Formula and construction method of concrete

Abstract

The invention discloses a formula and a construction method of concrete. The formula comprises the following components in parts by weight: 80-100 parts of cement, 20-30 parts of 48-70-mesh fly ash, 30 parts of 10-mesh concrete waste residue, 300-340 parts of gravel, 30-40 parts of water, 6-8 parts of a cement concrete enhancer, 5-7 parts of a water reducer and 5-7 parts of a retarder. The construction method comprises the following processes: stirring concrete, pouring, compacting and curing the concrete, jointing a seam, paving mat coat and the like. Through adoption of the formula, the concrete is enabled to have sufficient structural strength so as to achieve relatively high durability while relatively good water permeability can be ensured; pores with multi-stage diameters can be formed, and when low-diameter pores are blocked, high-diameter pores can still permeate water, so that the water permeability time is prolonged; the construction efficiency is high, and manpower and material resources are saved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a concrete formula and a construction method. Background technique [0002] Concrete can be divided into ordinary concrete and permeable concrete. The difference between the two is that ordinary concrete is always vibrated as much as possible during construction to reduce porosity and increase its strength; while permeable concrete adopts different particle sizes Aggregate, while meeting its strength requirements, realizes the structural characteristics of porous and continuous pores in the inner structure of the concrete, so that it has good water permeability and sound absorption. It can absorb and eliminate sound through the pores, and can also drain rainwater through the pores. into the ground to achieve the purpose of drainage and replenishment of groundwater resources, which can improve the condition of groundwater resources and promote underground ecological b...

AI Technical Summary

Problems solved by technology

[0003] (1) Water permeability and structural strength cannot be combined: water permeability is mainly determined by porosity. When the porosity is larger, the water permeability is better. However, due to the large porosity, the structural strength is reduced to a certain extent and the durability is reduced. ;

[0004] (2) After using for a period of time, due to the influence of various sundries, the pores are blocked, the water permeability is reduced or even completely lost;

[0005] (3) The construction method is single and the construction efficiency is low, which is also one of the obstacles restricting the popularization and application of permeable concrete

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