A Construction Method of Metamorphic Concrete with Grouting at the Bottom

Abstract

The invention belongs to the technical field of metamorphic concrete, and in particular relates to a construction method of metamorphic concrete with grouting at the bottom. In the area with high anti-seepage level such as bank slope and bedrock surface, the grout area is spread. Fresh roller compacted concrete is used to artificially build stems, and squares are formed every 1 meter along the length direction to facilitate the measurement of grout volume. The spreading amount is controlled according to the percentage of the RCC volume of the cell. The cement slurry water-cement ratio is controlled at 0.55-0.65. Then lay the roller compacted concrete, close the warehouse, vibrate and close the surface. The vibration can be completed directly by using a high-frequency vibrator with a diameter of 100mm. This construction method is convenient to accurately measure the volume of the added grout; the use of bottom grouting through vibration is more conducive to interlayer bonding; there will be no leakage vibration, and the appearance quality of concrete is guaranteed; the operation is convenient and simple, and under the premise of ensuring safety and quality Realize rapid construction; realize the optimization of slurrying process, reduce construction cost, speed up construction and save construction period.

Description

technical field [0001] The invention belongs to the technical field of metamorphic concrete, and in particular relates to a construction method of metamorphic concrete with bottom grouting. Background technique [0002] Metamorphic concrete: In the rolled-compacted concrete that has been paved, a certain proportion of mortar is added and the dense concrete is vibrated. In water conservancy and hydropower construction, roller compacted concrete is often used. It is a concrete with low water-cement ratio and zero slump. It has the advantages of fast construction, high strength, less shrinkage joints, less cement consumption, low cost, and reduced construction environment. Pollution and other advantages, through vibratory roller vibration, rolling forming, whether it is a large-scale project, or a partial reconstruction and expansion project, the construction is convenient and fast. However, in construction, some parts cannot be rolled by mechanical equipment. The compactness ...

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that although the amount of grout can be accurately controlled, the uniformity of grout cannot be guaranteed. Due to the error of manual cutting, it cannot be guaranteed to be on the same level, so the grout will appear uneven, and when covering concrete During the process, part of the cement paste will overflow the surface of the roller compacted concrete, and it is impossible to judge the vibration effect on the metamorphic concrete during vibration

[0007] The grouted concrete with low slump directly mixed by the mixing station machine can be vibrated directly. The disadvantages are that the construction speed is slow and the cost is high, which is not conducive to saving cost and construction period

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