Novel high-strength concrete for prefabricated reinforced concrete hollow square piles

Abstract

The invention discloses novel high-strength concrete for prefabricated reinforced concrete hollow square piles. The high-strength concrete is composed of the following raw materials in parts by weight: 3 parts of basalt fibers, 2 parts of steel fibers, 4 parts of glass fibers, 100 parts of cement, 90 parts of fly ash, 900 parts of gravels with the particle size of 10-15 mm, 200 parts of gravels with the particle size of 15-20 mm, 800 parts of sand, 130 parts of water, 1.5 parts of an amino-sulfonate high-efficiency water reducing agent, 10 parts of bentonite, 0.5 part of a super plasticizer, 1 part of an air entraining agent, 0.1 part of a defoaming agent, 0.2 part of a rosin soap, 0.05 part of a tackifier, and 0.3 part of calcium stearate. The novel high-strength concrete for the prefabricated reinforced concrete hollow square piles can significantly improve single-pile bearing capacity of the square piles, has the strength improved by 50% or more compared with concrete of the prior art, and can be specially used for the prefabricated reinforced concrete hollow square piles.

Description

technical field [0001] The invention relates to a novel high-strength concrete for prefabricated reinforced concrete hollow square piles. Background technique [0002] Concrete is a living building material. With the continuous development of concrete composition materials, people's understanding of material composite technology has been continuously improved. The performance requirements of concrete are not limited to compressive strength, but on the basis of strength, more attention is paid to the balance and coordination of comprehensive indicators such as durability and deformation performance of concrete. The requirements for various performance indicators of concrete are more clear, detailed and specific than before. At the same time, the improvement of the level of construction equipment and the continuous emergence and promotion of new construction techniques have made concrete technology adapt to different design, construction and use requirements, and has develop...

AI Technical Summary

Problems solved by technology

However, the two techniques have the common disadvantages of low bearing capacity of single piles and large soil squeezing effect during construction. The protection of surrounding road pipelines and adjacent buildings must be fully considered during construction.