Concrete is inattentive and serious, root ministry all is inattentive pebble, without grout. The quality problem of concrete is a kind of problem with construction the commonnest phenomenon, affect quality exterior, it is project of a face. Must do the each preparation work before good construction in the process of construction so, tell sb one's real intentions should reach the designated position, working procedure should reach the designated position, cannot have the careless inattentivegeneral idea on ideology. Concrete appears to show muscle phenomenon badly, leakage can see apparently in the picture advocate muscle. Possible reason is namely in the beat process of concrete, vibrating head did not extend bottom, cause bottom concrete not close-grained, such problem should be to attribute more serious quality problem. Should cause in the process of processing take seriously, avoid worker privately to undertake repairing. Concrete falls board the place appears privately of staff of the work after serious edge damage drops horny phenomenon uses cement mortar to undertake make level is repaired. Such practice cannot be taken actually, assure the union with cement mortar and former very good concrete very hard, easy occurrence sky rouses the phenomenon of craze. Concrete positive character is frame-up, leakage oar is serious, this is issue of more general quality of a few construction. The fine stone concrete that takes fast first-class step namely to the processing of these problems undertakes repairing, but I think the most crucial still is to want to prevent and put an end to these accidents, want to reduce the presence of these problems as far as possible, the control before be engaged in is made, father to close the quality of each working procedure. Oar of leakage of concrete root ministry is serious, impressions quality is too poor. Appear the position that such reason may be pattern plate flat-fell seam is not exact, concrete irrigates the grout after building to flow from flat-fell seam place, cause grout to be short of break, this place after form removal sees many pebble only. The fine stone concrete that fast first-class step takes after the processing technique wants authentic to divide undertakes repairing just going. The concrete after the form removal that oppose a limit drops, appear such phenomenon is probable because the time of form removal is premature,be, concrete has not be over completely caky; The carpentry when form removal uses pretty force to knock pattern plate, cause local concrete to drop. This also is a of construction site more general issue, the key is the time that should dominate good form removal and worker must notice when exercise, want to have the consciousness that finished product protects. After cop of water and electricity presses groove irregular, impressions is bad. To the installation of service pipe, some places are the method that uses steel tube to press groove on concrete face, but can decrease somewhat to the ply of concrete, very it's hard to say such practice has an effect to the structure. Better way is the setup that having hose in adornment phase, make full use of make level layer and the tall difference that lay a moment that stick porcelain undertake handling, as far as possible incorrect structure causes an effect.