Anti-cracking concrete for anti-seepage panel and preparation method of anti-cracking concrete
A technology of anti-seepage panels and concrete, which is applied in the field of concrete materials, can solve the problems of compensating the uncertainty of shrinkage concrete expansion performance, etc., achieve the effect of free expansion, reduce cracks, and improve crack resistance
Inactive Publication Date: 2018-05-18
ZHENGZHOU UNIV
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Problems solved by technology
However, there are uncertainties in the expansion performance of shrinkage-compensated concrete, which is closely related to the type and amount of expansion agent, the level of on-site curing, and the changes in ambient temperature.
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[0017] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0018] The invention provides a crack-resistant concrete used for an anti-seepage panel and a preparation method thereof.
[0019] The anti-cracking concrete consists of: cement, fly ash, expansion agent, sand, gravel, water reducing agent and fiber, and the mass ratio of each component is 8-10% of cement, 2-4% of fly ash, expansion 1-2% of agent, 5-10% of water, 28-32% of sand, 50-55% of gravel, 0.2-0.4% of water reducer, 0.04-0.05% of fiber, and the sum of the mass percentages of each component satisfies 100%.
[0020] in:
[0021] The cement is 42.5 ordinary Portland cement; the fly ash is F class I fly ash; the expansion agent is UEA expansion agent; the sand is inactive natural river sand; The amount of non-active crushed stones in the range of 5m...
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Abstract
The invention provides anti-cracking concrete for an anti-seepage panel and a preparation method of the anti-cracking concrete and belongs to the technical field of concrete materials. The concrete isprepared from cement, fly ash, an expanding agent, sand, gravel, a water reducing agent and the like and is specifically prepared from the following components in mass percent: 8-10% of the cement, 2-4% of the fly ash, 1-2% of the expanding agent, 5-10% of water, 28-32% of the sand, 50-55% of the gravel, 0.2-0.4% of the water reducing agent and 0.04-0.05% of fiber, and the sum of the percent of each component is 100%. Compared with common fly ash concrete, the concrete prepared by the method provided by the invention has the advantages that the early cleavage strength is obviously improved, the crack resistance is enhanced, and cracks are reduced.
Description
technical field [0001] The invention relates to the technical field of concrete materials, in particular to a crack-resistant concrete used for anti-seepage panels and a preparation method thereof. Background technique [0002] The practice of panel concrete engineering at home and abroad shows that the concrete panel often shrinks inevitably due to various reasons during the pouring process and after the reservoir is impounded, and even cracks occur in serious cases, resulting in reduced durability. If these cracks penetrate the panel, it will Water leaks through cracks. When there are few cracks in the face plate and the width is not large, the seepage flow rate is small, and it can pass through the rockfill body and flow downstream without immediately affecting the safety of the dam body. However, when the steel bars in the face plate pass through the cracks and suffer long-term corrosion from water leakage, or due to water-stop damage and other reasons, the face plate f...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C04B28/04C04B16/06C04B111/34
CPCC04B16/0633C04B28/04C04B2111/343C04B2201/20C04B2201/50C04B18/08C04B2103/0068C04B14/068C04B14/02C04B2103/302
Inventor 郭进军王琨韩易辰程林
Owner ZHENGZHOU UNIV