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Method for testing liquid-plastic limits of railroad bed filling materials produced from construction wastes

A technology for construction waste and railway subgrade, which is applied in the analysis of materials, flow characteristics, material weighing, etc., can solve the problems that construction waste cannot be rationally utilized, and achieve the effects of low cost, environmental protection, and wide application range

Inactive Publication Date: 2016-07-20
刘庆国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a plasticity test method for producing railway embankment filling liquid by using construction waste to solve the technical problem that the existing construction waste cannot be rationally utilized, thereby effectively solving the problems in the above-mentioned prior art

Method used

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Embodiment

[0026] The testing method is as follows:

[0027] The first step: crushing: the construction waste is mixed and crushed by the construction waste metering mixing and crushing machine. The length of the crushed construction waste is between 15-45mm, which meets the size standard of railway subgrade filler.

[0028] Step 2: Carry out particle grading, standard compaction, liquid plasticity, particle density, crushing value, firmness, needle flake and Los Angeles abrasion tests on the crushed material;

[0029] Particle Grading:

[0030] 1) The particle gradation test can measure the mass fraction of dry soil mass of each particle group in the soil to the total mass of the soil, and it is also one of the important indicators for judging soil A, B, C and other fillers.

[0031] Among them: Group A is high-quality filler; Group B is good filler.

[0032] A group of fillers includes rocks and coarse-grained soil; the rocks are divided into stones and gravels, and the coarse-graine...

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Abstract

The invention discloses a method for testing liquid-plastic limits of railroad bed filling materials produced from construction wastes. The method comprises the following steps: a. a screening test is carried out for particle size distribution, about 200g of a sample is selected, the sample is divided into 3 parts and the three parts of soil are placed into three soil containing vessels respectively, 10ml, 20ml and 30ml of pure water are added respectively, a glass cover is used for covering, and the vessels are permitted to stand; b. a soil mixing knife is used for fully mixing the sample, the surface of a sample cup is leveled, the sample is placed on an elevating base of a liquid-plastic limit determinator, a cone is coated with a thin layer of vaseline, power is on, the elevating base is elevated, after a cone tip contacts the sample, the cone falls automatically, a sinking depth of the cone is read, and 10-20g of the sample is taken for determining the water content; c. the step a and the step b are repeated. The test method has the advantages of effective utilization of construction wastes, reduced cost, environmental protection, wide application range, simple production process without workshop construction, low cost, fully utilization of construction wastes, and environmental protection and practicality.

Description

technical field [0001] The invention relates to a method for testing the plasticity of railway subgrade filler liquid produced from construction waste, and belongs to the technical field of environmental protection building materials. Background technique [0002] At present, our country is in the peak period of housing construction, and the area of ​​new buildings completed every year is greater than the sum of the areas of new buildings completed each year in developed countries. my country's urban and rural areas currently have a total construction area of ​​40 billion square meters, and it is estimated that by 2020, an additional construction area of ​​approximately 30 billion square meters will be added. The common treatment method of construction waste in our country is to recycle a small part, and most of the construction waste is transported to the suburbs or villages without any treatment, and is stacked in the open air or landfilled. This method of processing co...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N5/00G01N11/12G01N9/00G01N17/00G01N15/00G01N3/56C04B18/16
CPCY02W30/91
Inventor 刘庆国
Owner 刘庆国