Geopolymer concrete paving blocks made with Recycled Asphalt Pavement (RAP) aggregates towards sustainable urban mobility development

Hossiney, Nabil; Sepuri, Hima Kiran; Mohan, Mothi Krishna; K, Sarath Chandra; Kumar, Srinidhi Lakshmish; Thejas, H K

doi:10.1080/23311916.2020.1824572

Cited by 21 publications

(6 citation statements)

References 32 publications

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“…Precursor materials used for preparation of alkali-activated concrete was fly ash (FLA) and ground granulated blast furnace slag (GGBS). Table 1 presents the physical and chemical properties of precursor materials which comply with previous published study (Hossiney et al, 2020a, Hossiney et al, 2020b. Alkaline solution was prepared by mixing NaOH solution and Na 2 SiO 3 solution.…”

Section: Methodsmentioning

confidence: 97%

Properties of alkali-activated concrete (AAC) incorporating demolished building waste (DBW) as aggregates

et al. 2021

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Section: Methodsmentioning

confidence: 97%

Properties of alkali-activated concrete (AAC) incorporating demolished building waste (DBW) as aggregates

et al. 2021

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“…Studies into the knowledge and application of CDW are ongoing, mainly in AC, CPB, and the pavement's base layer [15,16,[60][61][62][63]. Furthermore, various waste plastics such as polyethylene terephthalate (PET) and low-density polyethylene (LDPE), can be used as an alternative to replace aggregates.…”

Section: Influence Of Fibers and Recycled Materials From Civil Constr...mentioning

confidence: 99%

“…Concerning alternative materials, in general, the by-products of some industries can be used to manufacture CPBs. Examples are recycled asphalt pavement (RAP), recycled concrete aggregates (RCAs)-both classified as construction and demolition waste (CDW), and coconut fibers [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Interlocking Concrete Block Pavement with By-Products and Comparison with an Asphalt Pavement: A Review

et al. 2023

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This paper aims to review the performance analysis of interlocking concrete block pavement with by-products such as coconut fibers, and construction and demolition recycled materials, and to compare their skills with asphalt pavement, especially for light-traffic urban road applications. The focus is on mechanical behavior (mix parameters and the influence of by-products), pavement design, sustainability (the heat island effect), the management of contaminant concentrations within infiltration related to permeability, and Life Cycle Assessment. Considering the overall performance analysis, interlocking concrete block pavement was the most attractive alternative because it was approximately 33–44% cheaper in the maintenance process, cooler over a range of 2.2–15 °C, and more permeable by 0.4 cm/s to 0.6 cm/s than asphalt pavement, saving costs and improving drainage and human thermal comfort. However, asphalt pavement was around 35% cheaper during the construction phase (mainly due to energy consumption), and it presented a 32% lower nitrogen oxide concentration. This paper showed the advantages and disadvantages of both types of pavements. A further breakdown should be developed and integrated into the decision-making process about choosing between solutions.

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“…Henceforth, the utilization of 100% RAP recycled aggregates is typically not advised due to their subpar performance when it is compared to either natural coarse or fine aggregates in concrete mixes [ 42 ]. So, several researchers recommended 40–50% of replacement of RAP aggregates in concrete mixes to achieve the benchmark of strength for the production of RAP concrete [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. With the considerations of statistical analysis, mathematical modelling gives a high confidence level to predict the strength of concrete.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Reclaimed Asphalt Pavements (RAP) as Recycled Aggregates Used in Rigid Pavement Construction

et al. 2023

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Reclaimed Asphalt Pavement (RAP) as recycled aggregates is a relatively new construction process of rigid pavements due to the scarcity and degradation of natural aggregates. This study aims at the sequential characterization of RAP aggregate to obtain optimized proportions for strength. For this purpose, RAP aggregates were used for the replacement of natural aggregates (NA) in the concrete mix which was achieved by varying from 0–100%. Furthermore, zirconia silica fume (ZSF) was used as a partial replacement of the cement in the concrete mix, replacing Ordinary Portland Cement (OPC). Experimental studies have shown that the incorporation of washed RAP (WRAP) slightly reduces the compressive strength of concrete by 2.7–37.35% as compared to the reference control concrete mix. Although the 7-days, 28-days and 56-day compressive strength of WRAP recycled aggregate-based concrete is slightly better than the 7-days, 28-days and 56-day compressive strength of dirty RAP (DRAP) recycled aggregate-based concrete. A similar trend was observed in the flexural strength and split tensile strength of WRAP recycled aggregate-based. Overall, the results show that 40% WRAP recycled aggregates with 10% ZSF as a replacement for cement outperform DRAP aggregates in concrete mixes. According to the ANOVA results, the combination of ZSF and WRAP aggregates met the cement concrete pavement strength standard, thereby contributing to sustainable development. Reclaimed Asphalt Concrete Pavements (RACP) are now seen as a potential and long-term answer to the present environmental and economic crisis.

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Geopolymer concrete paving blocks made with Recycled Asphalt Pavement (RAP) aggregates towards sustainable urban mobility development

Cited by 21 publications

References 32 publications

Properties of alkali-activated concrete (AAC) incorporating demolished building waste (DBW) as aggregates

Properties of alkali-activated concrete (AAC) incorporating demolished building waste (DBW) as aggregates

Assessment of Interlocking Concrete Block Pavement with By-Products and Comparison with an Asphalt Pavement: A Review

Feasibility Study of Reclaimed Asphalt Pavements (RAP) as Recycled Aggregates Used in Rigid Pavement Construction

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