TITLE:
Physio-Mechanical Properties and Petrographic Analysis of NikanaiGhar Limestone KPK, Pakistan
AUTHORS:
Syed Yasir Ali Shah, Dou Bin, Obaidullah, Javid Hussain, Khaleel Hussain, Ali Asghar, Hadi Hussain, Aftab Ur Rahman
KEYWORDS:
Potential Aggregates, Geotechnical Study, Petrographic Analysis, Regression Analysis, NikanaiGhar Limestone
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.12 No.2,
May
24,
2022
ABSTRACT: Petrographic, physical, and mechanical assessment investigation of NikanaiGhar limestone aggregate exposed in the Lower
Dir area of Malakand Division, Pakistan, were conducted to evaluate and
investigate its potential for use as a construction material for engineering
projects. Different geotechnical tests and petrographic analyses were performed
to evaluate its potential for construction purposes. Geotechnical tests include
unconfined compressive strength, ultimate tensile strength test, specific
gravity, share strength, porosity, and water absorption. The evaluated physical
attributes were compared to standard specifications to determine their
suitability as a construction material. Petrographic investigation indicates mainly two
types of stones. Stylolitic spar stone and Spar stone are metamorphosed
equivalent limestones and are not prone to alkali-silica reactivity. Mutual relationships between physical parameters have been described by
simple regression analysis. Significant direct correlation of specific gravity
with ultimate tensile strength and uniaxial compressive strength was noted.
However, negative trends of Porosity with ultimate tensile strength and
uniaxial compressive strength were observed which is in accordance with
standard. The analysis revealed that the limestones of NikanaiGhar Formation
fall within the standard specification limits and can be used as aggregates for
the indigenous construction industry.