Main purpose:
Aea expansion agent can be used for all concrete works and cement products requiring crack resistance, seepage prevention, joint, filling. Mainly used for:
1。 underground buildings such as subway, underground parking lot, underground warehouse, tunnel, mine, civil air defense project, underground sidewalk, etc.
2. Build pools, swimming pools, water towers, storage tanks, large containers, granaries and oil tanks.
3. Self waterproof rigid roof, mortar impervious layer and mortar damp proof layer.
4. Lining protective mortar for iron pipes and steel pipes.
5. Cement products, manufacture of self stressing, prestressed and steel sheathed prestressed concrete, water pipe concrete and reinforced concrete, drainage pipe floor column, beam column, waterproof roof panel, etc.
6. Important buildings with good crack resistance and perfect appearance. Such as sports stands, urban sculptures, museums, hotels, etc.
7. Expressway pavement, bridge concrete pavement and culvert.
8. Build high strength, high impermeability shaft, and fill concrete in the dam backfill tank.
Usage method:
1. The mixing amount is 6~10% of the cement weight, and the mixing amount shall be tested according to the engineering requirements before use.
2. The mix proportion design of aea concrete is the same as that of ordinary concrete. However, the low cement content shall be ≥ 300kg/m3. Outside hydraulic and marine mass concrete.
3. Refer to gb50119-2003 technical code for application of concrete admixtures for the use method. The mixing time shall be longer than that of ordinary concrete for more than 30 seconds with a forced mixer, and longer than that with a self dropping mixer for more than 1 minute. The mixing time shall be uniform before discharging.

Aea concrete expansion agent is one of the anti crack and anti-seepage concrete expansion agents in china. It can be used in five major cements to make shrinkage compensating concrete. It can prevent or greatly reduce concrete cracking and improve compactness and impermeability. It is made by grinding specially made aluminate clinker produced in rotary kiln, gypsum and expansion stabilizer together. The product is grayish white or pink powder, with stable and reliable quality. Its performance is mainly characterized by low dosage, high expansion rate, low alkali content, small drop loss and high strength.

Xi'an tongcheng construction technology co., ltd. Was established in 2008 with a registered capital of rmb 10.11 million. The company is an economic entity with independent operation, independent accounting and independent legal personality, and is also the leading organization and secretariat unit of shaanxi provincial technical committee for standardization of building materials (sx/tc61009), mainly engaged in the research and development, production, operation and service of concrete admixtures and related building materials products in one comprehensive production enterprise. At the same time, the company is a national-level high-tech enterprise, the director unit of china concrete and cement products association's admixture application technology branch, the vice chairman unit of china bulk cement promotion and development association's admixture industry development committee, the director unit of shaanxi quality certification association, the member unit of china concrete and cement products association's concrete engineering quality and standardization branch, and the member unit of china building materials federation's admixture branch. The company has passed iso 9001:2015 quality management system certification, iso 14001:2015 environmental management system, and iso 45001:2018 occupational health and safety management system. The company has many professional r&d staff with doctoral and master degrees, dozens of senior engineers, engineers and senior professional technical consultants, and is equipped with professional laboratories for chemical synthesis, cementitious materials, aggregates, mechanical properties, durability, concrete and concrete admixtures. In addition to its own professional technical team, the company has also obtained long-term cooperation with several building materials research units and famous concrete admixture experts, which provides reliable technical support and guarantee for the sustainable development of the enterprise. In order to solve customers' questions in time, we have opened online consultation and online technical support services. The company pays attention to technical improvement and equipment renewal, and has advanced production and testing equipment, realizing the modernization and intelligence of production. In the field of concrete admixture technology, we have obtained many technical patents and organized professional and technical personnel to participate in many international, national, industry, local and group standards. In order to ensure the stable production supply, the company has built xi'an tongcheng construction technology co. The company is an economic entity with independent operation, independent accounting and independent legal personality, and is also the leading organization and secretariat of shaanxi provincial technical committee for standardization of building materials (sx/tc61009), which is mainly engaged in the research and development, production, operation and service of concrete admixtures and related building material products. At the same time, the company is a national-level high-tech enterprise, the director unit of china concrete and cement products association's admixture application technology branch, the vice chairman unit of china bulk cement promotion and development association's admixture industry development committee, the director unit of shaanxi quality certification association, the member unit of china concrete and cement products association's concrete engineering quality and standardization branch, and the member unit of china building materials federation's admixture branch. The company has passed iso 9001:2015 quality management system certification, iso 14001:2015 environmental management system, and iso 45001:2018 occupational health and safety management system. The company has many professional r&d staff with doctoral and master degrees, dozens of senior engineers, engineers and senior professional technical consultants, and is equipped with professional laboratories for chemical synthesis, cementitious materials, aggregates, mechanical properties, durability, concrete and concrete admixtures. In addition to its own professional technical team, the company has also obtained long-term cooperation with several building materials research units and famous concrete admixture experts, which provides reliable technical support and guarantee for the sustainable development of the enterprise. In order to solve customers' questions in time, we have opened online consultation and online technical support services. The company pays attention to technical improvement and equipment renewal, and has advanced production and testing equipment, realizing the modernization and intelligence of production. In the field of concrete admixture technology, we have obtained many technical patents and organized professional and technical personnel to participate in many international, national, industry, local and group standa.

Xue Xiaoling

 tongchengxian_000@126.com&  435779065@qq.com

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