A kind of permeable mortar for sponge city and preparation method thereof

Abstract

The invention discloses permeable mortar for sponge cities and a preparation method of the permeable mortar. The permeable mortar is prepared from slag, silica fume, crushed pebbles and a reinforcingagent. The preparation method of the permeable mortar comprises the following steps: adding the modified slag, silica fume and crushed pebbles to a stirrer, performing stirring for 5-10 min firstly, then adding 1-3 parts of the activated carbon soaked by concentrated sulfuric acid for 18-24 hours, 4-6 parts of the reinforcing agent and 1-3 parts of a wetting dispersant, continuing stirring for 2-5min, then adding 3-5 parts of a silane coupling agent and a drier, continuing stirring for 10-20 min, and stirring the mixture evenly to obtain the permeable mortar. According to the prepared permeable mortar, traditional cement and water are not used, and resin is rapidly oxidized and crosslinked in air under the action of the coupling agent and is hardened.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a permeable mortar for a sponge city and a preparation method thereof. Background technique [0002] At present, with the development of the economy and the acceleration of the pace of urban modernization, most cities have experienced the lack of groundwater resources and the heat island effect. Studies have found that these problems are related to the continuous destruction of natural soil vegetation by buildings and various types of impermeable water in urban construction. It is related to the bottom surface coverage. The proportion of impermeable ground in many cities in China has exceeded 70%, which has changed the original permeability properties of the natural ground and greatly damaged the ecological environment, especially for cities with a lot of rain. If the ground is used Cement, asphalt, marble and other non-permeable materials lay the ground. When it rains...

AI Technical Summary

Problems solved by technology

[0002] At present, with the development of the economy and the acceleration of the pace of urban modernization, most cities have experienced the lack of groundwater resources and the heat island effect. Studies have found that these problems are related to the continuous destruction of natural soil vegetation by buildings and various types of impermeable water in urban construction. It is related to the bottom surface coverage. The proportion of impermeable ground in many cities in China has exceeded 70%, which has changed the original permeability properties of the natural ground and greatly damaged the ecological environment, especially for cities with a lot of rain. If the ground is used Cement, asphalt, marble and other non-permeable materials lay the ground. When it rains, the impermeable ground completely prevents the rainwater from directly penetrating into the ground. Increased the burden on urban drainage facilities, and the large loss of rainwater further aggravated the city's drought and water shortage problems