INFLUENCE OF NANO-CLAY ON THE BEHAVIOR OF RECYCLED AGGREGATE CONCRETE
Ezzat Gazy Alhamad;
Abstract
Summary:
The present work addresses the influence of incorporation of nano-clay on the behavior
of concrete containing coarse recycled concrete aggregate (RCA). The experimental work
was divided into two phases. The first phase was carried out to select optimum mixes with
the highest compressive strength. In this phase, four groups of concrete mixes were prepared.
Each group includes of four mixes. In each group, coarse RCA was used to replace 0%100%
of
natural
coarse
aggregate.
Nano
clay
was
used
at
0,
1.5,
3
and
4.5%
by
weight
of
cement.
The second phase was carried out to investigate the characteristics of concrete
containing RCA and nano-clay. In this phase, five mixes with the highest compressive
strength were selected from the first phase. The compressive strength, splitting tensile
strength, flexural strength, water absorption and abrasion resistance were determined for the
optimum concrete mixes in addition to their microstructure. The results indicated the
enhancement in concrete behavior by using of nano-clay while a reduction in concrete
performance by using recycled aggregate. So, nano-clay could be used to enhance the
performance of concrete containing RCA. The optimum mix was that containing 3% nanoclay
and
25%
RCA.
The present work addresses the influence of incorporation of nano-clay on the behavior
of concrete containing coarse recycled concrete aggregate (RCA). The experimental work
was divided into two phases. The first phase was carried out to select optimum mixes with
the highest compressive strength. In this phase, four groups of concrete mixes were prepared.
Each group includes of four mixes. In each group, coarse RCA was used to replace 0%100%
of
natural
coarse
aggregate.
Nano
clay
was
used
at
0,
1.5,
3
and
4.5%
by
weight
of
cement.
The second phase was carried out to investigate the characteristics of concrete
containing RCA and nano-clay. In this phase, five mixes with the highest compressive
strength were selected from the first phase. The compressive strength, splitting tensile
strength, flexural strength, water absorption and abrasion resistance were determined for the
optimum concrete mixes in addition to their microstructure. The results indicated the
enhancement in concrete behavior by using of nano-clay while a reduction in concrete
performance by using recycled aggregate. So, nano-clay could be used to enhance the
performance of concrete containing RCA. The optimum mix was that containing 3% nanoclay
and
25%
RCA.
Other data
| Title | INFLUENCE OF NANO-CLAY ON THE BEHAVIOR OF RECYCLED AGGREGATE CONCRETE | Authors | Ezzat Gazy Alhamad | Issue Date | 2018 |
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