Before plastering, how to remedy the exposed reinforcement caused by digging the wall?

Scope of application \ r \ n \ r \ Civil engineering maintenance and foundation decoration of various buildings. \r\n\r\n3.0 Responsibilities \r\n\r\n3. 1 The Engineering Department will send someone to determine the specific maintenance plan according to the site conditions, and the relevant personnel of the Management Office will implement it. \r\n\r\n3.2 The maintenance process is supervised by the technical director of the management office, and the engineering department will send someone to accept it after the maintenance. \r\n\r\n3.3 The manager of the engineering department gives guidance to important maintenance projects and conducts spot checks on general maintenance projects. \r\n\r\n4.0 Maintenance principle \ r \ n \ r \ nTake economy, rationality, safety and practicality as the principle, and pay attention to saving maintenance materials on the premise of ensuring the use function and normal operation. \r\n\r\n5.0 Maintenance basis \r\n\r\n5. 1 meets the requirements of the maintenance plan or design drawings drawn up by the Engineering Department. \r\n\r\n5.2 conforms to the relevant provisions of the quality inspection and evaluation standards for house decoration engineering. \r\n\r\n6.0 Standards for various maintenance projects \r\n\r\n6. 1 foundation \ r \ n \ r \ n6. 1 such as broken walls or serious corrosion and peeling. \ r \ n \ r \ n6.1.1.1The damaged loose parts shall be chiseled to a solid layer or the weathered, shelled, corroded and loose parts shall be removed. \r\n\r\n6. 1. 1.2 Repair the damaged toe with 1.3 cement mortar, and make a slope at the toe to facilitate drainage. \r\n\r\n6. 1. 1.3 Restore the finishing of the footing \r\n\r\n6. 1.2 If cracks appear in the foundation wall or uneven settlement occurs, \ r \ n \ r \ n6 \r\n\r\n6. 1.2.2 If there is an expansion trend, it shall immediately notify the engineering department and ask the development unit to send professional engineers to jointly check and identify. \r\n\r\n6. 1.2.3 If the situation is serious, emergency evacuation measures should be taken in addition to notifying the professionals of the engineering department and the development unit. \r\n\r\n6.2 beam, column and slab \r\n\r\n6.2. 1 exposed reinforcement \ r \ n \ r \ n6.2. 1 chisel the loose layer of exposed reinforcement. \r\n\r\n6.2. 1.2 Clean with a wire brush. \r\n\r\n6.2. 1.3 After sufficient water spraying and wetting, brush the plain cement slurry layer evenly. \r\n\r\n6.2. 1.4 Repair with high-grade cement mortar, and repair the veneer as required if necessary. \r\n\r\n6.2.2 is cracked \ r \ n \ r \ nPlease refer to the "Floor Cracks" maintenance procedure in the indoor maintenance procedures. \r\n\r\n6.2.3 has holes \r\n\r\n6.2.3. 1 Chisel loose concrete around the holes, and use sandpaper to grind off rust on the exposed tendons. \r\n\r\n6.2.3.2 Clean the holes thoroughly with effective tools such as wire brushes. \r\n\r\n6.2.3.3 Fully spray water to wet the inner walls of holes and holes. \r\n\r\n6.2.3.4 If there are holes, you should brush plain cement mortar first, and then fill them with high-grade cement mortar, smooth them and polish them. If the holes are large, fine concrete with higher grade than the original concrete (beam or column or slab) should be used for filling and curing after brushing plain cement. \r\n\r\n6.2.3.5 Complete the renovation according to the original standard. \r\n\r\n6.2.4 If there is any serious damage (such as deformation and crack exceeding the specified range), it shall immediately notify the engineering department and the development unit, and invite professional technicians to be present for inspection and appraisal, and then make a repair or reinforcement plan. \r\n\r\n6.3 Wall \ r \ n \ r \ nThe maintenance of wall structure is suitable for the treatment of surface damage of plastering layer and surface damage and corrosion of masonry materials, as well as settlement cracks and temperature cracks that have not endangered safety. The maintenance of the wall should be carried out when the uneven settlement of the structure has stabilized and the cracks are no longer developing (if the foundation settlement is still developing, the foundation should generally be done first). After the foundation is reinforced, the wall cracks shall be maintained) \r\n\r\n6.3. 1 cracked wall \r\n\r\n6.3. 1. 1 First, the decorative surface around the cracks shall be chiseled, and the loose layer of masonry shall be chiseled to a solid layer. \r\n\r\n6.3. 1.2 Clean the impurities in the tank with a wire brush, and then fully spray water for wetting. \r\n\r\n6.3. 1.3 Brush a plain cement slurry evenly. \r\n\r\n6.3. 1.4 Use 1:3 cement mortar which is one strength grade higher than masonry mortar for joint filling and leveling. \r\n\r\n6.3. 1.5 Repair the decorative surface with wall materials of the same specification and size. \r\n\r\n6.3.2 Masonry is brittle and alkaline, and the local structure of masonry is destroyed by digging holes. \r\n\r\n6.3.2. 1 First, gently dig out the bricks or damaged parts in caustic soda, and clean up the floating ash and mud. \r\n\r\n6.3.2.2 Fully spray water to wet the damaged surface. \r\n\r\n6.3.2.3 Use cement mortar and bricks with higher strength grade than the original masonry (note that the bricks used should be fully wetted first). \r\n\r\n6.3.3 The outdoor decorative surface of the wall is damaged \r\n\r\n6.3.3. 1 Chisel off the damaged surface and its surrounding loose layers together. \r\n\r\n6.3.3.2 Clean the floating lime soil with a wire brush. \r\n\r\n6.3.3.3 Fully spray water to wet the damaged surface. \r\n\r\n6.3.3.4 Brush plain cement slurry evenly. \r\n\r\n6.3.3.5 Fill it with waterproof cement mortar of 1:3, and then repair the facing. \r\n\r\n6.3.4 interior decoration is damaged \r\n\r\n6.3.4. 1 6.3.3.3 6.3.3—6.3.3.4 \ r \ n \ r \ n6. N 6. 3. 5. 6. 5. 1 If the frame joints of the external decoration are not treated twice, which causes water seepage, the joints should be cleaned first, and then the windowsill should be \r\n\r\n6.3.5.2 For water seepage, the windowsill should be removed and rebuilt, and the drainage slope should be maintained inside and outside. A circular concave joint of about 1cm should be left outside the window bottom and filled with cement mortar. \r\n\r\n6.3.5.3 Use "one cloth and four glues" to spray or brush the grout at the seepage part of the external wall. The concrete method is as follows: firstly, a layer of glass fiber grid cloth and four channels of chloroprene rubber are painted on the seepage part of the external wall, and then the surface layer of 1:0.5 cement mortar is sprayed mechanically (or painted manually). \r\n\r\n6.3.5.4 When the water seepage area of the external wall is large, remove the facing first, and then apply 1-2 glue waterproof coating. When the last glue is wet, smooth it with cement mortar, and then repair the facing. \r\n\r\n6.3.5.5 If there is water seepage at the joint between the wall and the slab, precast neoprene cement can be used for caulking, and then the slab joints are dug, and then the slab joints are cleaned, and the slab joints and slab joints are heated with a blowtorch, and caulking is performed while heating, and finally caulking is performed with cement mortar. \r\n\r\n6.3.5.6 Indoor repair with neoprene waterproof glue, remove the inner decorative layer whose water seepage is 10- 15 cm wider than the periphery of the water seepage, clean up the wall and cracks, caulk with neoprene and cement mortar, then paint the base with cement mortar, and paint it for 2-05 cm on the base. \r\n\r\n6.4 Ceiling \ r \ n \ r \ nRefer to the maintenance procedure of "Ceiling plastering layer (veneer) falling off" in Indoor Maintenance Regulations for maintenance. \r\n\r\n6.5 stairwell \r\n\r\n6.5. 1 step defect \r\n\r\ n6.5. 1 chisel the loose part around the defect to a solid layer \ n6.5./kloc- R\n6.5.2. 1 If it is a concrete or block railing, please refer to the corresponding procedures in 6.2 and 6.3; If it is made of wood or metal, the maintenance procedure is as follows: \r\n\r\na) If it cannot be repaired, it should be replaced with new parts in time. \r\n\r\nb) Make the railing, ladder board and handrail firmly connected. \r\n\r\nc) Repair the railing (pole) facing. \r\n\r\n6.5.3 handrail \r\n\r\n6.5.3. 1 If it cannot be repaired, it shall be replaced with new accessories in time. \r\n\r\n6.5.3.2 Make it firmly connected with the railing. \r\n\r\n6.5.3.3 Repair decorative surfaces (such as paint and latex paint, etc.). ) \r\n\r\n6.6 Doors and Windows \ r \ n \ r \ nPlease refer to the "Doors and Windows" maintenance procedure in the indoor maintenance procedures. \r\n\r\n6.7 lightning protection facilities \r\n\r\n6.7. 1 rust \ r \ n \ r \ n6.7. 1 rust removal with sandpaper \ r \ n \ n. \r\n\r\n6.7. 1.3 If the corrosion is particularly serious, it shall be partially replaced and connected by electric welding. At the same time, the welded joints are treated and painted with antirust paint and silver powder paint. \r\n\r\n6.7.2 The disconnected connection part \r\n\r\n6.7.2. 1 was derusted and cleaned, and welded firmly. \r\n\r\n6.7.2.2 Apply two coats of antirust paint and one coat of silver powder paint. \r\n\r\n6.8 Roof insulation layer and waterproof layer \r\n\r\n6.8. 1 insulation layer is damaged \ r \ n \ r \ nReplace it in time and caulk it with 1:3 cement mortar \ r \ n \ r The plugging method is shown in the figure. \r\n\r\n6.8.2.2 In case of leakage due to vertical and horizontal immersion, three layers of dry linoleum can be filled at the immersion place and polyurethane can be used for joint filling. \r\n\r\n6.8.2.3 If the pipeline on the roof leaks, clean the periphery of the pipeline first, and then fill the joint with sealing materials, such as plastic ointment, neoprene, polyurethane and PVC cement. \r\n\r\n6.8.2.4 When the gutter leaks, the dripping place can be filled with sealing material, and the leaking place at the bottom of the gutter can be repaired with two cloths of tetrachloroprene rubber waterproof layer, or the leaking place can be filled with mastic or ointment. \r\n\r\n6.9 roof pool (box) \r\n\r\n6.9. 1 leakage \ r \ n \ r \ n6.9. 1 put the pool (box) four times first. \r\n\r\n6.9. 1.2 is used as a four-glue waterproof layer (or other waterproof layers), coated with cement waterproof layer, and then 1:2 cement mortar is used as a protective layer. \r\n\r\n6.9.2 The inspection cover of water tank (box) is defective \r\n\r\n6.9.2. 1 should be repaired and locked immediately. \r\n\r\n6.9.2.2 Apply two layers of antirust paint and check it regularly. \r\n\r\n6. 10 basement plugging \ r \ n \ r \ nThe basement plugging is difficult, so a professional waterproof company is entrusted.