Use method of industrial caustic dross in treatment of road bed and foundation

An application method and grass-roots treatment technology, applied in the direction of roads, roads, buildings, etc., can solve problems such as hindering urban development, occupying land, and having a large impact on the urban environment, so as to reduce the pressure on land resources, reduce project costs, and eliminate pollution.

Inactive Publication Date: 2007-05-16
TIANJIN MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of alkali slag causes the soil around the site to be eroded by salinization. At the same time, the dust of alkali slag spreads to the surroundings, which has a great impact on the urban environment. Moreover, alkali slag occupies a large amount of land, which not only affects the ecological landscape of the area, but also affects and hinders the urban environment. Development, construction and economic development of the city

Method used

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  • Use method of industrial caustic dross in treatment of road bed and foundation

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Prepare materials, including alkali slag, brick slag, fly ash, cement or lime, and soil; dry and crush the alkali slag and site soil; then, through indoor heavy-duty compaction tests, determine the optimum water content of the mixture to be 17-24 %, the maximum dry density is 1.79~2.08×10 3 kg / m 3 ; prepare the shallow treatment lower layer soil, its composition includes by weight percentage: 31% alkali slag, 65% soil, 4% lime; prepare shallow treatment upper layer soil, its composition includes by weight percentage: 30% Soda slag, 63% of soil, 4% of lime, 3% of cement; prepare subbase and base course, and its composition includes: 30% of soda slag, 10% of cement, 30% of fly ash in weight percentage , 30% brick slag, mix each layer of soil evenly according to the determined ratio, measure the natural water content to be 14.2-19%, and determine the spraying water amount to be 53.2-95kg according to the difference between the optimum water content and the natural water c...

Embodiment 2

[0023] Prepare materials, including alkali slag, brick slag, fly ash, cement or lime, and soil; dry and crush the alkali slag and site soil; then, through indoor heavy-duty compaction tests, determine the optimum water content of the mixture to be 18-22 %, the maximum dry density is 1.75~1.96×10 3 kg / m 3 ; prepare the shallow treatment lower layer soil, its composition includes by weight percentage: 40% alkali slag, 55% soil, 5% lime; prepare shallow treatment upper layer soil, its composition includes by weight percentage: 38% Soda slag, 55% of soil, 5% of lime, 2% of cement; prepare the base course and base course, and its composition includes: 42% of soda slag, 8% of cement, 25% of fly ash in weight percentage , 25% brick slag, mix each layer of soil evenly according to the determined ratio, measure the natural water content to be 15.6-19.8%, and determine the spraying water amount to be 41.8-45.6% based on the difference between the optimum water content and the natural w...

Embodiment 3

[0025] Prepare materials, including alkali slag, brick slag, fly ash, cement or lime, and soil; dry and crush the alkali slag and site soil; then, through indoor heavy-duty compaction tests, determine the optimum water content of the mixture to be 17-22 %, the maximum dry density is 1.73~1.98×10 3 kg / m 3 ; Prepare shallow subsoil, its composition includes: 45% alkali slag, 50% soil, 5% lime in weight percentage; Prepare shallow upper layer soil, its composition includes in weight percentage: 45% alkali slag , 45% of soil, 8% of lime, 2% of cement; prepare subbase, base, its composition comprises respectively by weight percentage: 35% of alkali slag, 5% of cement, 25% of fly ash, 35% % of brick slag, mix each layer of soil according to the determined ratio, measure the natural water content as 14.8-19.1%, and determine the spraying water amount as 41.8-55.1kg / m 3 , to make it reach the optimum water content; pave and roll on site, control the compaction degree of the shallo...

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Abstract

The invention an application of applying the industrial alkaline residue to dealing the road subgrade and basal layer, the method includes the following steps: materials preparation; sun-curing and disintegrating the alkaline residue and the on-site soil; determining the best moisture capacity and the maximum dry density of mixture; mixing the layers of the soil according the predetermined ratio uniform and spraying water to reaching the optimum water content; paving and rolling on the spot, the compression of subgrade shallow layer is controlled above 97% and the compression of sub-subbase course and the subbase course are controlled more than 98%; after every layers are rolled, lying a layer of mixture after watering seven days and reaching the design strength requirements. The method applies the alkaline residue to road engineering, because it makes use of industrial residue comprehensively, it reduces the land occupied by alkaline residue, eliminates the environmental pollution cause by alkaline residue, meanwhile the alkaline residue replaces a lot of roadbed and packing materials, so it reduces the construction costs of municipal works and roads and reduces the territorial resources pressure caused by digging out cultivated land.

Description

technical field [0001] The invention relates to an industrial alkali slag, in particular to an application method of the industrial alkali slag in the treatment of road subgrades and grass roots. Background technique [0002] Soda slag is the white solid waste produced by the alkali factory using the ammonia-soda method to produce soda ash. At present, the ammonia-soda method is mostly used in the production of soda ash in my country, and its output accounts for more than 60% of the total output of soda ash, thus producing a large amount of alkali slag. Stacking occupies a large amount of land, and at the same time, the alkali slag dust spreads to the surroundings, which has a great impact on the surrounding environment. Large-scale alkali slag will bring huge social and environmental protection problems. Storage requires a large amount of land. Discarding wastes resources and pollutes the environment. Recycling and utilization of this renewable resource has attracted great a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00
Inventor 赵建伟王新岐王晓华李长升邱志明于立军贺海冯炜刘润有李婧付晓敦练象平任金霞刘铁柱付向东胡军任翠青徐京阔宋杰
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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