Strength and permeation characteristics of cement mortar with Reclaimed Asphalt Pavement Aggregates

Abraham, Sarah Mariam; Ransinchung, G.D.

doi:10.1016/j.conbuildmat.2018.02.075

Cited by 46 publications

(16 citation statements)

References 29 publications

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“…The 7 and 28-days CS decreased by 36.1 and 44.3%, relative to the control mix, respectively, at 50% RAP content. This is consistent with the results found in previous studies [23,28,29]. The reduction in CS might be attributed to the collective effect of higher porosity and asphalt cohesion failure, which occurs instead of the adhesive failure of the cement-asphalt interface or cohesive failure of the ITZ [26,27].…”

Section: Hardened Properties Of Concretesupporting

confidence: 82%

“…It is apparent from the figure that CRAP was finer than CVA whereas, FRAP was coarser than FVA. Similar findings were reported by previous study [28]. The fineness of CRAP and coarseness of FRA might be attributed to the fragmentation of CRAP materials during crushing and agglomeration of particles respectively and their sources as well.…”

Section: Physical and Mechanical Properties Of Materialssupporting

confidence: 80%

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Experimental Investigation on Engineering Properties of Concrete Incorporating Reclaimed Asphalt Pavement and Rice Husk Ash

2018

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Waste generation from agricultural and construction industries is growing at an upsetting rate that causes a heavy burden on landfill facilities. On the other hand, the construction industry is exhausting natural resources thereby posing environmental problems. This study investigates the potential use of agro-industrial waste such as rice husk ash (RHA) and construction waste like reclaimed asphalt pavement (RAP) as promising construction materials. The durability and physical and mechanical properties of concrete were assessed by partially replacing cement and virgin aggregates with RHA and RAP, up to 20% and 50%, respectively. A total of 22 mixes were studied, twelve of which were devoted to studying the collective effects of RHA and RAP on the engineering properties of concrete. Based on experimental results, RHA and RAP decreased slump, compacting factor, density, water absorption and sorptivity. RHA increased compressive and tensile splitting strength, whereas RAP decreased compressive and tensile splitting strength. Comparable strength and favorable sorptivity values were obtained when 15% RHA was combined with up to 20% RAP in the concrete mix. Thus, utilizing RHA and RAP as concrete ingredients can contribute to solid waste management, engineering and economic benefits.

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Section: Hardened Properties Of Concretesupporting

confidence: 82%

Section: Physical and Mechanical Properties Of Materialssupporting

confidence: 80%

Experimental Investigation on Engineering Properties of Concrete Incorporating Reclaimed Asphalt Pavement and Rice Husk Ash

2018

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“…Furthermore, the content of organic material in the aggregates shall not influence the setting speed of the mortar by extending its time by more than 120 min. In terms of mechanical properties, the compressive strength of the specimens shall not decrease by more than 20% after 28 days, and this could be a limitation considering that a decrease in compressive strength has in general been evidenced for mortar containing RAP depending on the percentage of substitution [40,41]. All these aspects are relevant for the inclusion of RAP in the scope and, consequently, for the application, of this standard.…”

Section: Characterization Of Rap Aggregates According To Existing Standards For Different End-use Applicationmentioning

confidence: 99%

Limitations on the Use of Recycled Asphalt Pavement in Structural Concrete

et al. 2021

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Recycled materials from construction and demolition waste, such as recycled concrete aggregate, recycled brick aggregate, or recycled asphalt coming from the milling of road/motorway surfaces, are the key for a sustainable production of concrete. This paper reviews in particular the use of recycled asphalt pavement (RAP) aggregates in the production of concrete for structural uses. An overview is initially presented to describe the different areas of use of RAP, its definition and the limitations imposed by codes and standards. Relatively to the experimental data provided by the literature, a comparison with the Italian minimum requirements is also provided. Lastly, the influence of RAP on the characteristics of concrete such as compressive strength, flexural strength, Young’s Modulus and a study of durability are presented to define the possible applications of RAP in structural concrete in relation to the current allowable percentage of substitution.

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“…Reference [1] studied on fine fraction of Reclaimed Asphalt Pavement (RAP) aggregates as an alternative to natural fine aggregates. Cement mortar samples were prepared with 25%, 50%, 75% and 100% replacement of natural aggregates.…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Copper Slag and Granite Powder on the Mechanical Properties of Reclaimed Asphalt Pavement Aggregate Concrete

Mahitha¹,

Aswini²

2018

IJSCET

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The replacement of natural gravel aggregate with reclaimed asphalt as coarse aggregate would help in reduction of environmental and ecological effects. Researches were rarely performed by replacing fine aggregate in reclaimed asphalt pavement aggregate concrete. This project aims to investigate the feasibility of improving the strength of recycled asphalt aggregate concrete in which recycled asphalt aggregate is used as a partial replacement of coarse aggregate at 30%. Abrasion and attrition technique is used to modify or roughen the surface of RAP aggregates. Granite powder and copper slag are used as a partial replacement of sand at 5, 10, 15, 20 and 25% in Abrasion and attrition Treated Reclaimed Asphalt Pavement Aggregate Concrete (ABTRAPC). Thirty cubes, twenty cylinders and twenty beams of concrete with granite powder and thirty cubes, twenty cylinders and ten beams of concrete with copper slag were made and tested. The 7 th and 28 th day strengths were found out at these replacements. It was observed that the compressive strength, split tensile strength and flexural strength was found to be maximum at 15% replacement of sand by copper slag. The compressive strength was increased about 29.8% compared to ABTRAPC. Flexural strength similar to normal concrete and about 12.8% greater compared to ABTRAP concrete. The compressive strength and flexural strength was also increased to a maximum at 15% replacement of sand by granite powder and split tensile strength at 20% replacement of granite powder. The results showed that the potential of reclaimed asphalt aggregates as a partial replacement of coarse aggregates in concrete could be effectively enhanced with its a combination with granite powder or copper slag. The increase in compressive strength values and the increase in flexural strength values similar to normal concrete proved that this concrete has its potential to be used in pavement applications.

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Strength and permeation characteristics of cement mortar with Reclaimed Asphalt Pavement Aggregates

Cited by 46 publications

References 29 publications

Experimental Investigation on Engineering Properties of Concrete Incorporating Reclaimed Asphalt Pavement and Rice Husk Ash

Experimental Investigation on Engineering Properties of Concrete Incorporating Reclaimed Asphalt Pavement and Rice Husk Ash

Limitations on the Use of Recycled Asphalt Pavement in Structural Concrete

Effect of Copper Slag and Granite Powder on the Mechanical Properties of Reclaimed Asphalt Pavement Aggregate Concrete

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