Water needle, also called grouting nozzle, in the home improvement industry, widely used in waterproof engineering, especially in the concrete pouring polyurethane and epoxy resin chemical slurry applications, application of high pressure chemical grouting plugging technology, major components are high pressure chemical grouting construction. It is the principle of continuous pressure generated by the filling machine, the chemical material gap internal solution into concrete, and the seam of the water completely crowding out, the gap completely filled, achieving the purpose of water stopping.
Advantage��
1 high pressure (generally up to 20Mpa) and stable and reliable, can make chemical slurry completely into the concrete structure crack deep inside, with good sealing effect.
2 grouting technology is mature, complete varieties, basically has realized the single product production, without on-site deployment, the quality is stable, can be used to open barrels. Slurry resistant to chemical corrosion, non-toxic, environmental protection, can be permanently waterproof.
3 construction technology is simple and easy to operate. The construction speed is quick, the sealing effect is immediate, once and for all. Workers labor intensity is small, the construction effect is 5-10 times of the traditional construction method, the traditional method can not be compared.
4 construction is not subject to season, weather restrictions, can be used for a variety of projects, including maintenance, repair works, drinking water projects. Construction comprehensive cost is low, and the economic benefit is remarkable.
Matters needing attention��
1 rubber pads: butter head rubber, rubber with special rubber material (under high pressure shock), crowded in the high pressure rubber head without deformation and damage caused the outflow of pharmacy.
2 butter head (rule out the traditional spiral way of consumption hours), compression of up to 10000PSI, four claw type fast joint provincial working hours, by the agent of the rapid expansion of rubber extrusion pressure, the four claws of the butter mouth tightly wrapped.
3 butter in the construction process, the pressure is too high and chemical grouting material corrosion, easy to damage, so in the construction process, it is found that the damage should be replaced in a timely manner, otherwise cause leakage.
4 at the end of construction, due to the cleaning machine, rubber oil head has a corrosive effect on the head, resulting in butter rubber is easy to damage, so in the next construction, should be promptly replaced.
Pre construction steps:
1 for cracks: for wet base, cleaning first water, to be completely clean, grassroots surface slightly dry, look for cracks with pencil or chalk mark along the cracks; for dry grass, cleaned up by the air pump or blower blowing dust on the surface.
2 Drilling: according to the thickness of the concrete structure, the distance of cracks about 150-350mm, along the crack direction on both sides of the cross drilling. The hole distance should be determined according to the actual situation, with two hole grouting grout in the cracks can interchange for the general principle, at the beginning of the hole distance should be 300mm; aperture size shall be determined according to the sealing needle size matching, using the 13mm bit non-standard. Hole and crack section should be 45 degree -60 degree cross, and cross in the middle of the bottom of the 1/3 range.
3: water needle needle buried water stop supporting parts, is grouted into the cracks within the connector tool, fastening applications laid, and ensure that the rubber portion of the needle hole in the wall and did not use before drying, otherwise easily caused by slipping in fastening.
4 / seepage reinforcement drilling, locking needle, medicine is poured into the material inside the cup, the cup will start the power switch, and tube residual detergent or extrusion lubricant, until the medicament ejected, and then insert the needle, the drug into the body wall, leakage, reinforcement.
