No spark technology key demand of fine stone concrete

No spark fine stone concrete technical key requirements ( 1) Strict inspection system, don't angry, Explosion-proof) Surface and hardening the specimen after the stone material, should be on the emery wheel friction test, did not find any instant spark in the test, that is qualified. When test should comply with the 'standard of building ground engineering construction quality acceptance' ( GB50209－2002) In appendix A of the rules. ( 2) Not angry all kinds of road surface of the laid, should be consistent with other corresponding section surface of the provisions of this section. ( 3) When the surface pressure light, such as concrete is too thick, may not arbitrarily add water; Too thin, such as concrete shall not be mixed with dry cement surface, but can be respectively mixed with compared to cooperate with dilute or thicker misfire and fine stone concrete mixing after calender, so as not to reduce the intensity of surface or surface peeling.