Author(s)

Syed Yasir Ali Shah^1*, Dou Bin^1*, Obaidullah  ², Javid Hussain³, Khaleel Hussain¹, Ali Asghar³, Hadi Hussain⁴, Aftab Ur Rahman³

¹Geological Resources and Engineering, China University of Geosciences, Wuhan, China.
²Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China.
³Geological Engineering, China University of Geosciences, Wuhan, China.
⁴Department of Oil and Gas Engineering, China University of Geosciences, Wuhan, China.

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.

Potential Aggregates, Geotechnical Study, Petrographic Analysis, Regression Analysis, NikanaiGhar Limestone

Shah, S. , Bin, D. ,  , O. , Hussain, J. , Hussain, K. , Asghar, A. , Hussain, H. and Rahman, A. (2022) Physio-Mechanical Properties and Petrographic Analysis of NikanaiGhar Limestone KPK, Pakistan. Open Journal of Civil Engineering, 12, 169-188. doi: 10.4236/ojce.2022.122011.