Hui Jing waterproof engineering company to undertake professional: expansion joint sealing and other waterproof plugging. Daily life, general construction company to solve the problem is to use a waterproof joints flax, pouring asphalt ointment treatment, but because these materials itself waterproof aging, shrinkage, cracking, foundation settlement and other factors are not the same variety of reasons the leakage problem, a serious impact on the daily use of the building. First, the causes of the leakage generated: 1, the root cause: The basic process is not fully considered in place, resulting sedimentation coefficient different joints on both sides of the side which appears high, while low situation. 2, the design reasons: expansion joints waterproof design is too simple, simply can not meet the requirements telescopic. 3, sealing material selection: sealing materials generally are common sealant, anti-aging, scalable performance is low, thus the aging waterproof layer cracking. Molecular grouting waterproof plugging nanoparticles new technology is suitable for the following types of projects: 1. culvert, settlement, expansion joints and Deformation, back strip, construction joints, cracks off the bottom of sewage leaking water waterproof plugging grouting leak repair. 2. The underground base construction, underground engineering, civil air defense projects, bank vault, floor and other concrete structures pond water leakage plugging construction. 3. The mine access, borehole, caisson, dams, bridges, roofing, tunnel, loop waterways, culvert, drainage works take leakage plugging maintenance. The coal mine coal handling system, threading pipe, casing, coal handling bridge, drilling, well Wall, tailings leak sealing cracks in concrete culvert. 5. The cable trench pit, cable tunnels, cable wells, elevator shafts, siphon wells, valve shafts, foundation pit engineering leak water, with water plugging operations construction. 6. basements, underground garage, parking, underground passages, heat pipes, excavation, shafts, and other underground works plugging leaks repair construction. 7. The concrete structure, cooling tower, cooling tower, chimney fouling platform, through the pump room, pipelines, sewage treatment pond project leakage water trap maintenance. 8. highway tunnel, tunnel, cross-river tunnel, an artificial lake, water tunnels, the railway tunnel leak plugging cracks in mass concrete. 9. hydropower projects dock cofferdam, lock works, pumping stations, hydropower stations, reservoirs, dam grouting cracks reinforcement concrete floor expansion joint sealing treatment process 1, the primary requirements for expansion joints on each side 50cm place separated by cutting machine to cut (to prevent damage when hit chisel surrounding tiles), and then clear the floor tiles and the mortar joints between the Department and the layer cut until the base layer (concrete floor surface) to clean up. 2, laying floor tiles first before laying tile 2.1 on the water to soak for an hour, to prevent it from cracking, the process of laying almost the same type and size of tiles affixed in the same area. Be sure to clean up ground during the construction of a clean 2.2, if no serious bumpy ground, the line will be able to begin construction of the bomb. 2.3 Pull on the diagonal plane construction, hire center construction plane, then in accordance with the design of graphics, with cement mortar (cement and sand ratio of 1: 2) to make the tile adhesive slowly from the center to the edges open, hand soft reduction or tapped with a rubber hammer so that the ground cement. 2.4 In the process of laying between the tiles and the ground must use fully tamped cement, can not have gaps. Otherwise, other cement dries, people stepped on it easily broken. Keywords: joints plugging, plugging underground garage, cable channel plugging, plugging the tunnel