Solidified granular soil produced by utilizing waste and old materials from building project

Abstract

The invention discloses solidified granular soil produced by utilizing waste and old materials from a building project. In each 1m<3> of the solidified granular soil, the content of a soil solidifying agent is 100ml to 200ml, the content of cement or cement-mixed lime is 60kg to 160kg, the content of granule is 0.30m<3> to 0.67m<3>, and the content of soil is 0.67m<3> to 0.30m<3>; the granule is one or a mixture of several of a crushed gravel material polluted by earth, a crushed stone processed from a weathered stone, a stone material excavated from a roadbed, a crushed stone processed from a boulder, an old concrete block or an old brick residue; the soil is natural soil. The solidified granular soil provided by the invention can be used for the basic layers and the bottom basic layers of the road surfaces of a highway and an urban road, has the advantages that the project manufacturing cost is low, the construction period is short, the quality is safe and reliable, requirements on the drawing of materials are low, the materials are drawn locally, and the like; moreover, urban building litter can be utilized sufficiently; the recycling of the urban building litter is realized; the solidified granular soil is an important approach for saving land and saving resources, and is an important measure for developing circular economy and building an environment-friendly and resources-saving society.

Description

technical field [0001] The invention belongs to the technical field of pavement structure, in particular to solidified granular soil produced by using construction waste materials. Background technique [0002] In the past 30 years of reform and opening up, my country's economic construction has made great achievements, but it has been accompanied by a large amount of consumption of various resources, solid waste, and a large amount of waste water and waste gas emissions. These are all very fragile ecological conditions in our country. The environment poses a huge threat. Taking urban construction waste as an example, since the 1980s, the discharge of construction waste in my country has grown rapidly, and its composition has also undergone qualitative changes, and the proportion of recyclable components has continued to increase. According to statistics, the proportion of recyclable components produced by construction in my country is continuously increasing every year. To...

AI Technical Summary

Problems solved by technology

[0004] At present, in the existing technology of highway and urban road engineering, the conventional pavement structure base and subbase are mainly made of semi-rigid cement stabilized aggregates. The construction technology and construction technology are very mature, and are widely used in various projects. It has the advantages of high early strength, good quality stability, and high overall rigidity, but at the same time has the disadvantages of poor deformation resistance, easy to cause temperature difference and dry shrinkage cracks, and is loose. It is a brittle material; graded crushed stone is used as the base layer. The disadvantage is that there is a certain amount of water, and it cannot prevent the water in the high groundwater table area from invading the pavement structure layer and causing damage, which is extremely unfavorable for the stability of the roadbed

In addition, the existing composite solidified soil pavement base and sub-base technology is gradually being promoted. Although its technical indicators and performance are quite close to cement stabilized aggregates, it still cannot meet some high-demand engineering projects. In most highways, first-class highways, urban expressways, and urban arterial road projects, the composite solidified soil pavement base and subbase are still not allowed to be used

Images