1、第三届中国防水技术与市场研讨会 2003 China Waterproofing Technology nearly 20 polymer sheet production lines including EPDM and PVC have been set up with a production capacity increase of 30 million m2. Besides, a roller cutting asphalt shingle line 第三届中国防水技术与市场研讨会 2003 China Waterproofing Technology a metal sheet
2、(lead-tin alloy) was successfully produced and has been applied on planted roofs.1.5 Basically, there is a sufficient supply of main raw materials. Most raw materials including reinforcing mats, PU, acrylic emulsion etc. can rely on domestic supply except APP, APAO and parts of EPDM.1.6 The manageme
3、nt of design and application techniques has been improved. Codes concerned with roofing and below-grade waterproofing design, material selection, application techniques have been issued; application qualifications of waterproofing contractors have been reviewed and re-registered, applicators are enc
4、ouraged to adopt quality guarantee period system.1.7 International exchanging and cooperation is enhanced. Many advanced new products, new technology and equipment have been imported from the developed countries. 8 American companies and companies from France, Switzerland and Belgium have entered in
5、to the waterproof material market in China playing an active role in promoting the waterproofing technology development.2. Major problems in the current waterproofing industry of China2.1 Low-grade and poor products dominate the market affecting the production and development of the new advanced wat
6、erproof materials.2.2 There are few types of modified asphalt sheet and polymer sheet, which makes it difficult to form product series.2.3 Products standards are made by multi-industry departments. The indexes of some standards are too low compared to foreign standards.2.4 Waterproof application tec
7、hnology system is badly accessorized for a lack of suppliers of spare parts, accessories and application equipment.2.5 A lot of small application teams and workers of low professional level pose a threat to projects, often causing leakage.2.6 Cost budget for waterproofing projects is too low and pri
8、cing is unreasonable, which has a negative effect on their long durability.3. Measure and policy suggestions3.1 The development goal and technology guideline for waterproof materials are: making major effort to develop SBS and APP modified asphalt sheets, actively promoting polymer sheets, properly
9、develop environment-friendly waterproof coatings, develop high-grade elastic sealants, and limiting or banning poor and backward products.3.2 Strengthen management, improve and rectify the market order第三届中国防水技术与市场研讨会 2003 China Waterproofing Technology & Market93.3 Encourage waterproofing manufactur
10、ers to improve their scale and professional level, increase product types thus sharpening their comprehensive competitive edge in the market.3.4 Check the standards of waterproof materials to speed up the step to reach foreign standards.3.5 Make technology progress through innovations, encourage res
11、earch and development of systematic waterproofing technology and put more effort to development of waterproofing application system.3.6 Improve waterproofing design, application quality and management and provide technique training for workers3.7 Strengthen quality inspection and supervision: on-sit
12、e waterproof materials must have product quality certificate and property testing report and must be retested through sampling according to requirements of design and related norms. Those Unqualified waterproofing materials are forbidden to use in projects.3.8 Determine a reasonable pricing on unit
13、area of different waterproofing projects and standardize bidding process.Brief Introduction to The SpokesmanLi Chenggang, Male, Born in 1932, College GraduatePosition: Professor of Architectural Scientific Research Institute of ChinaHe was sent to study in Architectural Science Institute of Former S
14、oviet Union majoring in waterproofing building technology in 1956. He has been engaged in research on waterproof building 第三届中国防水技术与市场研讨会 2003 China Waterproofing Technology & Market10materials for a long time. With many awards for his research achievements, he has made important contributions to th
15、e development of waterproof building technology of China. He hosted recovering the roof of the Peoples Grand Conference Hall of Beijing, waterproofing design of Grain Depot of the Central Government etc. and participated in the revising and compiling of Codes of Waterproofing Technique on Below-grade Projects.
