normal construction, can take the heat curing, improve the environment temperature to ensure the engineering quality.