Massive concrete pouring method

A large-volume concrete and volume technology, applied in construction, infrastructure engineering and other directions, can solve the problems of small size, no success, and no precedent for grouting construction, and achieve the effects of reducing costs, reducing usage, and reducing difficulty.

Inactive Publication Date: 2016-04-27
王丰利
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Problems solved by technology

[0004] In the current construction technology, the volume of grouting construction is not large, which can be realized by conventional means, but for the volume larger than 50M 3 There is no precedent and no successful experience for reference, and the pouring of grouting materials is different from the pouring of concrete, because the content of cementitious materials in grouti

Method used

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  • Massive concrete pouring method

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Embodiment

[0026] The pouring method of a kind of large-volume concrete of the present invention is applied in the grouting construction of the secondary grouting pit of the 800MN press main frame. The length of the single block of the secondary grouting pit of the 800MN press main frame is 13.6m, the width is 6.1m, and the total area is 82.96m 2, the floor grouting thickness is 0.3m, and the grouting thickness of the edge and central opening is 0.65m. The calculated grouting volume is about 30m 3 , the two foundations are about 60m 3 , to calculate a certain loss of 5%, a total of 63m of secondary grouting material is required 3 , material density 2200kg / m 3 , the amount of material used is about 138.6 tons, which is super large monomer foundation grouting.

[0027] (A) Formwork: support the formwork around the secondary grouting pit of the main engine of the 800MN press, and install cooling pipes in the area where the thickness reaches 200mm. The inlet and outlet of the cooling pip...

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Abstract

The invention discloses a massive concrete pouring method. The massive concrete pouring method comprises the steps of erecting of formworks, grout making, pouring, curing, secondary pouring and the like. The ratio of the length of cooling pipes to the size of a grouting body serves as a guidance parameter for distributing the cooling pipes, so that the difficulty of secondary grouting is lowered on the premise of ensuring the proper cooling capacity of the cooling pipes, and the usage quantity of the cooling pipes and the cost are reduced; galvanized corrugated pipes or finned galvanized steel pipes are used as the cooling pipes, the contact area between the cooling pipes and the pouring body is enlarged, the stress direction is changed, and complete planar stress is changed to arc stress along the surfaces of the corrugated pipes; part of ice blocks are used for replacing part of water to carry out mixed grout making, and ice particles absorb hydration heat and melt gradually; temperature is not increased while the melting ice particles absorb a large amount of hydration heat, evaporate, dissipate and melt into water, so that the temperature inside the pouring body is further decreased.

Description

technical field [0001] The invention relates to a construction method of a grouting body, in particular to a large-volume concrete pouring method. Background technique [0002] At present, micro-expansion grouting materials are more and more commonly used in the secondary grouting of equipment foundations. The product features are as follows: [0003] Early strength, high strength: 1-3 days compressive strength above 30-50Mpa; anti-segregation performance: high-strength non-shrinkage grouting material overcomes the segregation phenomenon caused by excessive water addition in field use; green environmental protection: does not contain benzene series , halogenated hydrocarbons, formaldehyde, heavy metals and other components, non-toxic, tasteless, non-polluting, non-flammable and non-explosive, can be transported as general cargo; micro-expansion: ensure close contact between equipment and foundation, no shrinkage after secondary grouting; self-flowing High performance: it ca...

Claims

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Application Information

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IPC IPC(8): E02D15/02
Inventor 王丰利
Owner 王丰利
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