ДОСЛІДЖЕННЯ ЕФЕКТИВНОСТІ ВИКОРИСТАННЯ СТАБІЛІЗАТОРІВ ДЛЯ УКРІПЛЕННЯ ҐРУНТІВ

Abstract

Introduction. One of the main causes of deformation on roads is the deconsolidation of soils of the working layer of the subgrade and the non-strengthened lower layers of road structures. To eliminate this problem the technology of soil strengthening is used. Soil strengthened by the binder is an artificial monolithic material, which is formed by hardening the soil, after treatment with the binder, due to the physical and/or chemical processes after compaction and curing under specified conditions, and satisfies the standard requirements for physical and technical indicators in the project intermediate terms. Soil mass stabilizer is a modifier of the soil particles surface, which affects the value of the hydrogen index in which the soil structure is formed, improves the physical and mechanical properties of the soil. Problem statement. During road construction and repairing, the problem of unsatisfactory bearing capacity of subgrade appears quite often. For rational solving of this problem, the possibility of strengthening or stabilizing the soil is considered. Purpose. The purpose of the work is the analysis of laboratory tests data and determination of the effectiveness of soil stabilizers use. Materials and method. Analysis of information sources on foreign and domestic experience of soil stabilizers use. Results. The result of the work is established physical and mechanical properties of the soil with and without the use of stabilizer. Conclusions. When using soil stabilizers, the key to the effective use of capital investments in the construction or reconstruction of roads by increasing the strength of the road structure we see in a clear understanding of the functional orientation of the additive, the choice of appropriate technology, the selection of the optimal mix design and type of stabilizer. The research carried out at the State Enterprise «DerzhdorNDI» on the expediency of using a polymer-based stabilizer for the complex strengthening of sandy loam to increase the strength of the embankment base soil found that the obtained proportions of additive and cement have achieved a positive result.