ABSTRACT
In this research
work, the mechanical properties, durability and stiffness parameters of
concrete in which the concrete component was partially replaced with cassava
peel ash (CPA) were investigated. The replacement level of cement with CPA
ranges from 0 – 40% at the hydration period of 3, 7, 28, 60 and 90 days
respectively. The chemical analysis of CPA shows that it contain SiO2
(55.93%), Fe2O3 (6.02%) and Al2O3
(19.93%) among other oxides. The sum total of SiO2, Fe2O3
and Al2O3 is greater than 70% minimum prescribed by ASTM
C618 – 78 which indicates that CPA can be used as a pozzolan. The pozzolanic
activity index (PAI) of CPA is 75.8% which is also an indication that it has
very high remarkable pozzolanic properties. The results of compressive strength
of 5 – 40% replacement of cement with CPA range from 12.56N/mm2 to
33.26N/mm2 as against 13.93N/mm2 to 35.23N/mm2
for the control test. The result of flexural strength of 5 – 40% replacement of
cement with CPA range from 3.33N/mm2 to 15.17N/mm2 as
against 4.67N/mm2 to 16.80N/mm2 for the control test (0%
replacement). The initial setting time of 5% to 40% replacement of cement with
CPA range from 55minutes to 123minutes as against 52minutess for the control
test. The final setting time of the cement with CPA at the same replacement
level range from 596minutes to 788minutes as against 591minutes for the control
test. The young’s modulus of elasticity for 5% to 40% replacement of cement
with CPA range from 22572.09 N/mm2 to 31124.51 N/mm2 as
against 23352.50 N/mm2 to 31721.31 KN/m2 for the control
test. The modulus of rigidity of 9405.038 N/mm2 to 12968.55 N/mm2
as against 9730.208N/mm2 to 13217.21 N/mm2 for the
control test.
CHIMMAOBI, C (2023). Characterization And Use Of Cassava Peel Ash In Concrete Production . Mouau.afribary.org: Retrieved Dec 25, 2024, from https://repository.mouau.edu.ng/work/view/characterization-and-use-of-cassava-peel-ash-in-concrete-production-7-2
CHIMMAOBI, CHIMMAOBI. "Characterization And Use Of Cassava Peel Ash In Concrete Production " Mouau.afribary.org. Mouau.afribary.org, 15 May. 2023, https://repository.mouau.edu.ng/work/view/characterization-and-use-of-cassava-peel-ash-in-concrete-production-7-2. Accessed 25 Dec. 2024.
CHIMMAOBI, CHIMMAOBI. "Characterization And Use Of Cassava Peel Ash In Concrete Production ". Mouau.afribary.org, Mouau.afribary.org, 15 May. 2023. Web. 25 Dec. 2024. < https://repository.mouau.edu.ng/work/view/characterization-and-use-of-cassava-peel-ash-in-concrete-production-7-2 >.
CHIMMAOBI, CHIMMAOBI. "Characterization And Use Of Cassava Peel Ash In Concrete Production " Mouau.afribary.org (2023). Accessed 25 Dec. 2024. https://repository.mouau.edu.ng/work/view/characterization-and-use-of-cassava-peel-ash-in-concrete-production-7-2