КОМПЛЕКСНАЯ СТАБИЛИЗАЦИЯ ГРУНТОВ И МАТЕРИАЛОВ ОСНОВАНИЯ ПРИ СТРОИТЕЛЬСТВЕ И РЕМОНТЕ АВТОМОБИЛЬНЫХ ДОРОГ

Abstract

The article represents the results for investigation of a new technology of complex soil consolidation and stabilization and reuse of the material from stripping of the existing roads (cold recycling technology) with portlandcement and enzyme agent Roadzyme (USA), which allows reducing the energy costs significantly and improving ecological situation. Cold recycling has a number of significant advantages before other means of reconstruction. The absence of environmental pollution is due to the complete use of the material of the old pavement. There is no need in disposal sites, and the volume of the new delivered materials is the minimum one and reduces the area of contamination, which is certain during opening of new borrow-pits and rock quarries. Transportation is very small, therefore the consumption of the energy is considerably reduced, as well as devastating impact of vehicles on the road network. Effect of the use of the agent “Roadzyme” is based on the activation of physics and chemical processes, which increase the strength, water resistance and frost resistance of the consolidated soils and materials, reducing material consumption at provision of the required elasticity modulus for pavement structure due to reduction of the thickness for pavement layers, the use of local materials and saving of binders and inert materials. The decrease is noted for the stiffness of the materials, strengthened by complex method (binder with the agent “Roadzyme”), compared to the treatment only with the binder, which allows forecasting the increase of the crack resistance.