The diafting of new building matcrial spccification of concrete pumping aid JC473-2001 was introduccd detail in the paper,in which the general principalof drafting,the rcaffirmation of controlled concrete and tested concredt,the supplement test,the detailed modification of test mcthod,index and parameters ete.

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.

Analysis on causes of pumping concrete cracking and preventive measures;

Improved technique of pumping concrete;

Preliminary discussions about reasons and preventions of crack in pumping concrete;

In order to solve the abrasion of concrete pumping system under the condition of multiphase fluid which is highly nonlinear and non-continuous,an analytical method named the quasi-non-continuous flow numerical simulation was put forward,in which the incompressible ideal gas,calcium sulfate and calcium sulfide are used to simulate the multiphase flow in concrete pumping pipe.