No spark fine stone concrete ( Explosion-proof) Surface engineering inspection quality acceptance of the batch record

No spark fine stone concrete quality acceptance control project: 1, no spark of fine stone concrete explosion-proof) Facing the gravel should choose marble, dolomite and other stone processing and become, with metal or stone hit not happen spark for qualified; Sand should be hard and rough surface, the particle size should be 0. 15 - 5 mm, silt content should not be greater than 3%, organic matter content should not be greater than zero. 5%; Cement should be used in ordinary Portland cement, the strength grade should not be less than 32. 5; Points on the surface of fillet not happen spark materials should be adopted. Should always check when making up, shall not be mixed with metal or other impurities prone to spark. Inspection and check the product qualified certificate and test report. 2, don't angry, fine stone concrete ( Explosion-proof) The strength level of the surface, comply with the design requirements. The proportion of check list and inspection report. 3, no spark fine stone concrete pavement, and the next layer should be combined with strong, no empty drum, no crack. With a small hammer check the tap. Note: empty drum area should not be greater than 400 cm? And every nature between ( Standard room) No more than 2 can be neglected. 4, no spark fine stone concrete ( Explosion-proof) The surface of the specimen, which must be inspection. Check the test report. The surface of general projects: 1, the surface should be close-grained, no cracks, defects such as honeycomb, ballast-surface. Observe check. 2, line that play a base and metope should closely integrated, highly consistent, uniform wall thickness. Tap with a small hammer, steel rule check and observation. 3, in 2 m by feet, and wedge feeler check surface roughness, the allowable deviation, 5 m wire and steel check the straightness of the allowable deviation.