A kind of high-strength slow-setting plant-growing concrete and its preparation method

Abstract

The invention discloses a high-strength slow-setting type plant-growing concrete. The raw materials used in the concrete include: 71-85 parts of gravel, 10-18 parts of cement, 1.1-2.4 parts of pumice powder, 2.15-4.45 parts of water, and a water reducer 0.15-0.24 parts, 0.005-0.04 parts of graphene oxide powder, 10-15 parts of concentrated sulfuric acid, 0.01-0.03 parts of sodium lignosulfonate. In the present invention, graphene oxide can significantly improve the strength of the fast-hardening and early-strength type sulphoaluminate cement matrix, which can ensure that the planting concrete has enough pores for plant growth; in the present invention, the S-GO polycarboxylic acid admixture can improve the fast-hardening and early-strength sulfoaluminate cement matrix. The fluidity of hard early-strength type sulphoaluminate cement and the effect of prolonging the setting time of fast-hardening and early-strength type sulphoaluminate cement; the pozzolanic effect of pumice powder in the present invention can improve the intensity of planting concrete, and more consumption of concrete Alkaline substances, thereby reducing the alkalinity of plant-growing concrete is conducive to plant growth.

Description

technical field [0001] The invention relates to the technical field of plant-growing concrete, in particular to a high-strength slow-setting plant-growing concrete and a preparation method thereof. Background technique [0002] The construction of infrastructure and the irrational development of natural resources have caused more and more environmental damage, resulting in the generation of a large number of secondary bare slopes. After being washed away by rainwater, a large amount of water and soil resources are lost, and even natural disasters such as landslides and mudslides are caused. endanger human survival and development. With the progress of society and the support of national policies, people's investment in environmental protection has gradually increased. In this environment, planting concrete slope protection technology came into being. [0003] Plant-growing concrete is an environmentally friendly material with a porous structure. Plants are planted on the s...

AI Technical Summary

Problems solved by technology

Soil-retaining slope protection requires planting concrete to have a certain strength and durability, but the strength and porosity of planting concrete are almost a contradiction, and it is difficult to balance the two

It is suitable for plant growth and requires the use of cementitious materials with low alkalinity in the process of preparing concrete. At present, the rapid hardening and early strength sulphoaluminate cement can meet the requirements of low alkalinity, but at the same time, the cement has the characteristics of rapid hardening and early strength. Generally, the initial setting time is usually within ten minutes. In order to ensure normal construction, setting-adjusting materials will be added in the process of preparing concrete. However, the currently-applied setting-adjusting materials have no significant setting-adjusting effect and will affect the strength and durability of concrete. It is difficult to guarantee the construction quality in practical engineering applications