Mechanical and Durability Characterization of Hybrid Recycled Aggregate Concrete
Rashid Hameed, Muhammad Tahir, Safeer Abbas, Haseeb Ullah Sheikh, Syed Minhaj Saleem Kazmi, Muhammad Junaid Munir
TL;DR
This study examines the mechanical and durability properties of concrete made with hybrid recycled aggregates from construction waste and burnt clay bricks.
Contribution
The study introduces hybrid recycled aggregate concrete (HRAC) with 100% natural aggregate replacement and evaluates its performance with fly ash as a cement substitute.
Findings
Compressive strength of HRAC is significantly influenced by the proportion of recycled brick and concrete aggregates.
20% fly ash replacement improved the mechanical and durability properties of HRAC for use in bricks or pavers.
Hybrid mixes showed acceptable performance compared to natural aggregate concrete under acidic and brine conditions.
Abstract
The recycling of construction and demolition waste (CDW) for the extraction of recycled concrete aggregates (RCAs) to be used to produce recycled aggregate concrete (RAC) is widely acknowledged internationally. However, CDW not only contains concrete debris but may also contain burnt clay bricks. The recycling of such CDW without the segregation of different components would result in recycled aggregates having different proportions of concrete and brick aggregates. The utilization of these aggregates in concrete requires a detailed investigation of their mechanical and durability properties. In this regard, the present study focused on investigating the mechanical and durability properties of hybrid recycled aggregate concrete (HRAC) made by the 100% replacing of natural aggregates with recycled brick (RBAs) and RCA in hybrid form. The partial replacement of cement with fly ash was…
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Taxonomy
TopicsAnimal and Plant Science Education