Laboratory study on recycled concrete aggregate based asphalt mixtures for sustainable flexible pavement surfacing

Nwakaire, Chidozie Maduabuchukwu; Yap, Soon Poh; Yuen, Choon Wah; Onn, Chiu Chuen; Koting, Suhana; Babalghaith, Ali Mohammed

doi:10.1016/j.jclepro.2020.121462

Cited by 60 publications

(24 citation statements)

References 30 publications

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“…The strain values ε6 demonstrate that mixtures with RCA typically have superior fatigue performance compared with the control mixture, which is a consequence of increased bitumen content. Similar conclusions were reported by Pasandín and Pérez [30] and Nwakaire et al [24]. This kind of performance is especially evident in FC mixtures, where ε6 values were 12−26% higher than for the control mixture.…”

Section: Fatigue Resistancesupporting

confidence: 89%

The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction

et al. 2020

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The need for road (re)construction materials is constantly growing. At the same time, there is a limited quantity of new, high-quality materials available and a buildup of secondary/recycled construction materials. One possible solution may be the use of recycled concrete aggregate (RCA) in asphalt mixtures instead of natural aggregate (NA), which also promotes economic and environmental sustainability. The potential use of fine and coarse RCA in road asphalt mixtures is analyzed in this work. Nine asphalt mixtures were tested for base course layers, where RCA was used as a NA substitute. The impact of the quantity of RCA (up to 45% by mass) on the resulting physical and mechanical properties of asphalt mixtures was investigated, and consequently compared with the properties of a reference control mixture produced with NA only. Results reveal that the addition of RCA requires higher bitumen in comparison to the control mixture (up to 1%). Consequently, mixtures with RCA had 15−20% lower stiffness and up to 26% higher critical fatigue strain value (ε6). Although RCA mixtures contained more bitumen, their low-temperature resistance was slightly inferior compared with the control mixture (failure temperatures were up to 4.3 °C higher). In conclusion, asphalt mixtures with up to 45% RCA can be used without substantially reducing performance.

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Section: Fatigue Resistancesupporting

confidence: 89%

The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction

et al. 2020

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“…Steel slag has a higher specific gravity of between 3.01 and 3.67 [44][45][46][47], although coconut waste and palm oil shells have high absorption values of between 13.8 and 25% because of their porous structure [48][49][50][51][52]. The Los Angeles abrasion for the wastes ranges between 11.29 and 25.3% [44,45,[53][54][55][56][57][58][59][60], which is lower than the 55% for CBA [24]. The lower Los Angeles abrasion values indicate that the materials are tougher and more resistant to abrasion than CBA.…”

Section: Chemical Propertiesmentioning

confidence: 99%

A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

et al. 2021

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One effective method to minimize the increasing cost in the construction industry is by using coal bottom ash waste as a substitute material. The high volume of coal bottom ash waste generated each year and the improper disposal methods have raised a grave pollution concern because of the harmful impact of the waste on the environment and human health. Recycling coal bottom ash is an effective way to reduce the problems associated with its disposal. This paper reviews the current physical and chemical and utilization of coal bottom ash as a substitute material in the construction industry. The main objective of this review is to highlight the potential of recycling bottom ash in the field of civil construction. This review encourages and promotes effective recycling of coal bottom ash and identifies the vast range of coal bottom ash applications in the construction industry.

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“…(Zhou et al, 2019) Then the samples are removed from the sink and placed in a Marshall testing machine for further testing. (Nwakaire et al, 2020)…”

Section: Marshall Testingmentioning

confidence: 99%

“…Natural Aggregate is one of the main elements of asphalt mixture, base lane, and subbase of highways, airports, walkways, and parking lots. (Nwakaire et al, 2020) It is also an equally important material for Portland cement concrete mixtures used in rigid pavement construction, buildings, industrial facilities, and land structures. (Arabani & Mirabdolazimi, 2011) Aggregates and their fractions processed thus become essential industrial commodities for the construction sector.…”

Section: Introductionmentioning

confidence: 99%

Concrete Asphalt Marshall Stability Using Concrete Objective Waste

Sumargono

Candra

Ridwan

et al. 2020

scj

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The road is one of the most important infrastructures. The community needs it because the road functions to connect the source of production. Asphalt is an aggregate binding material in road pavement construction, which plays an important role in determining road pavement performance. Road Pavement, in general, uses materials that are still fairly common. This study uses a fine aggregate of crushed concrete specimens. The method used is an experiment on the addition of concrete test specimens with percentages of 10%, 20%, 30%, 40%, and 50%. Marshall method which is the basis for calculating the stability value and flow. the results of 5 Marshall test samples of asphalt concrete mix utilizing concrete waste obtained the characteristics of the average value of the study that all had met Highways' requirements at a VMA value of 18.22%, a value of 4.22 VIM.%, VFB value 75.04%, STABILITY value 4806 kg, FLOW value 3.24 mm, and Marshall Quotient (MQ) value 14958.1 kg / mm.

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Laboratory study on recycled concrete aggregate based asphalt mixtures for sustainable flexible pavement surfacing

Cited by 60 publications

References 30 publications

The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction

The Impact of Recycled Concrete Aggregate on the Stiffness, Fatigue, and Low-Temperature Performance of Asphalt Mixtures for Road Construction

A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

Concrete Asphalt Marshall Stability Using Concrete Objective Waste

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