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Title: Laboratory Research on Reclaimed Asphalt Pavement- Inclusive Cementitious Mixtures

Author(s): Sarah Mariam Abraham and G. D. R. N. Ransinchung

Publication: Materials Journal

Volume: 117

Issue: 2

Appears on pages(s): 193-204

Keywords: durability; mortar; reclaimed asphalt pavement; strength

Date: 3/1/2020

Abstract:
A comprehensive analysis on the effect that fine fraction of reclaimed asphalt pavement (RAP) aggregates can produce on the fresh properties, strength, and durability characteristics of cementitious mixtures—that is, mortar and concrete—when used as partial or full replacement of natural fine aggregates (NA) is represented in this study. The replacements of NA were done by volume at 25, 50, 75, and 100% catering to the difference in specific gravity between the aggregates. The cement was also partially replaced by volume using silica fume and activated sugarcane bagasse ash (SCBA). To achieve this objective, effect of RAP aggregates was studied in both mortar and concrete. Although recycling is not a novel concept, altering the conventional mixture design and testing methodology whilst using RAP aggregates were looked into. The application of this study was focused upon rigid pavements, where flexural strength is of great importance. The mixtures considered did achieve the design flexural strength and protected the reinforcement from corrosion due to basic pH and absence of carbonation.




  

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