Impervious anti-cracking machine-made sand concrete

Abstract

The invention discloses impervious anti-cracking machine-made sand concrete. The impervious anti-cracking machine-made sand concrete is characterized by comprising the following components in parts byweight: 450-480 parts of cement, 80-130 parts of coarse aggregates, 60-80 parts of fine aggregates, 60-90 parts of super-fine sand, 650-750 parts of machine-made sand, 90-120 parts of emery, 1100-1130 parts of broken stones, 10-18 parts of impervious powder, 24-32 parts of a shrinkage reducing agent, 18-23 parts of a water-reducing agent and 0-8 parts of a defoaming agent. The impervious anti-cracking machine-made sand concrete has the beneficial effects that preparation of high-performance concrete from the impervious agent and the machine-made sand is a leading development direction in thetechnical field of concrete preparation, the requirements for permeability resistance and waterproofness are met, the problem that river sand resources are in shortage is solved, smooth construction of concrete engineering and excellent quality of a concrete structure are ensured, construction is facilitated, and the cost is low.

Description

technical field [0001] The invention specifically relates to a concrete, in particular to an anti-seepage and anti-crack machine-made sand concrete. It belongs to the field of concrete technology. Background technique [0002] Impervious concrete is generally used for basement floors and wall panels of civil buildings, as well as floor and side walls of subway projects. In addition to meeting the strength requirements of concrete, impermeability and waterproof performance are the most important properties of this type of concrete. Not only is the concrete itself required to have good impermeability, but it is also required that the poured impermeable concrete structure must not have harmful cracks; It cannot meet the requirements of impermeability and waterproof. Water is pervasive. Some surface defects of concrete, such as honeycombs, holes, pockmarks, exposed ribs, etc., are easy to cause water leakage. Impermeability is the most important index of concrete durability,...

AI Technical Summary

Problems solved by technology

Not only is the concrete itself required to have good impermeability, but it is also required that the poured impermeable concrete structure must not have harmful cracks; Can not meet the requirements of impermeability and waterproof