(China Construction Waterproofing Materials Industry Association, Beijing 100831) The main technical features of the Technical Regulations for Waterproof Construction, it is considered that the procedure has a good advanced and practical nature.

Waterproofing in kitchens and toilets involves thousands of households, which is one of the important issues related to the quality of residential construction and the people’s livelihood. A few years ago, statistics from authoritative organizations showed that when the leakage of houses was severe, the leakage rate exceeded 30%, and leakage in the kitchen and toilets bore the brunt. The leakage of water upstairs and the downstairs damage caused a discord in the neighborhood and directly affected the harmony of society. Therefore, although the kitchen and toilet world is small, the water is big.

Recently, it was edited by the Beijing Urban Construction Technology Promotion Association, in conjunction with Beijing Jintang Construction Waterproof Technology Development Co., Ltd., and several other companies, which completed the Beijing Municipal Standard DBJ01*105*2006 “Technical Regulations for Waterproofing between Kitchen and Toilet Room (hereinafter referred to as “the Regulations”) has been issued by the Beijing Municipal Construction Commission in April 2006, and has been officially implemented since May 1. This is a specialized local code specifically for the waterproof construction of kitchens and toilets, together with two other Beijing local standards, Technical Specifications for Roofing Waterproofing and Technical Regulations for Waterproofing Basements, to form a building waterproofing project. The regional and supporting technical regulations and systems in the field will play a leading role in the country in promoting the progress of local waterproofing technology, ensuring the quality of waterproofing projects, and focusing on the promotion of new materials, new processes, and new technologies. The "Procedures" is based on the original "Beijing Recommended Practice for Waterproofing in Toilets and Bathing Rooms" (91TJ1), combining the current practice of waterproof engineering and the development and application of waterproof technology in Beijing in recent years, and optimizes the application of technological achievements in recent years. Recommended practice "is more advanced and practical than.

The determination method of the elastic recovery rate test including the failure factor of the test specimen was added to the determination.

3.5 Cancel the quality grades in signs, packaging, transportation and storage signs, increase shelf life, use instructions and precautions; change net weight to net content.

Added the contents of the box mark.

The contents of the storage conditions were increased, and the storage temperature was adjusted to 547*C to be consistent with other sealant standards.

Vice Chairman of Waterproof Material Industry Association, Deputy Director of National Standardization Technical Committee for Lightweight and Decorative Building Materials. Contact Address: 450002 Zhengzhou City, Henan Province, China Red 2006.9 China Building Waterproof Table 1 Waterproof grades and fortification requirements for kitchens and toilets Waterproof grade I: Important industrial and civil construction grades: General industrial and civil buildings Waterproof materials should be selected synthetic high Molecular Waterproof Coatings, Polymer Cement Waterproof Coatings (Type I), Infiltrating Waterproof Coatings (Including Composite Waterproofing), Polyethylene Polypropylene Coil and Polymer Cement Bonding Composite Waterproofing Polymer Cement Waterproof Coatings (Type), etc. Waterproof Layers Construct a flexible waterproof layer or use a rigid flexible water-repellent layer single-layer flexible (or rigid) waterproof layer, or local rigid-flex composite waterproof treatment fortification requirements one or two fortification a fortification waterproof layer thickness / mm synthetic polymer waterproof coating a 1.5, Two more than 2.0 1.6 polymer cement waterproof coating 1.8, two 2.2 soft waterproof material composite waterproof 1.5 (0.5 +1.0), two 2.0 cement-based permeability crystalline waterproof material 0.8, two 1.20.8 interface penetration Waterproof liquid and flexible waterproof material waterproof liquid 0.3kgm2, second coating 0.8 waterproof liquid 0.3kg/m2 polyethylene polypropylene membrane and waterproof adhesive compound Waterproof 1.9 (coil 0.6, binder 1.3), second 3.6 (0.5 per web, 1.3 binder) 1.8 Note: Grade I waterproof layer can be used for grade, but grade waterproof layer can not be used for I level.

The water project provides new technical evidence, and it also provides a good "prescription" for the leakage treatment and repair construction of the people's kitchens and toilets. Therefore, the personnel engaged in waterproof engineering design, construction, and supervision all need to understand, study, and implement the "Procedure". Here, the author focuses on the main technical features of the procedure, talks about learning and experiences, and communicates with everyone.

1 Take full account of the waterproof features of kitchens, toilets and baths. Compared to waterproofing of roofs and toilets in the kitchens and toilets, there are obvious features: the common kitchens and toilets are slightly larger, but the kitchens and toilets of ordinary houses. Bathroom area is small; there are many pipes (water, hot and cold water, heating pipes, etc.), flat corners connect many corners, sanitary facilities (such as buckets, urinals, wash basins, showers or tubs), drainage drains Many of these facilities are concentrated in a separate space. They are more complicated. Because of the daily washing and bathing, the rooms often contain water and the environment is special. The water-repellent construction work surface is small, time-consuming, labor-intensive, and expensive. It must be carefully handled. Waterproof layer should be waterproof as a whole, preferably without seams.

At the same time, the above-mentioned features of the waterproofing work in the kitchen and the bathroom were fully taken into consideration, and a practical and practical waterproofing method was established between the kitchen and the toilet.

2 Strict waterproof design principles Waterproof design must follow the design principles of “anti-discharge combination, reasonable material selection, advanced technology, quality assurance, and compliance with environmental protection requirements”. For example, in terms of “reasonable material selection” and “environment-friendly” requirements, in previous years there were toilets and baths under the condition of poor ventilation, and still used a two-component polyurethane coating with a solvent (excessive dilution of toluene) as the waterproof layer. As a result of many incidents of poisoning by construction workers, the Beijing Municipal Construction Committee has made regulations to restrict the use of solvent-based two-component polyurethanes. The "Procedure" requires the promotion of the use of non-polluting and pollution-free one-component polyurethane coatings in order to make operations more secure.

3 Reasonable waterproof grades and fortification requirements In the past, the waterproof design of the kitchen and toilets had never been separated from the waterproof grade and fortification, and the “Regulations” made it clear that important building kitchens and toilets should be rated as Class I waterproof fortification. It is generally rated as grade; and according to different grades and fortification requirements, it puts forward explicit requirements for material selection, structure level and thickness of waterproof layer, and it is strictly enforced as a mandatory clause (see Table 1).

The fortification requirements highlighted in Table 1 are very important. One or two waterproof fortifications should be determined according to the importance of the buildings in the kitchen and toilets. This mandatory provision stipulates a reasonable design basis for the quality assurance of waterproofing works in kitchens and toilets.

4 Make mandatory provisions on the drainage slope, the required groundwater drain slope should be 2%, the drainage slope should be 5% within 50mm from the edge of the drain; the large public toilets should be partitioned between baths, and each partition should have a Floor drain, drainage slope within the area of ​​2%, the slope of a straight line length of not more than 3m. Only the drainage slope in place, the kitchen, toilet room to achieve drainage effect, no accumulation of water in order to eliminate hidden leaks.

5 Waterproof construction mainly for coating film, taking into account the waterproof construction between other construction processes. The selection of materials should be based on the principles of no harm to human health, compliance with environmental protection requirements, and safe construction. It is advisable to use flexible and waterproof construction membranes on the operation. Practices can also use polyethylene polypropylene waterproof membrane and supporting adhesive compound waterproof and other practices. Throughout the "Regulations", its advocacy materials and methods are the following categories: waterproof coating film construction, including one-component polyurethane waterproof coating (scraping) construction, polymer cement waterproof coating (brushing) construction, polymer emulsion (Acrylic) waterproof coating (brushing) construction and modified polyurea waterproof coating (scraper) construction.

Rigid and flexible composite waterproof coating construction, including inorganic anti-leakage sealing material (scraper coating) and one-component polyurethane waterproof coating compound construction (ie, rigid waterproof layer, flexible waterproof surface layer), inorganic anti-leakage sealing material and polymer Composite waterproof cement coating construction.

Permeable waterproof material construction, including the direct application of cement-based penetrating crystalline waterproofing material on the concrete base surface, as well as the composite base surface waterproofing liquid penetrating the penetration of the interface and the surface of the flexible waterproof coating waterproof composite construction.

Polypropylene waterproofing membrane and polymer cement bonding material 1.9mm above the waterproof layer composite construction method.

A total of eight waterproof construction methods in the above four categories are reflected in the “Regulations”, embodying mature materials and new materials, traditional construction methods and new construction methods, and the main push of composite construction methods, the importance of waterproof quality, taking into account the construction period and other technical ideas.

6 Highlights, operability and strong arts requirements, the construction process from the construction preparation, preparation requirements, process flow, operating points, waterproof detail handling, product protection and safety precautions, quality inspection, etc. The points are clear, and they are operability.

In addition, in order to facilitate technical management and technical and operational personnel to master the performance indicators of waterproof materials, understand the material composition, master the criteria for acceptance materials, and re-examination requirements for on-site material sampling, the “Appendix” clearly stipulates the “Appendix” at the end. .

7 Conclusion The Beijing landmark “waterproof construction technology specification for kitchen and toilet room” has been reviewed by experts and it is agreed that: “Regulations” are rich in content, advanced and practical, and can regulate and guide the design of waterproofing projects between kitchens and toilets. Construction, and provide the basis for quality acceptance.

division. Contact Address: No. 11, Sanlihe Road, Beijing, 100831, China, Tel: 01 to 68324403. □ Standard Information The Standard of China Construction Engineering Standards Association, Technical Specification for PVC Polyimide Sheets for Swimming Pools was held in Beijing on July 28, 2006. (draft review) expert review meeting. The meeting was presided over by Mr. Fu Shiyao, Chairman of the Waterproof Committee of the China Engineering Construction Standardization Association. The Executive Vice Chairman of the China Engineering Construction Standardization Association Shao Zhuomin attended the meeting and gave important instructions on the principle of standard review. The meeting formed an expert review committee. After the participating experts heard the presentation of the preparation process, main content and basis of the “draft review draft” by the team, the “regulations* (draft for manuscript review)” was carried out chapter by chapter, section by section and article by article. Careful review and unanimous opinion: The procedure, format and terminology of the procedure are in line with the standard requirements; the procedures are advanced, scientific, and operational; and the procedures for the design, construction, and acceptance of the PVC polyvinyl chloride diaphragm application for swimming pools are made Specific regulations can guide the design, construction, and acceptance of polyvinyl chloride diaphragms for swimming pools.

The expert review committee believes that the procedure is comprehensive, specific and advanced, reaching the domestic advanced level and agrees to pass the review. The expert review committee asked the preparation team to further revise and improve the procedures based on the review opinions, form a draft for approval, and publish and implement the approval after being approved by the competent department. (Extracted from China Waterproof Technology Network) 2006.9 China Construction Waterproofing

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