我国混凝土外加剂的发展及存在问题_覃维祖.pdf

2009 4 　　　 38 　4 CONSTRUCTION TECHNOLOGY 　　　　7 我国混凝土外加剂的发展及存在问题 覃维祖 (清华大学, 北京　100084) [] 30 , 。 , 20 , , , 。 , , , 、、。 , , , 。 [] ;;;;; [ ] TU52 8.042 [] A 　　　　[] 1002-8498(2009 )04-0007-04 Development and Problem of Concrete Admixture in China Qin Weizu (Tsinghua University , B eijing 　100084, China ) Abstract:Concrete admixture has gott en rapid development in civil engineering ield in re orm and opening or thirty years.From original rosin heat aggregated air entraining agent and naphthalene-based water reducer to high per ormance water reducer, the concrete admixture play s an important role in improving concrete durability and construction quality, and reducing cement and water quantity o concrete.Furthermore, combining with the development course o concrete admixture, some existing problems in its application are put orward, such as improper use o concrete admixture, wrong design idea, location deviation o code, and so on.At present, concrete admixture is necessary or engineering building, and as the development o engineering building, the technology research or admixture should be continued. Key words:concrete;admixture;water reducer;high per ormance;development ;problem 　　1978 10 , [1] ), 。20 , 50 , ——— ,, 。 。、 。30 , , , 。 。 , , , , ; , , , , , , 。