Planting bar glue used in governance Liang Zhongzhu installation error of crack

Governance Liang Zhongzhu installation error produced by the crack products used to governance Liang Zhongzhu device fault attack crack, causing elements: (1 1) Compression of concrete and reinforced concrete beam is the hard palate tensile steel. If hair effect small diameter instead of a large diameter of main reinforcement, or put the number of main reinforcement and leak put less structure reinforcement, or stirrup device is not standard, using defect steel, etc. , can form beam tensile strength is insufficient, the crack load effect under attack. （ 2) Gate position ahead of schedule, because of the strength of the beam, under the upper construction load effect, the tension zone of the beam ( The bending is apart from the largest part of the) Cracks. 2. Solution: ( 1) View the practice of beam crack reason, according to the shade project acceptance record, indeed because of main steel bar diameter or number less than or less than planning rules or use of defective steel bar, and when the tension zone of the formation of beam crack, it is necessary to carefully accounting, choose the necessary reinforcement reinforcement. Generally choose 'active pressure grouting skills for perfusion JGN - cracks Resin grouting method close processing, or choose 'zdxyJGN - Building structure glue 'posted outside the steel plate or steel reinforcement, or selects prestressed reinforcement, to ensure the use safety of artifacts. Strengthening the planning and construction, it is necessary to responsible by talented and experienced units. （ 2) By the view, really to premature for ripping, construction load beyond planning rules and the onset of crack, the width of the seam should be measured, when the slit width is less than 0. 3 mm, that is, choose 'YI - 302 concrete poured again beautiful seam an agent 'cement slurry or' RG polymer mortar 'closed processing. When the seam wide at 0. 3 mm, it is necessary to choose 'active pressure grouting skills' will 'JGN - Resin grouting grout perfusion 'full aperture, aperture gluing shut down into all, avoid the reinforcement corrosion. The precondition of closed fracture is reinforced with planning rules, concrete strength grade qualified, crack is now stable.