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Porous volcanic aggregate concrete T beam

A technology of porous volcanic rock and porous aggregate, applied in bridges, sustainable waste treatment, solid waste management, etc., can solve the problems of reducing the durability of concrete structures, affecting the appearance quality of concrete, and the gas cannot be removed in time, so as to improve the quality and appearance effects, improvement of suitability and fluidity, and reduction of viscosity

Inactive Publication Date: 2016-10-12
CHINA ROAD & BRIDGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the construction process, due to the limitation of geographical conditions, although most of the gas in the concrete is eliminated by vibration, what is used in the concrete of the present invention is the local unique porous volcanic rock aggregate as the porous aggregate of the concrete. Due to the influence of many reasons, such as the distribution ratio of the various components in the material, some gas cannot be removed from the interior of the concrete in time, and finally forms voids, bubble
Deep cracks on the surface of the T-beam will seriously reduce the strength of the concrete, causing corrosion of steel bars and steel strands, which will affect the appearance quality of the concrete and reduce the durability of the concrete structure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The porous volcanic rock aggregate concrete T-beam includes a porous volcanic rock aggregate concrete body and steel strands in the porous volcanic rock aggregate concrete body, wherein the weight ratio of raw materials in the concrete body per cubic meter is:

[0023] 400 kg of cement, 80 kg of fly ash, 690 kg of fine aggregate, 1170 kg of porous aggregate, 5.0 kg of water reducing agent, and 140 kg of water.

[0024] The porous aggregate used in this example is local porous volcanic rock. Except for a small number of tenders that use Kenyan local porous volcanic rock as the aggregate raw material, other tenders are limestone and basalt. It adopts two grades of 5-10mm and 10-20mm, which conforms to the continuous grading range of 5-20mm, in which the small gravel with a particle size of 5-10mm accounts for 20% of the weight of the porous aggregate, and the large gravel with a particle size of 10-20mm Crushed stone accounts for 80% of the weight of porous aggregate, and...

Embodiment 2

[0032] Other operating steps in this embodiment are the same as those in Embodiment 1, except that the weight ratio of raw materials in the concrete body per cubic meter is different. In the present embodiment, the weight ratio of raw materials in the concrete body per cubic meter is:

[0033] cement

Embodiment 3

[0035]Other operating steps in this embodiment are the same as those in Embodiment 1, except that the weight ratio of raw materials in the concrete body per cubic meter is different. In the present embodiment, the weight ratio of raw materials in the concrete body per cubic meter is:

[0036] cement

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Abstract

The invention relates to a porous volcanic aggregate concrete T beam, and belongs to the field of concrete building materials. The porous volcanic aggregate concrete T beam comprises a concrete body and steel strands coated in the concrete body, wherein the concrete body is formed by solidifying porous volcanic aggregate concrete, and the weight proportions of raw materials in the porous volcanic aggregate concrete per cubic meter are as follows: 400 to 410 kg of cement, 80 to 90 kg of pulverized fuel ash, 690 to 700 kg of fine aggregate, 80 to 1170 kg of porous aggregate, 5.0 to 6.0 kg of water reducing agent and 140 to 150 kg of water. According to the porous volcanic aggregate concrete T beam disclosed by the invention, by blending the adding amounts of admixture, an additive, graded broken stone, the cement and river sand, the porous volcanic aggregate concrete T beam which is high in strength and is suitable for the tropical zone is developed.

Description

technical field [0001] The invention relates to a concrete building material, in particular to a porous volcanic rock aggregate concrete. Background technique [0002] Concrete T-beam is a load-bearing structure with a T-shaped cross-section, which is the main force-bearing structure of bridge engineering. In the construction process, due to the limitation of geographical conditions, although most of the gas in the concrete is eliminated by vibration, what is used in the concrete of the present invention is the local unique porous volcanic rock aggregate as the porous aggregate of the concrete. Due to the influence of many reasons, such as the distribution ratio of the various components in the material, some gas cannot be removed from the interior of the concrete in time, and finally forms voids, bubble. Deep cracks on the surface of T-beams will seriously reduce the strength of concrete, causing corrosion of steel bars and steel strands, which will affect the appearance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/08C04B14/14C04B14/28C04B20/00C04B38/08E01D2/00
CPCC04B20/0076C04B28/04C04B38/08E01D2/00C04B18/08C04B24/24C04B22/002C04B32/02C04B14/14C04B14/28C04B14/06C04B14/068Y02W30/91
Inventor 安爱军易宏海彭登志雷瑜孟晓鹏李新泽冷冬颜炳仁侯敏崔振东古俊晓徐鑫王立刚魏刚马记姜雅峰王陈李建宝井伟文吴振兴
Owner CHINA ROAD & BRIDGE
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