Recently, in the guidelines for the quality management of waterproofing technology of assembled monolithic concrete buildings in Shanghai (HJA [2020] No. 20) issued and implemented by Shanghai Municipal Commission of housing and urban rural development, the technical specification for the application of assembled building sealant (T / CECS 655-2019) issued by China Engineering Construction Standardization Association was officially cited. According to the guidelines, the compatibility, durability and pollution performance test of the joint waterproof sealant materials on the construction site will be carried out in accordance with the regulations.
In recent years, China's prefabricated buildings have been developed on a large scale. As the first line of defense for the waterproof system of prefabricated buildings, sealant is very important to ensure the waterproof sealing effect and architectural beauty. The standard of China Engineering Construction Standardization Association Technical Specification for application of prefabricated building sealant (hereinafter referred to as the specification) was prepared by China Academy of Building Sciences Co., Ltd. and China Academy of building standard design and Research Co., Ltd. together with relevant units, approved and issued on December 26, 2019, and implemented on February 1, 2020. The specification is mainly applicable to the selection, design, construction, acceptance and maintenance of sealant for indirect joints of concrete components and concrete components, concrete components and metal components, concrete components and other cement-based material components in prefabricated buildings. The preparation of the regulations is based on the research results of the "13th five year plan" national key research and development project "research and demonstration of key technologies for efficient construction of prefabricated concrete industrial buildings", which fills the gap in the application of technical standards in the field of sealant in China.
The guidelines for the quality management of waterproofing technology of assembled monolithic concrete buildings in Shanghai (hereinafter referred to as the guidelines) was issued on January 8, 2020 and implemented on March 1, 2020. The guideline aims to strengthen the quality management of water-proof technology of assembled monolithic concrete buildings in Shanghai, standardize the requirements of design, construction and acceptance, further improve the overall level of water-proof quality of assembled monolithic concrete buildings, and protect the interests of the people. The guideline requires Shanghai municipal and district construction administrative departments and supervision organizations to strengthen the supervision of the waterproof quality technology of assembled monolithic concrete buildings, and record the information of illegal behaviors of relevant units and individuals into the good faith in case of fraud or reduction of project quality, or unqualified construction projects, construction materials, construction components and equipment according to the qualified acceptance According to the regulations, credit archives shall be subject to scoring, yellow card warning, suspension of professional qualification, restriction of employment and undertaking business in this city, and fines.
China Engineering Construction Standardization Association (CECs) is the most influential professional social organization of Engineering Construction Standardization in China. At present, China Association for engineering construction standardization has issued more than 800 CECS standards and more than 2000 CECS standards under preparation, and has undertaken the transformation of group standards of recommended standards of major countries and industries in the field of residential construction. This time, the contents of CECs regulations were cited by the documents issued by the local government industry competent departments, creating a new situation in the implementation and application of Chinese group standards. With the promotion of CECs and the joint efforts of the whole industry, engineering construction group standards will play a more important role and contribute to the development of China's engineering construction.
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