| dc.description.abstract | Billions tons of conventional concrete are produced yearly as well as cement which emit
large tons of carbon dioxide due to huge millions of metric tons produced annually. Sequel to
this, there is need to produce a sustainable product due to pollution from cement production,
using agricultural waste materials which have recently been found to be of great interest to
construction industries at large due to their ability to substituting cement will solve
environmental and pollution related issues. Bamboo leaf ash and baggash ash are produced as
a result of combustion which serves as supplementary cementitious materials and can be used
for construction purposes. This study determines the compressive strength of concrete
without ashes, bamboo leaf ash, and baggash ash concrete at varying percentage replacement
of 5%, 10%, 15%, 20% respectively. Physical test, workability test, compressive strength
test, and durability test was performed on concretes. A total of 138 cubes were produced
using 100*100*100 size cube cured at 7, 28, 56 and 90 days, of which 108 cubes were to
ascertain compressive strength for all the concretes, while 30 cubes were used for durability
test. Based on experimental results obtained, BLA surpassed BA concrete, and concrete
without ash in term of compressive strength at early and later age of curing using 10% as
optimum level of replacement, thus, one way ANOVA indicated, that BLA concrete is
statistically better than BA concrete and statistically the same at 56 and 90 days of curing for
conventional, BLA, and BA concrete. Furthermore, BLA and BA concretes reduced
durability. BA concrete increased the water absorption, permeable voids, and sorptivity. As a
result, BLA and BA can be considered as a good pozzolanic material which can save cost of
construction, improved concrete properties. | en_US |
