A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stabilization of cement-treated base mixes incorporating high reclaimed asphalt pavement materials using stabilizer rich in SiO2 and Al2O3
Highlights Utilization of high reclaimed asphalt pavement materials instead of natural aggregate is a sustainable approach for CTB. Old RAP material can be used upto 70% in CTB mixes. Satisfactory performance in terms of strength and durability by RAP mixes. Higher amount of RAP material decreases the UCS of CTB mix.
Abstract Using RAP material can be one of the promising solutions for solving the new material issues, reducing haulage distance and fuel cost to a great extent as the complete process is done at site only using the Full-depth reclamation (FDR) technique. However, the effect of the high amount of RAP material with stabilizer has not been completely understood for constructing the CTB layer. In the present study, a mixed design of the CTB layer has been formulated considering the requirements of Indian Specifications to utilize maximum RAP material in a sustainable approach. Mechanical and durability properties of CTB mix were evaluated to identify the effect of different cement, stabilizers, and RAP aggregates on the laboratory mixtures. The efficacy of stabilizer with cement was examined to judge the suitability of the same as potential pavement construction materials. The optimal mix was decided mainly based on the Unconfined Compressive Strength (UCS) value and flexural strength of aggregate specimen at 7-days of moist curing. However, for a detailed study, UCS values were checked at three days, seven days, and 28 days. Also, the durability properties of the CTB mix were analyzed by performing a durability test, sorptivity, and rapid chloride penetration test (RCPT). Present laboratory studies firmly indicated that using a stabilizer with cement using 70 % RAP leads to a strong and durable CTB mix.
Stabilization of cement-treated base mixes incorporating high reclaimed asphalt pavement materials using stabilizer rich in SiO2 and Al2O3
Highlights Utilization of high reclaimed asphalt pavement materials instead of natural aggregate is a sustainable approach for CTB. Old RAP material can be used upto 70% in CTB mixes. Satisfactory performance in terms of strength and durability by RAP mixes. Higher amount of RAP material decreases the UCS of CTB mix.
Abstract Using RAP material can be one of the promising solutions for solving the new material issues, reducing haulage distance and fuel cost to a great extent as the complete process is done at site only using the Full-depth reclamation (FDR) technique. However, the effect of the high amount of RAP material with stabilizer has not been completely understood for constructing the CTB layer. In the present study, a mixed design of the CTB layer has been formulated considering the requirements of Indian Specifications to utilize maximum RAP material in a sustainable approach. Mechanical and durability properties of CTB mix were evaluated to identify the effect of different cement, stabilizers, and RAP aggregates on the laboratory mixtures. The efficacy of stabilizer with cement was examined to judge the suitability of the same as potential pavement construction materials. The optimal mix was decided mainly based on the Unconfined Compressive Strength (UCS) value and flexural strength of aggregate specimen at 7-days of moist curing. However, for a detailed study, UCS values were checked at three days, seven days, and 28 days. Also, the durability properties of the CTB mix were analyzed by performing a durability test, sorptivity, and rapid chloride penetration test (RCPT). Present laboratory studies firmly indicated that using a stabilizer with cement using 70 % RAP leads to a strong and durable CTB mix.
Stabilization of cement-treated base mixes incorporating high reclaimed asphalt pavement materials using stabilizer rich in SiO2 and Al2O3
Chhabra, Rishi Singh (author) / Ransinchung Rongmei Naga, Gondaimei (author)
2022-12-13
Article (Journal)
Electronic Resource
English
Durability , RAP , Wastes , Strength , Sustainability
Evaluation of Asphalt Mixes Containing Reclaimed Asphalt Pavement
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Improved Performance of Reclaimed Asphalt Pavement Mixes
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