Formula and production process of STC ultrahigh-toughness concrete

Abstract

The invention discloses formula and a production process of STC ultrahigh-toughness concrete, wherein the STC ultrahigh-toughness concrete comprises the following raw materials: 60-70 parts of cement,10-15 parts of a mineral admixture, 40-60 parts of coarse aggregate, 20-30 parts of fine aggregate, 25-30 parts of red mud powder, 14-24 parts of an anti-cracking toughening agent, 10-15 parts of steel fiber, 20-25 parts of glass fiber, 20-30 parts of stainless steel fiber, 15-20 parts of polyvinyl alcohol fiber, 32-42 parts of spider silk imitation fiber, 7-9 parts of a high-performance water reducing agent, 18-22 parts of a PH sensitive hydrogel, and 30-40 parts of water. According to the invention, by adding the anti-cracking toughening agent, the steel fibers, the glass fibers, the stainless steel fibers, the polyvinyl alcohol fibers and the spider silk imitation fibers, the added fibers and the added anti-cracking toughening agent are high-strength and high-toughness materials, so that the lightness and the toughness of the concrete are greatly improved, the working performance of the concrete can be well improved, the self-compacting strength is improved, and the shrinkage performance is improved.

Description

technical field [0001] The invention relates to the field of concrete, in particular to an STC ultra-high toughness concrete formula and a production process. Background technique [0002] Concrete is referred to as "concrete" for short: it refers to the collective name of engineering composite materials that use cementitious materials to cement aggregates into a whole. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. Cement concrete is the main material of my country's national economic construction. With the increasing application range of concrete, its performance degradation in the natural environment is gradually exposed. Ordinary cement concrete has high compressive strength and high stiffness, but it has the charac...

AI Technical Summary

Problems solved by technology

Ordinary cement concrete has high compressive strength and high stiffness, but it has the characteristics of shrinkage cracking, low tensile strength and poor toughness during the setting and hardening process, and its brittleness becomes more obvious with the increase of strength. Greatly affects the durability of concrete structures

[0003] However, the concrete currently on the market has low tensile strength, which is the weakness of traditional concrete, and the cracking of concrete under tensile stress will affect the safety and durability of the structure