Black soil gravel material modified cement stabilized soil suitable for roadbeds in West African regions and preparation method of black soil gravel material modified cement stabilized soil

Abstract

The invention relates to cement stabilized soil and a preparation method thereof, in particular to black soil gravel material modified cement stabilized soil suitable for roadbeds in West African regions and a preparation method of the black soil gravel material modified cement stabilized soil. The invention aims to solve the problems of poor stability, low bearing capacity and lack of suitable roadbed filling materials in the existing roadbed constructed by adopting a gravel direct filling mode in the West African region. The black soil gravel material modified cement stabilized soil suitable for the roadbed in the West African region is prepared from the following components in parts by weight: black soil gravel materials, plastic-free sand, cement and water. The method comprises the following steps: 1, weighing; 2, preparing a black soil gravel material/plastic-free sand mixture; 3, infiltrating; 4, preparing a preformed mixture; 5, forming the test piece; 6, pressurizing; and 7, maintaining. The black soil gravel material modified cement stabilized soil suitable for the roadbed in the West African region, which is prepared by the invention, meets the embankment filling strength requirement ''highway roadbed design specification'' (JTG D30-2015).

Description

technical field [0001] The invention relates to a cement stabilized soil and a preparation method thereof. Background technique [0002] Cement stabilized soil belongs to the inorganic binder stabilized mixture in road engineering materials. It refers to mixing a certain amount of cement and water into the original loose or crushed soil, and the mixture obtained after mixing is compacted and maintained. Finally, a board structure with a certain strength is formed. Cement-stabilized soil has strong integrity, large stability and bearing capacity, and a wide range of applications. It is often used in the base, sub-base or cushion of roads at all levels. Using this structure in large quantities is an effective way to reduce project costs. [0003] Senegal and other African countries have a tropical climate, high temperature, drought, and harsh natural environment. Due to the limitations of geographical conditions, geological conditions, local materials, climate environment, an...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor stability, low bearing capacity and lack of suitable roadbed filling materials in the roadbed built by direct gravel filling in the existing West African region, and to provide a black soil gravel suitable for the roadbed in the West African region. Material modified cement stabilized soil and preparation method thereof

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