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Construction method of underwater rockfill concrete

A technology of rockfill concrete and construction method, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of high unit cost, large hydration temperature rise, high cement consumption, and achieve the goal of reducing usage, improving construction efficiency, and shortening construction period. Effect

Inactive Publication Date: 2011-12-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, underwater non-dispersible concrete has disadvantages such as high cement consumption, large hydration temperature rise, easy cracks, and high unit cost.

Method used

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  • Construction method of underwater rockfill concrete
  • Construction method of underwater rockfill concrete
  • Construction method of underwater rockfill concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The construction method of underwater rockfill concrete, the specific implementation steps are as follows:

[0021] (1) Set up templates for the warehouse surface of the underwater rockfill concrete to be poured (such as figure 1 As shown), there is no need to set a template for the warehouse surface with natural barriers;

[0022] (2) Use stones or pebbles with a particle size of 30-80cm to accumulate naturally to fill the surface of the warehouse to be poured, and the thickness of the surface of the warehouse is 1.0m;

[0023] (3) Use a small boat with a water pump (such as figure 2 As shown) put a certain amount of protective agent to protect the integrity of underwater self-compacting concrete into the water body area where underwater rockfill concrete needs to be poured;

[0024] (4) Transport the underwater self-compacting concrete to the surface of the rockfill through the conduit (such as image 3 shown), pour underwater self-compacting concrete from the upp...

Embodiment 2

[0027] The construction method of underwater rockfill concrete, the specific implementation steps are as follows:

[0028] (1) Set formwork for the warehouse surface of the underwater rockfill concrete to be poured, and there is no need to set the formwork for the warehouse surface with natural barriers;

[0029] (2) Use stones or pebbles with a particle size of 80-120cm to accumulate naturally to fill the surface of the warehouse to be poured, and the thickness of the surface of the warehouse is 2.0m;

[0030] (3) Use a boat with a water pump to inject a certain amount of protective agent to protect the integrity of the underwater self-compacting concrete into the water area where the underwater rockfill concrete needs to be poured;

[0031] (4) The underwater self-compacting concrete is transported to the surface of the rockfill body through the conduit, and the underwater self-compacting concrete is poured from the upper surface of the rockfill body until it completely fill...

Embodiment 3

[0034] The construction method of underwater rockfill concrete, the specific implementation steps are as follows:

[0035] (1) Set formwork for the warehouse surface of the underwater rockfill concrete to be poured, and there is no need to set the formwork for the warehouse surface with natural barriers;

[0036] (2) Use stones or pebbles with a particle size of 120-150cm to accumulate naturally to fill the surface of the warehouse to be poured, and the thickness of the surface of the warehouse is 3.0m;

[0037] (3) Use a water pump to inject a certain amount of protective agent to protect the integrity of the underwater self-compacting concrete into the water body area where the underwater rockfill concrete needs to be poured;

[0038] (4) The underwater self-compacting concrete is transported to the surface of the rockfill body through self-burying pipes, and the underwater self-compacting concrete is poured from the upper surface of the rockfill body until it completely fil...

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Abstract

The invention discloses an underwater rockfill concrete construction method, which belongs to the technical field of building construction. The present invention adopts block stones or pebbles with a particle size of more than 15cm, transports them to the surface of the underwater warehouse for natural accumulation by using ordinary transportation tools, and then puts a protective agent to protect the integrity of the underwater self-compacting concrete into the water, and uses the concrete that meets the requirements. The underwater special self-compacting concrete is poured naturally from the surface of the rockfill body with the help of a conduit, and the underwater special self-compacting concrete is used to fill the rockfill gap by its own weight, forming a dense and high-strength underwater rockfill concrete. The method is easy to construct, and has remarkable effects in improving construction efficiency and saving construction cost. The formed underwater rockfill concrete has less cement consumption, low hydration temperature rise, and has the advantages of energy saving and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to an underwater rockfill concrete construction method. Background technique [0002] With the maturity and development of self-compacting concrete technology, in recent years, a new rock-fill concrete (Rock Filled Concrete, RFC for short) dam construction method (Jin Feng, An Xuehui, Rock-Fill Concrete Dam Construction Method, Chinese Patent , Patent No. 03102674.5; An Xuehui, Jin Feng, riprap type rock-fill concrete construction method, Chinese patent, patent No. 200710121791.3; Jin Feng, An Xuehui, ordinary rock-fill concrete construction method, Chinese patent, patent No. 200710100315.3) has started get applied. Rockfill concrete uses self-compacting concrete instead of high-flow mortar, puts rockfill with a certain particle size directly into the warehouse to form a rockfill body with gaps, and then pours self-compacting concrete from the upper part o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/10E02D15/06
Inventor 金峰周虎陈松贵安雪晖王进廷
Owner TSINGHUA UNIV
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