| The pump concrete is widely applied at the general room constructs the structure concrete, the path concrete, the mass concrete, the high-rise construction, the hydraulic architecture and so on in each kind of engineering construction because its work speed quick, the labor intensity is small, the production efficiency higher merit. Also may make horizontal and the vertical transportation (refers with pumps), Also may straight take over the use of the cotton material pole to pour (refers pumps with automobile). This request concrete not only satisfies the design intensity durably, and so on, Also must satisfy the pipeline to transport to the concrete mixing request, Namely the request concrete mixes the thing to have well may pump the nature. Often receives various factor influence in the actual construction to cause the concrete to stop up the tube, may the pumping difference, thus the delay project progress even affects phenomenon and so on concrete quality.This article through directs Luan to enter the pump concrete which in the Tianjin water source protection project Z11 sign section appears to stop up the tube question is the introduction spot, carries on the search and the analysis to each kind of factor, finally locks stops up the tube the true reason, through tries to match, the pump testing method according to qualification designated the best mixture ratio, success solution this question, had guaranteed the project progress, protects the Tianjin city water supply water source to be prompt, the health, the security. |