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Method for comprehensive stabilization of iron tailings gravel base course through cement and soil stabilizer

A technology of soil curing agent and pavement base, which is applied in the field of fixed buildings and roads in Part E, which can solve the problems of environmental pollution of iron ore tailings and shortage of sand and gravel materials, and achieve the effect of solving the shortage of sand and gravel materials and solving environmental pollution

Inactive Publication Date: 2013-03-27
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for comprehensively stabilizing the iron tailings gravel pavement base with cement and soil curing agent, so that the pavement base can use solid waste iron tailings on a large scale, and its compaction performance and mechanical properties can meet the needs of various highways. Technical index requirements, solve the problems of environmental pollution caused by iron ore tailings and shortage of sand and gravel materials

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  • Method for comprehensive stabilization of iron tailings gravel base course through cement and soil stabilizer
  • Method for comprehensive stabilization of iron tailings gravel base course through cement and soil stabilizer
  • Method for comprehensive stabilization of iron tailings gravel base course through cement and soil stabilizer

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[0008] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0009] In this pavement base method, iron tailings sand and gravel are taken from Jianping County, Chaoyang City, Liaoning Province. The cement is 32.5 grade ordinary Portland cement, and the curing agent is ZL-2A type curing agent produced by Jilin Zhonglu New Material Co., Ltd.

[0010] Road-mixing method and concentrated plant-mixing method can be used for pavement base construction, and road-mixing method can be used for secondary roads and lower roads; construction on expressways and first-class roads must be constructed using centralized plant-mixing method. The construction process of the road mixing method is as follows: pave the iron tailings sand and gravel, use the road mixer for initial mixing 2 times, immediately spray the curing agent diluent, and then use the mixing machine to mix 2~3 times after spra...

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Abstract

A method for comprehensive stabilization of iron tailings gravel base course through cement and soil stabilizer belongs to the technical field of fixing construction roads in E part of IPC of international patent classification. The method is characterized in that according to the laboratory test, the proportion of mixture is determined as follows: the ratio of cement, iron tailings, gravel and curing agent is equal to 4:48:48:0.02, the optimum moisture content wopt is equal to 8.5%, the maximum dry density rho max is equal to 2.181g / cm<3>, and curing agent practically adopted in a construction site is increased by 0.001%; when in construction by adopting mix-in-place, the cement amount is increased by 1%; when in construction by adopting centralized plantmix, the cement amount is increased by 0.5%; when in construction, the curing agent needs to be diluted by 100 times, and the curing agent needs to be shook well so as to dissolve the precipitate completely before use. During maintenance, the relative humidity is kept between 95% and 98%, and the maintenance time is 7-10 days. The method has the beneficial effect of providing a practical base course method, gravel is replaced by iron tailings sand, so that problems of environment pollution caused by iron tailings sand and shortage of gravel are solved.

Description

technical field [0001] The invention belongs to the technical field of fixed buildings and roads in Part E of the International Patent Classification IPC, and relates to the mix ratio design of iron ore tailings gravel composite consolidation and stabilization base, specifically using soil curing agent and cement as composite consolidation materials to stabilize iron ore Tailings and natural gravel pavement base mix design. Background technique [0002] With the development of the construction industry and the highway industry, the demand for sand and gravel materials is increasing, resulting in a shortage of sand and gravel resources; The living environment of the country has been seriously threatened. These two aspects have made the original traditional road material shortage more prominent. It is imperative to seek new materials to replace traditional road materials. Contents of the invention [0003] The purpose of the present invention is to provide a method for comp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 潘宝峰陈士忠时正武
Owner DALIAN UNIV OF TECH
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