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Composite protection structure for channel

A composite protective structure and river canal technology, applied in coastline protection, water conservancy projects, artificial waterways, etc., can solve problems such as inability to large-scale paving, unfavorable ecological exchange, and shortened service life, so as to be beneficial to ecological exchange and improve economic benefits. and social benefits, long service life

Inactive Publication Date: 2008-01-09
XINGTAI ROAD & BRIDGE CONSTR GENERAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three problems with this composite protective structure. First, it adopts on-site pouring or masonry, so the construction speed is slow and cannot be paved on a large scale; The third is poor frost resistance. Due to the large temperature shrinkage coefficient of asphalt concrete and ordinary concrete, it is easy to freeze-thaw damage in northern my country and reduce the service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The material components of the porous modified cement concrete are calculated by weight: 500 kg of cement; 1800 kg of crushed stone with a particle size of 45mm; 160 kg of water and 24 kg of cement modifier, and can be mixed evenly with a paver Pave directly on the clay, cement soil, impermeable membrane and gravel soil layer in the lower part. The compressive strength is 38.2MPa, the flexural strength is 6.3MPa, and the porosity is 17.1%.

Embodiment 2

[0021] The material components of the porous modified cement concrete are by weight: 200 kg of cement; 1,400 kg of gravel with a particle size of 5 mm; 100 kg of water; and 5 kg of cement modifier. The compressive strength is 3.5MPa, the flexural strength is 1.3MPa, and the porosity is 35%.

Embodiment 3

[0023] The material components of the porous modified cement concrete are by weight: 300 kg of cement; 1,500 kg of gravel with a particle size of 20mm; 115 kg of water; and 17.25 kg of cement modifier. The compressive strength is 14.3MPa, the flexural strength is 2.7MPa, and the porosity is 28.2%.

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Abstract

A ditch protection structure includes a bottom anti-leaking layer of clay or film, a middle layer of sand and gravel, a top layer of modified concrete of multi holes. The modified concrete contents in weight of 200-500 lot cement, 1000-1800 lot gravel of particle size of 5-80mm, 100-180 lot water and modify agent in a content of 2%-30% of water. The structure could be paved by paving machine for large area and is of low shrink index, anti-break under low temperature and stable under high temperature, good impact and wear resistance.

Description

Technical field: [0001] The invention relates to a composite protective structure for river canals. Background technique: [0002] Urban river canals are responsible for water diversion, water storage, landscape, flood control and drainage, etc., and have high requirements for protection. At present, the main protection methods include clay protection, cement soil protection, stone protection, buried membrane protection, Asphalt concrete protection, cement concrete protection, etc. In order to meet the multi-faceted functional requirements of urban rivers and canals, as well as meet the requirements of anti-seepage, anti-freeze, durability and ornamental, the current protective structure generally adopts a composite protective structure, that is, the lower layer generally uses clay, membrane material protective layer, etc. The seepage layer is mainly anti-seepage. The middle layer is made of gravel soil and other materials, and the upper layer is made of paving stones, pref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B5/02E02B3/12C04B24/26C04B24/04
Inventor 李殿双陈大伟袁喜奎程强魏云飞霍朋信李恒达杜海强连艳霞
Owner XINGTAI ROAD & BRIDGE CONSTR GENERAL
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