Utilization of Plastic Wastes for Improving the Sub-Grades  in Flexible Pavements

Choudhary, Anil K.; Jha, J. N.; Gill, K. S.

doi:10.1061/41104(377)39

Cited by 27 publications

(11 citation statements)

References 3 publications

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“…Benson and Khire [7] researched on the usage of HDPE as a reinforcement material for sand and reported that improvement in terms of bearing capacity, stiffness, resilient and shear properties of the sand through geotechnical tests. Choudhari et al [8] and Choudhari et al [9] reported that improvement in geotechnical properties of pavement base, subbase and subgrade layers could be attained by using HDPE in the form of strips. Improvement of flexible pavement material in terms of bearing capacity by introducing HDPE strips was also reported by Jha et al [10].…”

Section: Introductionmentioning

confidence: 99%

Recycled plastic granules and demolition wastes as construction materials: Resilient moduli and strength characteristics

Arulrajah

Yaghoubi

Wong

et al. 2017

Construction and Building Materials

104

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Vast quantities of plastic and demolition wastes are generated annually by municipal and commercial industries in all developed and developing countries. The sustainable usage of recycled plastic and demolition wastes as alternative construction materials has numerous environmental and economic advantages. New opportunities to recycle plastic and demolition wastes into alternative resource materials for construction industries, would mitigate landfill issues and significantly reduce global carbon emissions. Infrastructure projects typically consume significant quantities of virgin quarry materials, hence the usage of plastic and demolition wastes as alternative construction materials will divert significant quantities of these wastes from landfills. In this research, three types of recycled plastic waste granules: Linear Low Density Polyethylene filled with Calcium Carbonate (LDCAL), High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) were evaluated in blends with Crushed Brick (CB) and Reclaimed Asphalt Pavement (RAP). The blends prepared were evaluated in terms of strength, stiffness and resilient moduli. Resilient moduli prediction models were proposed using Repeated Load Triaxial (RLT) tests to characterize the stiffness properties of the plastic/demolition waste blends. Polyethylene plastic granules with up to 5% content were found to be suitable as a road construction material, when blended in supplementary amounts with demolition wastes. This research is significant, as the usage of plastics as a construction material, in combination with demolition wastes will expedite the adoption of recycled by-products by construction industries.

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Section: Introductionmentioning

confidence: 99%

Recycled plastic granules and demolition wastes as construction materials: Resilient moduli and strength characteristics

Arulrajah

Yaghoubi

Wong

et al. 2017

Construction and Building Materials

104

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“…Reinforcement was shown to improve the California Bearing Ratio (CBR), secant modulus, resilient modulus and shear strength of the sand. Studies have been undertaken on using HDPE in form of strips as reinforcement for pavement material in the subbase layer (Choudhary et al 2014) and subgrades (Choudhary et al 2010). Test results showed improvement in some of the geotechnical properties, such as bearing capacity and secant modulus of the specimens reinforced by HDPE strips.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Properties of Recycled Concrete Aggregate with Polyethylene Plastic Granules in Unbound Pavement Applications

Yaghoubi

Arulrajah

Wong

et al. 2017

J. Mater. Civ. Eng.

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The growing population in the modern world has resulted in an increase in waste generation and stockpiles. There have been increasing concerns on how to sustainably reuse wastes in civil and geotechnical engineering applications. Two major municipal waste streams are plastic wastes and Recycled Concrete Aggregates (RCA) generated by demolition activities. A potential application for growing stockpiles of plastic and RCA wastes is in the construction of roads, as pavement base/subbases typically demand significant quantities of construction materials. In this research, RCA was blended with Low Density Polyethylene (LDPE) and High Density Polyethylene (HDPE) plastics. A range of geotechnical tests such as California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS), and Repeated Load Triaxial (RLT) tests were conducted on RCA/HDPE and RCA/LDPE blends. Comparison of CBR, UCS and RLT results with those of typical quarry materials indicated that RCA/HDPE and RCA/LDPE can be used sustainably in the construction of pavement base/subbase layers. RLT testing results were further evaluated using resilient moduli models, to characterize the RCA/HDPE and RCA/LDPE performances under simulated traffic loads.

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“…An optimum HDPE rate was about 5% for higher acceptable performance and reduced cost of HMA [25]. HDPE revealed better properties of subgrade when added at 0.25% [26]. Incorporating plastic up to 25% resulted in enhanced HMA performance in terms of stability, skidding, deformation resistance, fatigue, and no defects observed [27].…”

Section: Plastic Wastesmentioning

confidence: 98%

Mining Operations in Construction of Main Transport Routes

2020

Mining Industry

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Research objective: analysis of waste disposal issues in the mining and mineral processing industry of the Russian Federation. Research methodology: economic and environmental challenges concerned with mining and mineral processing waste in dumps and tailings were analysed. Results: an option is proposed to dispose of the waste rock generated by the mining and processing industry by using it for construction of railways and motor roads. This technology makes it possible to avoid construction of quarries and temporary settlements for their development along the road route, which will decrease the environmental impact and significantly reduce the time and cost of road construction. Conclusions: The proposed technology helps to achieve a significant economic effect (no costs for transporting materials from remote areas of the country), reduce the adverse environmental impact of mining operations and, in the long term, prevent dump formation.

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Utilization of Plastic Wastes for Improving the Sub-Grades in Flexible Pavements

Cited by 27 publications

References 3 publications

Recycled plastic granules and demolition wastes as construction materials: Resilient moduli and strength characteristics

Recycled plastic granules and demolition wastes as construction materials: Resilient moduli and strength characteristics

Stiffness Properties of Recycled Concrete Aggregate with Polyethylene Plastic Granules in Unbound Pavement Applications

Mining Operations in Construction of Main Transport Routes

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