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Universidad Privada del Norte, Facultad de Ingeniería , Lima , Peru
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Universidad Privada del Norte, Facultad de Ingeniería , Lima , Peru
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Grupo de Investigación Desarrollo e Innovación UPN -IDIUPN, Universidad Privada del Norte, Facultad de Ingeniería , Lima , Peru
Grupo de Investigación Desarrollo e Innovación UPN -IDIUPN, Universidad Privada del Norte, Facultad de Ingeniería , Lima , Peru
This research examines how asphalt mixtures that are modified with Zycotherm can help the mixtures have an enhanced resistance to damage caused by moisture which has not been well researched in previous studies. Hydraulic deterioration of asphalt and in particular the clay soils contribute greatly to the strength and lifespan of the road surfaces. This study aimed at examining the influence of moisture on the physical-mechanical properties of Zycotherm-modified asphalt mixtures. The performance of the modified mixtures was tested by experimental tests, Indirect Tensile Strength (ITS), Resilient Modulus, Fracture Energy, Fracture Energy Ratio and Tensile Strength. Other tests such as Resilient Modulus Radius and Multiple Voltage Creep Recovery were also used to test the behaviour of the asphalt on moisture stress. The Scanning Electron Microscopy (SEM) analysis was used in order to find out the optimal percentage of Zycotherm based on three nominal maximum aggregate sizes (9.5 mm, 12.5 mm and 19 mm). 25 selected scientific articles were used and this guaranteed the relevance and reliability of the data. The findings showed that Zycotherm remarkably increased moisture resistance of asphalt mixtures. It is worth noting that mixtures of 0.1% Zycotherm with 0.3% Evonik recorded 15% and 9% rise in resilient modulus and tensile strength respectively. The experiment helped to validate that 0.1 % Zycotherm was the best dosage which enhanced the physical-mechanical properties of asphalt. To sum up, Zycotherm is a useful additive to augment the resistance of the asphalt mixtures to the deterioration caused by moisture, particularly in clayey soils. Future research should include the performance of Zycotherm in long term fields and also examine the synergistic action of Zycotherm with other additives so as to optimize the performance of this additive.
This is an open access article distributed under the Creative Commons Attribution Non-Commercial License (CC BY-NC) License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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