Sound sucking high elasticity concrete material for road

A technology of elastic concrete and pitch, applied in the field of concrete, can solve the problems of shrinkage joint width, high rigidity, strong vibration, etc., and achieve the effect of improving deformation ability, high elasticity, and reducing road noise

Inactive Publication Date: 2006-08-23
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a road sound-absorbing high-elasticity concrete material for the defects and deficiencies of the existing cement concrete pavement, such as high rigidity, high noise, wide shrinkage joints, and strong vibration.

Method used

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  • Sound sucking high elasticity concrete material for road

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Embodiment Construction

[0019] The following embodiments are provided in conjunction with the contents of the present invention:

[0020] Road sound-absorbing high-elasticity concrete material is composed of Portland cement, fly ash, calcium carbonate mineral powder, broken rubber tire particles, coarse aggregate, fine aggregate, high-efficiency water reducer and water in a certain proportion, with the following process method Completion: first dry mix cement, fly ash and calcium carbonate mineral powder according to the design requirements of the mix ratio for 1 minute, add 40% water and stir for 2-3 minutes; then add broken rubber tire particles A and B, and stir for 3 minutes ; Then add coarse aggregate and fine aggregate, the stirring time is 15 seconds to 1 minute, and finally add the remaining water dissolved with high-efficiency water reducer, and stir to form a concrete mixture, and the stirring time is 2-3 minutes. Pave the pavement with the well-mixed concrete mixture, and vibrate properly,...

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Abstract

The sound absorbing high elasticity concrete material for road consists of Portland cement 15.0-17.0 wt%ú¼flyash 1.0-3.0 wt%ú¼ calcium carbonate mineral powder 8.6- 9.6 wt%ú¼crushed rubber tyre grain A 1.15-2.15 wt%ú¼ crushed rubber tyre grain B 2.35- 3.35 wt%ú¼ coarse aggregate 25.6-28.6 wt%ú¼ fine aggregate 29.3-32.0 wt%ú¼ water 9.0-10.5 wt% and efficient water reducing agent 0.20-0.40 wt%. The present invention has the advantages of full utilization of waste tyre, reducing environmental pollution, low cost, etc. and the deposited concrete road has high elasticity, high softness, reduces extension joint, less noise and environment friendship.

Description

technical field [0001] The invention relates to concrete in the technical field of building materials, in particular to a road sound-absorbing high-elasticity concrete material. Background technique [0002] At present, the pavement materials of domestic urban roads and expressways are basically composed of cement concrete or asphalt concrete materials. Ordinary cement concrete pavement is very rigid, and when cars run on it, it will generate a lot of noise, which will cause serious noise pollution to the residents near the road. In addition, due to the large temperature deformation of the cement concrete material, during the construction of the cement concrete pavement, in order to ensure the durability of the pavement, a wide shrinkage joint is usually set up, which will also cause large vibrations. Therefore, in order to achieve driving comfort, the mainstream of road construction in the world today is to use asphalt mixture as the pavement material. However, as asphalt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/08C04B18/22C04B24/20C04B14/28
CPCY02W30/91
Inventor 陈兵陈龙珠
Owner SHANGHAI JIAO TONG UNIV
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