High-pressure grouting waterproofing and leakage plugging construction program process

basement garage ramp garage low span and 1 # building intersection due to winter, resulting in waterproof layer damage leakage, basement garage space low span of water storage, due to the structure of the surrounding water level is high, the force caused by the underground space for a long time storage of water, one is: caused by the basement floor large-scale water seepage ; Two: make cement concrete immersed in water for a long time, make concrete deteriorate early. So the need for high pressure grouting waterproofing treatment of water leakage.

Second, the construction of the main materials

1, Material Introduction

The appearance of the product for the light yellow to amber transparent liquid, which is made of strong polyurethane prepolymers and a variety of additives with a one-component high-pressure leakage plugging materials, a fast and efficient both leakage plugging and consolidation of polymer elastic materials for reinforcement. It can be used in various projects to block water seepage reinforcement

2, material characteristics

(1) The material has good hydrophilicity, can react with water, while generating CO2 gas, and against the water along the water channel penetration and diffusion, and the surrounding concrete, sand, soil, etc., rapid hardening to form an impermeable solidified layer, which has been widely used in sealing off the large pressure of the surge of water and stopping the flow of water and water in the foundation. Foundation in the flow of water and water infiltration.

(2) The material and the concrete and soil particles bonding force, can produce high-strength elastic cementation body, so it can fully adapt to the deformation of the foundation or other grass-roots level, so that it is not easy to find the cracking, collapse and get the reinforcement of the initial strength.

(3) in the structure containing water slurry will not be dispersed, in the process of its reaction, due to the diffusion of gas so that the effective solidification area rapidly increased, can be obtained than other types of chemical slurry much larger solidified body.

(4) According to the different needs of the project, the viscosity of the chemical irrigation liquid can be adjusted, for concrete projects, such as basements and other small cracks after grouting slurry can quickly penetrate into the formation of a solid bond, good seepage resistance, high strength of the solidified body.

(5) The curing speed of the slurry can be adjusted according to the construction needs.

(6) The construction of a single to the sub-grouting equipment, easy to clean, simple and easy process, the overall cost is low.

(7) The solidified body soaked in water is harmless, non-toxic and non-polluting.

3, material technical guidance

Item technical indicators

Appearance: light yellow ~ amber transparent liquid, density: g/m3 1.0 ~ 1.10.

Viscosity, 20 ℃, Mpa.s 100 ~ 400. gel time tens of seconds ~ tens of minutes

Bonding strength Mpa ?1.0. expansion rate, %? 300. Packed water 20 times

Third, construction operation process and points

1, construction process: determine the leakage point? Clean up the leakage surface? Drilling? Cleaning? Installation of grouting nozzle? High-pressure grouting foam? Observation? Fixing leaks? Remove grouting nozzles? Repair of slots? Inspection? Acceptance

2, construction points

(1) hit the seepage point, the seepage site, clean up.

(2) pre-buried grouting pipe with rapid plugging agent, the spacing should be based on the actual situation, generally about 1 meter.

(3) with an electric high-pressure grouting pump, water-soluble polyurethane plugging agent from the grouting tube into the concrete void joints, until the pressure is not into it (injection rate ?0.011/min) then close the valve, 24 hours after cutting (remove) grouting nozzle.

(4) in order to achieve long-term waterproofing purposes, and then in the construction of the surface of the waterproof layer of polyurethane coated.

(5) Grouting is completed in a timely manner with solvent cleaning equipment and tools.

(6) the construction site to maintain ventilation, pay attention to fire prevention, fire is strictly prohibited.

3, high-pressure grouting leakage plugging method

(1) this method is the use of high-pressure grouting machine generated by the enormous pressure, the material will be sent to the middle part of the gap wall, so that the middle part of the material as the center of the diffusion of materials to the surrounding area, the material and the rapid reaction of the hardening of the water, filling the gap to achieve the reinforcement of foundations, leakage prevention of seepage ` effect.

(2) This method of high-pressure grouting machine, filling high pressure, high flow, can quickly stop the water, indeed, effective water plugging method.

(3) This method of filling point from the center of the structure to start filling, especially for the thickness of more than 40cm concrete wall, the use of this method of plugging is fast and effective.

Fourth, work in the notes

1, construction notes

(1) grouting, grouting pipe tip buried in a reasonable, closely watching the pressure to prevent the burst pipe.

(2) The operator should wear glasses, masks, gloves and other protective equipment to prevent the slurry splash in the eyes.

2, the chemical grouting material storage precautions:

(1) chemical grouting material should be sealed and stored in a cold dark library, and have a person to keep, the custodian should be familiar with the nature of the material.

(2) Containers with materials should be clearly labeled and need to be categorized for storage.

(3) The place where the chemical grouting materials are stored should be strictly prohibited fire and smoke.

3, chemical grouting staff should pay attention to the following matters:

(1) staff should wear gas masks, rubber gloves, and wear boots and acid-resistant overalls.

(2) In the work of fatigue, feet blistering, numbness of the toes, dizziness and other sensations should be immediately detached from the scene, to the fresh air of the place of quiet rest.

(3) In the event that the slurry or powder enters the eyes or touches the skin, it should be quickly rinsed with a large amount of water, and if there is any pain, it should be immediately medically treated.

(4) Wash your hands immediately before eating and take a bath after work.

(5) Care should be taken not to let the slurry flow into the drains and rivers, so as not to pollute the water quality.

Fifth, quality assurance measures

1, strictly good quality of materials, the use of chemical grouting materials, with product certification, instructions and technical reports, by the site sampling and retesting before construction, never use shoddy products.

2, strict operating procedures and technical specifications, construction without cutting corners.

3, adhere to the inspection and acceptance system, adhere to self-inspection, mutual inspection and special inspection.

Six, safety measures

1, the project uses grouting and plugging agent and auxiliary materials are flammable, the construction site and the library is strictly prohibited smoking, and have a sufficient number of fire-fighting equipment.

2, into the construction site of all personnel with helmets.

3, into the construction site before the construction of all construction personnel for safety education, so that everyone speaks of safety, everyone to ensure safety, will be institutionalized, standardized, normative safety work.

Seven, civilized construction management

(a) team management

1, construction personnel in the construction area activities, is strictly prohibited to enter the non-construction area.

2, all construction personnel uniform uniforms, queuing in and out of the construction site.

3, construction personnel for pre-job training, to comply with the relevant provisions of the Party.

(B) construction site management

1, flammable products and other products should be stored separately.

2, materials are stacked neatly.

3, good site management, timely removal of waste.