Concrete
is a nifty construction material. Concrete has some attractive properties when
it is newly mixed, it is plastic and malleable, but when it is hardened it
becomes very strong and durable. These qualities make concrete unique from
other materials. For the reason that concrete is the main construction material
across the world and widely used in all kinds of civil engineering works, such
as for building skyscrapers, dams, bridges,barrage, highways, and houses. As we
know that aggregate represents about 70-80% of concrete elements, so it will be
useful to recycle the aggregate for construction works and also to solve the
environmental problems. Iraq is suffering a lot of the problem of rubble(debris) as a result of the wars that occurred during
the past years, on the other hand in some places have been converted buildings
from residential buildings to commercial buildings, so these destroyed
buildings constitute the problem of environmental pollutants. To minimize the trouble of excess of waste material it
is suitable steps to utilize the recycled aggregates provide that the desired
final product will meet the standards. In the present investigation adjustments
to traditional mix designs of
concrete using locally available waste material was studied experimentally.The experimental program
consisted of nine mixes with mix proportions [1:2:4] and constant slump
equal to (13) cm were constructed and tested. These nine mixes classified into
three groups based on the types of sand and gravel used in all mixes.The
experimental results showed that, the optimum mix was Mix2 in Group (B) with (cement : 50%
naturally sand and 50% crushed recycled concrete as sand : crushed boulder as
gravel), which enhance the properties of the existing concrete , such that, increasing compressive strength by (18.6%), flexural
strength by (8.3%) and splitting strength by (28.9%), as comparing with Mix1 (Reference mix).
Conventional concrete Concrete locally waste material Compressive strength Flexural strength Splitting strength
Primary Language | English |
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Subjects | Engineering |
Journal Section | Articles |
Authors | |
Publication Date | July 25, 2019 |
Published in Issue | Year 2019Volume: 6 |