POZZOLANICITY ASSESSMENT OF SUDANESE GROUNDNUT SHELL ASH
The study investigated the chemical, physical, and mineralogical characteristics of the GSA and its reactivity toward lime and cement, in addition, the compressive strengths of blended mortar containing GSA in percentage addition were tested at 7, 28, and 91 days. XRD technique was used to achieve an optimal calcining temperature for the shell. The results of the chemical analysis showed that the sum of Silica, Alumina, and Iron oxide was 83.75%. The strength reactivity with lime was 3.7MPa, against 4 MPa required by ASTM C-618 and IS: 1344. The strength activity index was found to be 73% against 75% and 80% required by ASTM C-618 and IS: 1344, respectively. These results indicated that the GSA possesses low Pozzolanic activity and the optimum pyroprocessing temperature is 650 0C with heating time 2 hours , and the recommended substitution level is 15%.
. ASTM C618-(2005), Standard Specification for
Fly Ash or Raw or Natural Pozzolan for Use as a
Mineral Admixture in Portland cement Concrete,
American Society for Testing and Materials,
. LEA, F.M. (1970), The chemistry of Cement and
Concrete, (3rd. Edition, Edward Arnold, London)
. Rafat, S. Khan, M.I. (2011). “Supplementary
Cementing Materials ". Springer-Verlag Berlin
. Muller C.J. (2005), Pozzolanic activity of natural
clay minerals with respect to environmental
geotechnics doctoral diss., Swiss Federal Institute
of Technology, Zurich, Switzerland.
. IS 650: 1991 Indian standard ”Specification of
standard sand for testing cement”
. Indian standard (IS :1727-1967)” Methods of test
for pozzolanic materials”
. Indian standard (IS:4031-1996) part 6- “Methods
of physical tests for hydraulic cement,
determination of compressive strength of
hydraulic cement (other than masonry cement)”
. IS: 4031: part 5: 1988 ,”Methods of physical tests
for hydraulic cement, Determination of initial and
final setting times”.
. ACI 232.( 2000), “Use of raw or processed
natural pozzolans in concret.”, ACI Committee
Report, American Concrete Institute,
Farmington Hills, MI.p.4.
. Indian standard (IS 1344-1981)”Specification of
calcined clay, pozzolana”
. Indian standard (IS 1489-1967),”Specification for
Portland- Pozzolana Cement”
. Alabadan, B. A. (2005), “Partial Replacement of
Ordinary Portland Cement (OPC) with Bambara
Groundnut Shell Ash (BGSA) in Concrete”,
Leonardo Electronic Journal of Practices and
Technologies, Issue 6, pp. 43-48.
. Sadaa, B.H., (2013) “An investigation into the use
of groundnut shell as fine aggregate replacement,
Nigerian Journal of Technology”,(NIJOTECH)
Vol. 32, No. 1, pp. 54–60.
. Buari, T.A, (2013) , “Characteristics Strength of
groundnut shell ash (GSA) and Ordinary Portland
cement (OPC) blended Concrete in Nigeria”,
IOSR Journal of Engineering (IOSRJEN), pp.
. Olutoge, F. A. (2013), “Characteristics Strength
and Durability of Groundnut Shell Ash (GSA)
Blended Cement Concrete in Sulphate”
Environments, International Journal of Scientific
& Engineering Research, Volume 4, Issue 7,
. Nwofor, S. (2012), “stability of groundnut shell
ash (GSA)/ordinary portland cement (OPC)
concrete in Nigeria”, Advances in Applied
Science Research, 3 (4), pp.2283-2287.
. Ketkukah, T. S. Ndubura, E. E.(2006),
“Groundnut husk ash (GHA) as partial
replacement of cement in mortar”, Nigerian
Journal of Technology, Vol. 25, No. 2, pp.84-90.
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