Test method of bottom slurry adding distorted concrete construction process

Abstract

The invention discloses a test method for a bottom slurry adding distorted concrete construction process. The test method comprises the following steps: placing a test box on a test platform; mixing cushion layer concrete according to the concrete mixing proportion, placing the cushion layer concrete in a test box, and vibrating and compacting; constructing by adopting a bottom slurry adding process, building a ridge and enclosing a frame on the cushion concrete, calculating the slurry adding amount required to be detected, and uniformly adding slurry into the frame; pouring a roller compacted concrete mixture onto the slurry; vibrating and compacting the distorted concrete by using a vibrating rod; loosening the fastening bolts and detaching the test box, moving the concrete out of the test box, and taking the distorted concrete of the layer or a concrete mixture with the thickness being 10 cm away from the top face; then detecting internal compactness condition of the distorted concrete, sampling the mixture, and performing the performance of the hardened concrete. Through the test method, the permeation condition of the slurry in the concrete can be observed, including the permeation route and the permeation radius of the slurry, so as to determine the construction parameters such as the slurry adding amount, the vibrating time, the vibrating radius and the maximum standing time of the slurry of the distorted concrete. The method guarantees the construction quality of the distorted concrete, controls the construction cost and has a remarkable effect.

Description

technical field [0001] The invention relates to the technical field of metamorphic concrete construction, in particular to a test method for the construction technology of metamorphic concrete with bottom grouting. Background technique [0002] As a major hydropower country, the construction technology of roller compacted concrete and metamorphic concrete in China has developed rapidly and ranks among the top in the world. Metamorphic concrete is to add grout to the roller compacted concrete to make the concrete rich in grout and vibrate. The metamorphic concrete constructed by adding grout at the bottom is to add grout to the next layer of metamorphic concrete, and then vibrate to make the grout permeate upward until the surface of the layer of concrete is flooded. This kind of grouting method vibrates evenly, and it is not suitable for leakage of vibration. From the comprehensive analysis of the diffusion compaction mechanism and the quality of concrete, the bottom grouti...

AI Technical Summary

Problems solved by technology

[0009] Since the specification does not specify the test method for the permeation of metamorphic concrete grout, nor does it propose how to determine the parameters of the construction process of metamorphic concrete. Although some experts and scholars have conducted a lot of research on metamorphic concrete, how to detect the permeation of grout in metamorphic concrete. And based on this to determine the construction parameters of metamorphic concrete, there is still no relatively uniform test method, this test method aims to solve this problem