Asphalt Concrete With Nanocarbon Bitumen

Zhurinov, M.; Teltayev, Bagdat; Kalybai, A. A.; Ye.D., Amirbayev

doi:10.32014/2020.2518-170x.71

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“…The results of our investigations have shown the possibility for the essential increase of the operational characteristics for road bitumens and asphalt concretes by their modification with carbon nanopowder [4][5][6][7][8][9][10] and polymers [11][12][13][14]. An asphalt concrete pavement with the improved operational characteristics will function efficiently only in case when layers of base and soil of subgrade are sufficiently strong.…”

Section: Complex Stabilization Of Soils and Base Course Materials During Construction And Repair Of The Highwaysmentioning

confidence: 99%

Complex Stabilization of Soils and Base Course Materials During Construction and Repair of the Highways

Teltayev¹,

Izmailova²,

Zherebitskiy³

2021

News of NAN RK. SGTS

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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.

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