Don't angry scene of fine stone concrete construction technology

1) no spark fine stone concrete construction Operating process ( 1) The concrete system of checking strictly, no spark surface of the raw materials used in the experiment method in the appendix A of test qualified rear can use. No spark surface strength grade of concrete is C20 commonly, construction reference for aggregation: cement, sand, gravel: water = 1:1. 74-2. 83:0. 58 ( Weight ratio) 。 Materials strict measurement, with mechanical agitation, feeding programs for: gravel and cement to sand, water. Requirements and concrete, mortar consistent color mixing time not less than 90 s, made a good mixture used up within 2 h. ( 2) Clean up before construction should be on the surface of the earth at the grass-roots level, mortar skin, ash and clean up debris, oil stain mark washed, spread with grey 1 d before render, grass-roots water wet, but there is no water. Use tools such as shovel and broom first bumps at the grass-roots level, lumps and bumps and so on, and clean the dust, combined with surface solid guarantee. ( 3) Render the ash when for cement mortar firing ground, should according to the conventional method to do the leveling layer, specific construction methods as shown in the cement mortar screed-coat 'practice'. Such as basic surface level off, can not leveling layer, directly laid on the surface at the grassroots level. ( 4) Mixture ratio measurement must be accurate, mixture must stir well before using. ( 5) Paving layer 1) Don't angry, Explosion-proof) All kinds of road surface of the laid, should comply with the corresponding surface construction operation points in this chapter, such as bread stick ash screed, etc. 2) Shop with boards in advance when separated into no more than 3 m wide extents, wipe equably on the surface of the grassroots that has wet first sweep a slurry, then warehouse order paving, increases with the increasing spread scrape to evenness with long wooden poles. Then use iron roller rolling back and forth freely crisscross pulp out 3 ~ 5 times to surface, wipe with real rub flat, then use iron float calender. To be collected water pressure light again after 2 ~ 3 times, to wipe lines creasing screeding calender. 3) Block of lien in addition to meet the requirements of this standard, it is a group should be retained for inspection flame surface not hair of the specimen. 2) After curing the last calender again according to the temperature ( Room temperature conditions for 24 h) , water conservation, time not less than 7 d, don't allow people move around and stacked items during curing.