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Watersaving construction technique for maintaining concrete wet

A construction technology and concrete technology, applied in the direction of roads, road repair, roads, etc., can solve the problems of unsatisfactory water conservation and maintenance time, affecting the service life of concrete, etc., and achieve the effect of reducing maintenance construction costs and improving maintenance quality.

Inactive Publication Date: 2004-10-27
湖南圣华节水科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a method not recognized by experts, because a large amount of water is sprinkled on the road surface and penetrates into the base layer, which is easy to generate mud and hollow out the roadbed, which seriously affects the service life of concrete
[0003] No. 00126699.3 and No. 01257450.3 prior patent applications (publication or announcement date are respectively 2001.07.25 and 2002.09.04) that the developer of the present invention participated in the design are all concrete water retention and maintenance membranes, but these membranes are applied to concrete maintenance alone, The water retention time is only 18-36 or 10-72 hours. After that, it needs to be watered again. The one-time water retention and maintenance time is still far from ideal

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: The semi-rigid base of the expressway, 4% cement stabilized crushed stone, the width of the roadbed is 13.23 meters, and the thickness is 36 centimeters. The maintenance adopts the 102 products of Yanghushen-1 series. After the concrete roadbed is paved, lay 15 rolls of curing film core film on the roadbed one by one or at the same time. The core membrane absorbs 0.8 kg of water. Then cover the mask on the core film (9.4×13.8m 2 ), press both sides with heavy objects to prevent the wind from blowing up. There is no need to water again during the curing period.

Embodiment 2

[0031] Embodiment 2: No. 325 cement concrete pavement, the pavement width is 8.25 meters, and the thickness is 26 centimeters. The maintenance adopts 102 products of the Yangyang-1 series. After the concrete pavement is paved and the expansion joints are cut, lay 10 rolls of curing film core film on the road surface one by one or at the same time. The laying direction is parallel to the road surface direction, and then sprinkle water evenly on the core film until the core film fully absorbs water and bulges up evenly. At this time, the core membrane absorbs 0.8 kg of water per square meter. Then cover the mask on the core film (50×9.5m 2 ), press both sides with heavy objects to prevent the wind from blowing up. There is no need to water again during the curing period.

Embodiment 3

[0032] Example 3: The cement concrete pavement of the airport runway is 48m wide. It is divided into 12 layings. The width of each laying is 4m and the thickness is 25cm. After the airport concrete pavement is paved and the expansion joints are cut, the curing film core is laid on the pavement in sequence, the laying direction is perpendicular to the pavement direction, and then water is evenly sprinkled on the core film, and the core film absorbs 0.8 kg per square meter until the core film fully absorbs water and bulges up evenly, then cover the core film with a mask (15×5.0m 2 ), both sides are pressed with sand and gravel to prevent the wind from blowing up. There is no need to water again during the seven-day maintenance period.

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Abstract

A water-saving technology for curing concrete includes spreading concrete without floating water, sprinkling water, covering by a hydroscopic moisture-preserving cored film, sprinkling water until the cored film is saturated, covering by a surface film, and fixing its edges unitil the curing stage is finished. Its advantages are high curing quality and less consumption of water.

Description

technical field [0001] The invention relates to a construction method for water-saving and moisturizing maintenance of concrete such as road construction. Background technique [0002] In highway construction, concrete curing methods include natural curing and curing agent curing. Generally, the natural maintenance method is adopted: when the natural temperature is higher than 5°C, cover the concrete with grass bags, sacks, sawdust, geotextiles, geomembranes and other materials, and continuously water the covering materials. Therefore, a large amount of water resources and labor are consumed, and due to the inconvenient water supply, water trucks must be used for water maintenance from different places, which brings great inconvenience to concrete maintenance, easily causes concrete burnout, and greatly increases the maintenance cost of construction enterprises. At present, many provinces adopt agricultural film maintenance, that is, after the concrete is paved, no floating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/03
Inventor 刘晓剑
Owner 湖南圣华节水科技股份有限公司
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