Porous volcanic aggregate concrete T beam

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 ...

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.