A construction method for anti-cracking of dam anti-seepage panel
An anti-seepage panel and construction method technology, applied in marine engineering, water conservancy engineering, coastline protection and other directions, can solve problems such as high operation and construction requirements, inability to apply non-structural cracks, etc., to solve the crack problem and save costs.
Active Publication Date: 2021-02-26
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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Problems solved by technology
The design method of this invention is more reliable than the methods of limiting the temperature difference and increasing the strength of the panel in the prior art, but it cannot be applied to non-structural cracks, and the operation and construction requirements are relatively high
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Embodiment Construction
[0031] The present invention will be further described below in conjunction with the accompanying drawings of the description.
[0032] The anti-cracking construction method of the dam anti-seepage panel comprises the following steps:
[0033] Step 1, design the concrete mix ratio: 222kg of cement, 74kg of fly ash, 685kg of fine aggregate, 572kg of 5-20mm coarse aggregate, 699kg of 20-40mm coarse aggregate, 148kg of water, 2.96kg of per cubic meter of material Water agent, 0.024kg air-entraining agent, as follows:
[0034]
[0035] Step 2, rock and concrete foundation surface treatment: before pouring concrete on the rock foundation surface, remove loose rocks, remove debris and soil on the foundation surface, and rinse them with pressure water; when pouring layered concrete, the construction joints are chiseled manually The thickness is at least 3cm, and the laitance, loose materials and pollutants on the joint surface are removed, rinsed with pressure water, and kept moi...
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The invention belongs to the technical field of infrastructure engineering, and in particular relates to an anti-cracking construction method for dam anti-seepage panels. The specific steps include: designing the concrete mix ratio, treating rocks and concrete foundation surfaces, measuring and setting out lines, installing formwork, steel bars, and waterstops. board, warehouse inspection, concrete configuration, concrete transportation, concrete pouring, temperature detection, and maintenance; the invention reduces the use of cement by blending fly ash in the mixing ratio, and reduces the disadvantages of the concrete structure caused by the hydration temperature rise of the concrete itself, It can also save costs; through the use of electronic thermometers, the temperature difference between the inside and outside of the concrete can be grasped, and the concrete curing can be adjusted in time according to the change of the inside and outside temperature difference, so that the inside and outside temperature difference can be controlled within 20°C, which can better solve the problem of cracks caused by the temperature difference.
Description
technical field [0001] The invention belongs to the technical field of infrastructure engineering, and in particular relates to an anti-cracking construction method for a dam anti-seepage panel. Background technique [0002] Anti-seepage technology is a commonly used technology in the construction of contemporary construction projects in my country. Doing a good job in anti-seepage construction in water conservancy projects will help to ensure the quality of water conservancy projects and promote the development of my country's social economy. At this stage, the problem of dam leakage has become one of the main factors restricting the development of water conservancy projects in my country. Project leakage not only affects the aesthetics and practicability of buildings, but also restricts the stable development of modern society in my country. Technology is more difficult to solve the problem of dam water leakage. [0003] The anti-seepage cracks of the concrete face of the ...
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IPC IPC(8): E02B7/02E02B3/16C04B28/00
CPCC04B28/00E02B3/16E02B7/02C04B14/00C04B18/08C04B2103/302C04B2103/304
Inventor 黄国军徐仁军闫斌李海强朱江旭
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD