Formula of modifier for road engineering fill

A modifier and formula technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of large shrinkage cracking and slow strength formation, and achieve shrinkage cracking reduction, good social benefits and environmental protection benefit effect

Inactive Publication Date: 2008-09-03
江苏省常州市航道管理处 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of slow strength formation or large shrinkage and cracking of traditional materials, and provide roadbed materials with good comprehensive performance

Method used

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  • Formula of modifier for road engineering fill
  • Formula of modifier for road engineering fill
  • Formula of modifier for road engineering fill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The content of cement is 16%, the content of alkali slag is 18%, and the content of waste concrete particles is 66%. Add 25% into the non-applicable soil, add water and mix to the optimum moisture content, mix evenly, and compact when required. The 7-day unconfined compressive strength and bearing ratio reached 0.41Mpa and 127% respectively; while the 7-day unconfined compressive strength and bearing ratio of cement-modified soil with the same cement content (4% cement) 0.20Mpa and 60%; the 7-day unconfined compressive strength and load-carrying ratio of lime-modified soil with 4% lime are less than 0.08Mpa and 30% respectively.

Embodiment 2

[0026] The cement content is 16%, the alkali slag content is 8%, and the waste concrete particle content is 76%. Add 25% of the mixing amount to the non-applicable soil, add water and mix to the optimum moisture content, mix evenly, and compact when required. The 7-day unconfined compressive strength and bearing ratio reached 0.35Mpa and 110% respectively; while the 7-day unconfined compressive strength and bearing ratio of cement-modified soil with the same cement content (4% cement) 0.20Mpa and 60%; the 7-day unconfined compressive strength and load-carrying ratio of lime-modified soil with 4% lime are less than 0.08Mpa and 30% respectively.

Embodiment 3

[0028] The content of cement is 10%, the content of alkali slag is 10%, and the content of waste concrete particles is 80%. Add 25% of the mixing amount to the non-applicable soil, add water and mix to the optimum moisture content, mix evenly, and compact when required. The 7-day unconfined compressive strength and bearing ratio reached 0.28Mpa and 98% respectively; while the 7-day unconfined compressive strength and bearing ratio of cement-modified soil with the same cement content (2.5% cement) 0.14Mpa and 40%; the 7-day unconfined compressive strength and bearing ratio of lime-modified soil with 2.5% lime are less than 0.05Mpa and 25% respectively.

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Abstract

A highway project filling modifier formula is characterized in that the weight percentage of formula ingredients is: 8%-16% of silicate cement; 8%-18% of waster alkaline residue from the ammonia-soda production process and 70%-84% of abandoned concrete. The invention uses waster alkaline residue and abandoned concrete as the modifier components while using low doses of cement at the same time so that utilizing not only the cement strength formed by hydration solidification, but also the improved comprehensive strength formed in alkaline residue reacting with soil composition and cement and utilizing the waste concrete to provide a skeleton and reducing shrinkage cracking of the modified soil.

Description

1. Technical field [0001] The invention belongs to a chemical composition modifying agent, in particular to a modifying agent formula for modifying non-applicable soil as road filling soil. 2. Background technology [0002] Existing technology: the development of the transportation industry requires a large amount of earthwork. At present, the applicable soil mainly comes from the cultivated land along the road, resulting in the reduction of good farmland and environmental damage. Therefore, the patent uses non-applicable soil (silty soil, silty soil, etc.) as the road base Filling soil can solve the contradiction between traffic construction and land resource shortage, realize the comprehensive utilization of earthwork, and at the same time turn harm into benefit, turn waste into wealth, realize resource utilization of non-suitable soil, and protect the environment. [0003] At present, the main method for non-applicable earthwork of muddy and silty soil is to add cement or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16
CPCY02W30/91
Inventor 解建光刘文荣虞国俊黄永铭季小明耿飞袁劲华计梁焦振寿徐贤明仲曙豪曹兴国杨朝旭
Owner 江苏省常州市航道管理处
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