TN931 : The use of nanoparticles and inorganic materials to improve the engineering properties of soil of mine haul roads
Thesis > Central Library of Shahrood University > Mining, Petroleum & Geophysics Engineering > MSc > 2019
Authors:
Mahdi Salehabadi [Author], Farhang Sereshki[Supervisor], Mohammad Karamoozian[Supervisor], Mirhosein Shahami [Advisor]
Abstarct: Dust emissions from mining activities and their impact on the surrounding environment have been and remain one of the major environmental impacts associated with surface mining. Dust emissions caused by the transportation of mined material on surface mines are the most significant contributor. Dust emissions not only have a negative environmental impact, but also impact on vehicle maintenance and operating costs, and can affect the health of the surrounding communities. Generally, in the mines to overcome the problem of conventional spray water route is used. This method creates environmental problems and actions, including taking too much water, low efficiency in regions hot and dry, the high cost of water supply in many areas (especially considering the spiritual value of it), mental disruption of the soil, creating traffic due process water spray, spray water devices and ramps placed maintenance costs. Today, soil stabilization is one of methods that experts by scientific principles and technology used suitable materials for reinforcement soil, and improvement engineering-mechanical characteristics such as, resistance, hardship, Plasticity and bearing capacity of soil. In this study is that the effects of three additives, including sugar beet molasses, lignosulfonate calcium montmorillonite nanoclay and soil resistance on improving the physical parameters of the mine ramps cement Abyek Qazvin investigated. baxsed on the Compaction test, Atterberg limits test, compressive strength test, direct shear test as Reagents for soils containing certain additives was carried out with weights done. Addition of sugar beet molasses in both soils reduced the optimum moisture content up to 11.6% and increased the Maximum dry density of 1.955 gr⁄cm^3 for AB01 soil, and 1.942 gr⁄cm^3 for AB02 soil. Addition of calcium lignosulfonate reduced the optimum moisture content for AB01 soil to 11.8% and for AB02 soil to 12% Also, Maximum dry density gain was 1.939 gr⁄cm^3 for AB01 soil, and 1.914 gr⁄cm^3 for soil AB02. The addition of montmorillonite nanoclay increased the optimum moisture content up to 13.7% for AB01 soil and for AB02 soil up to 14.3% as well as the increase in Maximum dry densityof 1.958 gr⁄cm^3 for AB01 soil, 1.947 gr⁄cm^3 Obtained for soil AB02. Finally, the best results were obtained by Compaction test, compressive strength test, direct shear test, addition of 1.5% calcium lignosulfonate for soil AB01 and 2% molasses for soil AB02.
Keywords:
#dust suppressants #open-pit mine #road dust #unpaved roads #dust palliative #dust haulage roads #calcium lignosulfonate #montmorillonite nanoclay #sugar beet molasses #compressive strength test #direct shear test #Compaction test Link
Keeping place: Central Library of Shahrood University
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