I. Overview of the Project:

In view of the importance of toilet waterproofing in this project, our company puts forward targeted problems and draws up this scheme for review in combination with our many years of construction experience.

Second, the compilation basis:

1, according to Code for Quality Acceptance of Roofing Waterproofing Works (GB50207-2002) of People's Republic of China (PRC).

2. Technical Code for Building Waterproofing Engineering in Guangdong Province (DBJ 15- 19-97).

3. Technical Specification for Waterproofing and Insulation of Guangzhou Tian Li Waterproofing and Insulation Engineering Co., Ltd. ..

Third, the construction preparation:

Prepare the "Construction Organization Design Plan" before the project construction.

(1) Material preparation shall be made according to the materials needed for construction, so as not to affect the construction period;

(2) The construction personnel shall be trained before the job and provided with technical disclosure;

③ Determine the quality objectives and inspection requirements.

(4) The quality of waterproof engineering shall be judged according to the grade above Grade II, and the engineering inspection shall be accepted according to national standards.

Four, the requirements of the construction base:

The quality of base surface is one of the keys to ensure waterproof engineering, which directly affects the waterproof quality.

1, basic requirements:

The base is the foundation of waterproof layer, and its quality is directly related to waterproof quality.

(1) smoothness: the smoothness of the base is the key to ensure the quality of the coating waterproof layer. If the surface of the base is uneven or locally convex, it is easy to break under the action of external force, which will affect the quality of its waterproof engineering. Surface quality: If the surface of the base is crisp, the strength is too low and the cracks are too large, it is easy to make the waterproof layer and the base not firmly bonded, which will often cause the waterproof layer to peel off from the base during use, which will become one of the main reasons for leakage. The base course shall be compacted and leveled, and there shall be no looseness, sanding and peeling.

(2) Moisture content: The moisture content at the grass-roots level has different effects on waterproofing of different types of coiled materials. Generally speaking, the grass roots are required to be dry, and the moisture content is less than 9%. Simple and suitable measurement method: lay the 1m2 coiled material flat and dry it on the leveling layer, let it stand for 3-4h, and then lift it for inspection. No watermark was found on the cover and the roll.

(3) The base should be firm: the waterproof base is a cement mortar leveling layer. The mixture ratio of cement mortar shall not be less than 1:3, and the cement grade shall not be less than 325; Controlling the mixture ratio of cement mortar is the key to improve the firmness of base and prevent sand formation.

If there is no leveling layer at the grass-roots level and a coiled material waterproof layer is directly laid on the concrete surface, it is necessary to check whether there are honeycombs, pits and holes on the concrete surface. If there is a similar situation, it should be repaired with latex cement mortar.

(4) The base is smooth, firm and clean, with no open water and no leakage; Cracks should be repaired and leveled, and leakage should be stopped. The corner of plane and elevation and the angle of yin and yang should be made into circular arc or obtuse angle.

Five, material preparation:

(1) main material: 9 1 1 polyurethane waterproof coating.

(2) Basic treatment agent: 88 1 waterproof coating.

(3) Material reserves shall be determined according to actual quantities.

(4) Properties of 911polyurethane waterproof coating:

Requirements for serial number items

1 solid content% ≥ 94

2. Drying time: H meter drying ≤ 4, not sticky.

Solid valve stem ≤ 12 without adhesion.

3 tensile strength, MPa, 20℃ ≥ 1.65

4 elongation at break, %, 20℃ ≥ 300

5 low temperature flexibility -30℃ bending without crack

6 impermeability pressure, no leakage at 0.3Mpa.

Time, 30 minutes

7 Bond strength MPa ≥ 1.2

Six, tool preparation:

1. Common tools: mixer, vacuum cleaner, cutter, wire brush, trowel, roller brush, measuring tool, platform scale, special rubber scraper, iron drum, small paint brush, magazine, etc. , and its supporting building facilities.

2. Fire prevention and depleted uranium prevention equipment.

Seven, construction conditions:

(1) Before the waterproof layer construction, all pipe fittings, sanitary equipment and floor drains must be installed firmly and the joints should be tight.

(2) Public toilets shall be painted with 9 1 1 polyurethane waterproof coating with a height of 2 m.

(3) The ground slope is generally 2% (unless the design has special requirements), and the floor drain is used for drainage.

(4) The cement mortar screed-coat shall be smooth and solid, free of pits, sand, shell, looseness and unevenness.

(5) Angle of Yin and Yang, pipe root should be painted as an arc with a radius of100-150 mm. ..

⑥ The base course should be clean and dry, and the moisture content should not be greater than 9% (except waterproof coating that can be cured on wet base course).

Adequate lighting should be prepared for bathrooms with poor natural light, and ventilation equipment should be added when ventilation is not good.

Eight, operating conditions:

(1) The basement shall be flat and clean, and there shall be no big holes, cracks, unevenness and sand.

(2) The pipeline shall be ground and calendered, and the casing of the pipeline shall be 20 ~ 30 mm above the ground. All fittings, sanitary equipment, floor drain and other equipment must be installed firmly before painting, with tight joints and smooth ends without looseness.

Nine, operation process:

(1) Cleaning the base: Clean the base of the existing construction site, and there shall be no attachments on the base, and the surface shall be smooth and firm.

(2) The floor thickness of waterproof coating is 2mm, and the wall thickness is1mm..

(3) After painting, the construction of the next working procedure shall be based on basic dryness and non-sticking. The coating should be as uniform as possible, without local deposition, and painted several times, so that there is no bubble between the coating and the base, and the bonding should be tight.

(4) Undercoat: mix 9 1 1 polyurethane waterproof coating evenly in proportion before use. During construction, scraper or brush can be used for operation. The second construction can only be carried out when the coating is cured to dry and non-sticky. Yin and Yang Angle, pipeline and other parts should be additional layer.

(5) coating the intermediate layer: coating the intermediate layer: the material ratio and coating method of coating the intermediate layer are the same as that of coating the lower layer.

(6) coating the surface layer; Its material ratio and operation method are the same as those of the coating intermediate layer.

(7) Pipe root: After sealing and caulking, additional waterproof layer should be made, and the pipe root should be cleaned. First, it should be made into a putty shape with liquid material: powder = 10: 15 ~ 20, and then embedded around the pipe root. Then the joint between the ground and the wall is reinforced with 9 1 1 polyurethane waterproof coating in the same way.

(8) Only the bottom layer, lower layer and surface layer shall be painted on the wall surface.

(9) The floor should be covered with cement mortar with a thickness of 20mm 1: 3, and the wall surface can be sprinkled with medium sand on the last coating waterproof layer, and ceramic tiles can be pasted directly.

X. construction technology:

Nine, operation process points:

1. Clean up the base: clean up sundries, floating ash, etc. Vacuum on a qualified base.

2. Brush the base treatment agent: mix the prepared primer waterproof coating evenly for later use. Before large-area painting, paint brush dipped in primer shall be used to evenly paint the internal corners, the root of wall-penetrating pipe and other parts, and long roller brush shall be used for large-area painting. When drawing vertically and horizontally, the thickness should be even, and you can't see the white background. Generally, the next working procedure can only be carried out after brushing for more than 3 hours.

3. Ingredients: After all the preparations before construction are completed, ingredients can be made, and the dosage of ingredients must be accurate. According to A:B= 1:2 (weight ratio), it can be used after being stirred for 2-3 minutes until it is completely uniform, and it can be used within 20-30 minutes. When batching, measuring tools should be used separately to prevent improper operation and local condensation of liquid materials.

4. Coating:

A. Scrape (brush) the evenly mixed paint on the surface of the base in an orderly and uniform manner, and the thickness shall be consistent. The first coating should be Bo Tu, and the second coating can be scraped (brushed) after curing for 6 hours (basically non-sticky). The coating direction of the second coating is perpendicular to the coating direction of the first coating.

B, coating construction sequence is to brush the water first, through the pipeline and the Angle of Yin and Yang, and then brush the big plane, from top to bottom. After the completion of the first coating, if there are some empty drums, air holes or foreign bodies such as sand and dust mixed in the coating that are not bonded, the second coating construction can be carried out only after the coating is repaired, and the coating is brushed twice, with a film thickness of1.5 mm.

C, corners, joints, deformation joints and other special parts must be carefully brushed to meet the requirements, and the coating thickness should be uniform and tightly sealed, and there should be no outcrop, bulging, shedding, cracking, warping and lax sealing.

Ten, detailed structure practice:

1, node construction

A, riser:

(1) After the riser is positioned, the cracks around the floor shall be blocked with waterproof mortar, and the cracks larger than 20mm shall be blocked with fine stone concrete.

(2) A groove with the size of 15mm× 15mm should be formed around the pipe root, and the groove around the pipe root should be cleaned.

(3) Squeeze the ointment into the groove, and scrape it tightly with a scraper to make it full, dense and free of air holes. In order to make the ointment firmly bond with the concrete around the pipe root mouth, polyurethane waterproof coating should be painted on both sides of the groove and around the pipe root mouth, and kraft paper or other gasket materials should be padded at the bottom of the groove.

(4) Within 200mm high of the outer wall of the pipeline, remove mortar and grease impurities, and scrape polyurethane waterproof coating as stipulated in the design. In addition, if the riser is a hot water pipe or a heating pipe, it is necessary to add a sleeve. At this time, steel casing can be added according to the actual size of the riser. The height of the casing is 20-40mm, and the joint is 2-5 mm. The upper joint is also sealed with ointment, and the casing is about 2-5 mm higher than the ground.

2, floor drain secondary drainage

(1) After the riser is positioned, the cracks around the floor shall be blocked with waterproof mortar, and the cracks larger than 20mm shall be blocked with fine stone concrete.

(2) Find a floor drain with a gradient of 2% for the bath cushion in the bathroom. The cushion thickness should be less than 30mm with cement mortar and more than 30mm with cement slag.

(3) Around the top of the floor drain,10m×15mm is sealed with ointment, and polyurethane waterproof coating is applied on it. Due to the slight shrinkage of concrete during solidification, the cast iron floor drain has a large bottom and a small bottom, and cracks are easy to occur at the contact between the outer surface and concrete. In order to prevent water seepage around the floor drain, it is best to improve the floor drain and add cast iron waterproof tray on the basis of in-situ leakage to improve the waterproof quality of the bathroom.

3. Toilet

(1) After the toilet riser is positioned, the gaps around the floor are sealed with UEA waterproof mortar. When the joint is greater than 20, C20 fine stone concrete shall be used to block and smooth it.

(2) The periphery of the riser interface is sealed with ointment; The size is 10mm× 10mm, and the waterproof layer is made on it to the top of the pipe.

(3) The joint between the water inlet at the rear of the toilet and the pipeline is sealed with asphalt hemp and cement mortar, and the outside is coated with polyurethane waterproof coating.

Eleven, quality acceptance requirements:

1, polyurethane waterproof coating has the factory certificate. The incoming materials meet the design requirements after sampling and reinspection, and can reach the relevant technical indicators.

2, polyurethane waterproof layer it is forbidden to have leakage phenomenon.

3, polyurethane waterproof layer at the grass-roots level should be solid, smooth, clean, no sand and loose phenomenon, Yin and Yang Angle should be round or obtuse.

4, polyurethane waterproof coating should be firmly bonded, closely combined, uniform thickness.

Twelve, construction matters needing attention:

1. If the viscosity of the coating is too high to be used, a small amount of xylene can be added for dilution to reduce the viscosity, but the addition amount should not be greater than 10% of the material A. ..

2, when the coating curing too fast, affect the construction, can add a small amount of phosphoric acid or benzene sulfonyl chloride, retarding effect, its addition shall not be greater than 0.5% of a material.

3, when the coating curing is too slow, affect the construction progress, can add a little dibutyltin dilaurate, to promote the solidification, but the amount shall not be greater than 0.3% of the material.

Polyurethane A and B are flammable and must be packed in iron drums. They should be sealed and not stored in the open air. Storehouses and construction sites where materials are stored must be well ventilated, and warehouses and construction sites without ventilation conditions must be equipped with mechanical ventilation (exhaust) equipment, otherwise polyurethane paint construction is not allowed.

5. Most building materials are flammable. Fireworks must be strictly prohibited in storage, batching and construction site, and corresponding fire-fighting equipment should be equipped.

6. After coating construction is completed, squeezing and trampling are not allowed before curing. After curing, it is not allowed to store construction machines and tools on the floor, let alone drag them on the floor, otherwise the waterproof layer will be seriously damaged.

7. Every time the construction is completed, the construction machines and tools must be carefully cleaned with xylene and other organic solvents in time for the next use.

8. When painting construction is carried out in an unventilated environment, there should be ventilation facilities, and the construction personnel should shorten the operation time.

Thirteen, the construction schedule:

1, cooperate with the progress of the general contractor for construction.

2, arranged by the general contractor to cooperate with the construction plan.

Fourteen, finished product protection:

1, the toilet is small, but it needs more jobs and interchanges. All kinds of construction sequence must be arranged reasonably, and it is forbidden to make holes to destroy the waterproof layer after the completion of the waterproof layer. If the waterproof layer is damaged due to improper arrangement, it should be repaired in time.

2, floor drain, toilet, squat pit and drain should be kept clear, there is no mortar and other construction waste blockage.

3, after the completion of each construction, must be timely and carefully clean up the construction machines and tools.

Fifteen, quality assurance measures:

1, before construction, fully understand the waterproof details in the construction drawing, the waterproof structure and technical requirements of the bathroom, and provide technical measures for the waterproof project of the bathroom.

2. Carry out the spirit of 95. 12. 14 National Building Waterproofing Conference, and establish a waterproof construction quality assurance system.

3. The waterproof materials used shall have the factory certificate, and shall be tested and certified by the testing organization to meet the design requirements.

4. The construction shall be carried out in strict accordance with the technical specification for building waterproof engineering in Guangdong Province DBJ 15- 19-97.

5. I, "Guangzhou Tian Li Waterproofing and Leakage Stopping Engineering Co., Ltd.", take full responsibility for the project quality, progress and technology.

Sixteen, fire control, safety and construction measures:

1, fire control measures: set up a fire control leading group, mainly based on the on-site project team, formulate the fire control scheme and inspection system of this project, regularly study all kinds of problems encountered in fire control work, set up fire prevention responsible persons at all levels, educate each construction worker on the site to seriously implement various fire safety management systems and implement the reward and punishment system. Problems and hidden dangers found in the inspection should be rectified within a time limit.

Adhere to the safety and fire inspection system to prevent accidents. (Attached: Drawing of Special Teams for Fire Fighting and Safety)

The combination of voluntary firefighters and regular firefighters on site ensures the smooth progress of safety, fire fighting and security work. Special inspections should be organized during the peak period of construction and during spring and summer.

2. Safety production measures: The project manager is the first person responsible for project safety production, and has the leadership responsibility for project production and safety. He firmly established the idea of "safety first, prevention first", established the responsibility system for safety production step by step, formed a strong safety production guarantee system and eliminated all unsafe factors. In addition to establishing and improving the responsibility system for on-site construction safety production and extensively carrying out safety awareness and discipline education, he also formulated corresponding specific measures according to the characteristics of this project. Specific measures are as follows:

(1) All personnel entering the site must wear safety helmets.

(2) Strictly implement safety operation procedures, make safety disclosure before construction, conduct safety education regularly during construction, and strengthen the safety awareness education of workers. Full-time safety supervisors shall be set up at the site to be fully responsible for safety production and civilized construction. The worker team leader is responsible for the safety production in the working area of the team, completes the inspection and handover work before and after the shift, and has the right to refuse the illegal command and operation instructions.

(3) sundries are not allowed to be stored near the limb and the mouth of the cave, and their temporary transportation must be supervised. Materials and tools for operation should be piled up smoothly, and tools should be put into tool bags at any time. It is forbidden to pile up and throw materials, tools and objects from a height. Strengthen the management of materials and tools to ensure civilized construction. Various materials, tools, semi-finished products, etc. Enter the site should be neatly stacked in the designated place. Construction operators should wash their feet after completing the work.

Seventeen, the main measures to ensure the time limit for a project target:

Project management department shall be set up on site to closely cooperate with the construction unit, centralize and unify the leadership of the construction team, coordinate the relationship between various units, be fully responsible for the progress, quality and safety of the project, and ensure the realization of the waterproof project progress organizationally.

1, strengthen the management of construction progress, prepare the overall project plan, take the overall project progress of Party A as the main line and the waterproof project progress as the control point. Ensure project quality, achieve excellence at one time, and avoid rework.

2. Hold regular project coordination meetings every week to solve the problems encountered in construction and production, and adjust the implementation progress according to the inspection and implementation.

Eighteen, civilized production management on the construction site:

In order to do a good job of civilized construction and management on site, and conscientiously implement the Interim Provisions on Strengthening the Management of Civilized Construction of Construction Projects, the project department must post the specified contents for everyone's attention and mutual supervision to do a good job of civilized construction on site. Materials and semi-finished products should be piled up on the construction site as planned and packed neatly.

Nineteen, public security management measures:

In the construction site, there are a large number of construction workers and production workers living in the construction site, so the safety problem is very important. To this end, we must conscientiously implement the spirit of the document of the Municipal Party Committee and the Municipal Government on carrying out the rectification of key areas of public security in the city, and take the following measures to solve the public security problems on the construction site in combination with the actual situation of our company:

1, hold a public security education meeting once a week, assign personnel to be responsible for public security management, implement various public security management measures to various construction teams, implement the * * * management system together with the civil security office, and clarify the scope of workers' activities.

2. The construction personnel who enter the construction site or live in the dormitory must wear the work license. No one without a work permit may stay in the dormitory or enter or leave the construction site.

3. It is forbidden for all members of the construction team to fight, and it is forbidden for all construction personnel to go beyond the prescribed scope of activities, which will affect the life of on-site management personnel.

4. Those who do not comply with the regulations on public security management on the construction site will be dismissed.

Twenty, construction technology management:

According to the management quality of engineering professional technicians and skilled workers, this project adopts a three-level technical management system of company → production department → construction team. The technical responsibility system of hierarchical management and the quality-centered technical management system under the unified leadership of the company's technical director.

1, construction organization design:

The weaving design for this project is written by professional technicians and approved by the project leader. The construction organization design of each sub-project shall be organized and implemented by professional construction technical cadres, and the technical director of the company shall be approved by various professionals according to the actual situation of the project.

2, the blue prints.the design construction:

This project construction should be attended by professional and technical personnel, and the blue prints.the design. Participants in the joint hearing include representatives of design units, Party A, supervision companies, company leaders, technical engineers, technicians, safety officers and team leaders. The results of joint review shall be summarized by the technical director of the project department and submitted to the design representative, the representative of Party A and the supervision company. After review and countersignature, the project part will be filed.

3, technical disclosure:

According to the characteristics of the roofing waterproof project undertaken by our company, the construction scheme, quality standards, safety measures and technical measures for tool operation are compiled, and comprehensive disclosure is made to the construction personnel and team. Relevant professionals should participate in the disclosure, and the procedures are as follows:

Each department organizes leading disclosure personnel to participate in the personnel.

Company managers, technicians, builders, safety officers and various professional and technical personnel.

Production team leader, technician, builder, project team leader, production technical backbone.

4, technical change management:

In the process of construction, Party A, design institute and supervision company put forward modification opinions, which were reported to the design on behalf of Party A and supervision company after the feasibility study was conducted by the technical department of the construction unit and approved by the technical director. The modification proposed by the construction unit shall be determined by the design, Party A and the supervision company through feasibility study. If there is no objection, it will be issued to the construction unit after signing for approval, and will be registered, filed, issued by the documenter, and organized for implementation. If the design unit has any objection to the contents of the change, it should consult with the construction unit and relevant departments to seek the best solution.

Twenty-one, safety measures:

To implement the policy of "safety first, prevention first", in the whole construction process, we must seriously abide by the construction safety work norms and safety management system, and strive to do a good job in safe production and civilized construction to prevent the occurrence of vicious accidents.

1, leading group for safety construction, work out safety construction network, establish safety network at all levels, and implement safety production responsibility system at all levels. Leaders at all levels of all departments and teams of the company should put safety work on the important agenda, carry out safety day activities once a week, and make safety disclosure before work every day. Safety and quality personnel and construction personnel should, according to their respective professional characteristics, take various forms to carry out safety construction publicity on the ground, adhere to three-level safety education, and strengthen inspection system and innovation.

2, the implementation of safety regulations:

(1) When entering the construction site, you must wear a safety helmet, and high heels and slippers are not allowed.

(2) The construction site and working hours are not allowed to joke and play.

(3) There must be enough fire-fighting equipment on the construction site, and the drugs should be checked and replaced regularly. The position is obviously fixed and shall not be used for other purposes at will.

④ From beginning to end, this project implements our company's consistent purpose: the quality policy of "meticulous construction, technological innovation, quality first, customer first" and the quality goal of "first-class management level, first-class quality and first-class construction project", and strives to create high-quality projects.