There is a series of contradictory question for construction of Jiang Jian Bridge:The cast-on-site prestressed concrete is continuous large area and large volume retarded set early strength pumping concrete.

Construction technology of high strength pumped concrete;

In blend ratio design and spread of high strength pumped concrete for long-span steel tube arch bridge, the right compound dewatering agent and expansion agent in compound adulteration, may guarantee the normal concrete pumping and the quality of the works, and at the same time retarded set, quickened strength eliminate the great loss of concrete slump.

The preparation technology of high-grade pumped concrete;

Discussion on the design of pumped concrete mix proportion;

Quality control of the pumped concrete construction in a building of dong fang square;

Test of proportion of machine pump concrete and construction control;

Research on the bulkily granular and high flowing pump concrete and its application;

Analysis on the causes and prevention measures of construction cracks of pump concrete;

Prospect of application of pumpcrete mixed with fly-ash to construction of hydraulic tunnel;

Application of downward pumpcrete to build anti-scour wall on left bank of Shuibuya Hydropower Project;

This paper introduces the detection principle of rebound method and the main factors influencing the detection performance, and analyzes the modification of detecting the pumpcrete with rebound method.