Application of HP-400 Polycarboxylate Admixture in ChaoTianMen Bridge;

Chongqing Chaotianmen Yangtse River Bridge, the gate of Chongqing, locates in the Central Business District (CBD) of Chongqing.

Current management mode of Caotianmen market is to set up the stag e to let businessmen develop, whose essence is to implement market management.

China s closing the door to international intercourse and sticking to old ways absolutely reversed Chinese image in the late Qing Dynasty,China was rapidly reduced from the central kingdom to the edge of the world and became an ignorant and backward nation in the eyes of Westerns.

The data of current capacity and ammonia nitrogen density of Chaotianmen cross section from 2006 to 2007 were grouped according to the flood season and the non-flood season,then the Spss software was used to make the analysis of the two groups of data to draw the conclusion.