Permeable alkali slag concrete suitable for heavy load pavements and preparation method thereof

Abstract

The invention relates to a permeable alkali slag concrete suitable for heavy load pavements. The concrete is composed of the following components by mass: 70-79 parts of aggregate; 16-20 parts of slag; 0-4 parts of an admixture; 0-0.08 part of an additive; 3-6 parts of an activator; and 3-4 parts of water. The invention also discloses a preparation method of the permeable alkali slag concrete. The method uses alkali slag as the cementitious material, and optimizes the water glass, slag and gravel components to prepare the permeable concrete. Compared with problems of low compressive strength, poor durability and difficult applicability to heavy load pavements in existing permeable concrete, the permeable alkali slag concrete obtained by the invention has certain water permeability, high compressive strength and good wear resistance. The permeable concrete also has good anti-stripping ability and excellent long-term usability.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a permeable alkali slag concrete suitable for heavy-duty road surfaces and a preparation method thereof. Background technique [0002] With the prosperity and development of my country's economy, the process of urbanization is accelerating, and the impermeable pavement and hardened ground are getting older and replacing the natural permeable layer, which has a significant impact on the ecological environment and urban road traffic environment. In the rainy season, urban underground drainage pipes are heavily loaded, and urban waterlogging is prone to occur when the rainfall is slightly larger, causing traffic and travel inconvenience for urban residents, and road surface water will also cause problems such as slippery driving and night glare, and rainwater passes through urban pipes To a certain extent, the discharge will cause the loss of groundwater resources and b...

AI Technical Summary

Problems solved by technology

[0004] At present, the permeable concrete prepared with Portland cement generally has low compressive strength, and it is prone to cracking during use, resulting in the peeling and scattering of aggregates and other problems. The long-term performance is not good. However, these technical measures have very limited effect on improving the performance of pervious concrete. Therefore, it is urgent to develop a technology for preparing high-strength, durable and environmentally friendly permeable concrete.

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