The application technology of admixtures on expressway cement concrete pavements in China

摘要

The correcting application of admixtures in cement concrete pavements is one of critical technology on expressway. In this paper author researches and sums up the construction experiments of admixture for slipform concrete paving in Chinese expressway. The classes, properties and application Technical methods of reduce water agents, super-plasticizers, sustaining plastics agent, air entrainers etc have been put forward that be comonly used to Chinese freeway concrete pavements. In specially I first advance new concepts and technical demands on which tests the chemistry and volume suitabilities of various kinds admixtures with the cement used in this expressway concrete pavements.