Farhat Ullah, Rehan Khan, Asad Muhammad, Ihtisham Islam, Abdul Rahim Asif, Qarib Ullah, Salman Khurshid
Assessment of Petrographic and Physico-Mechanical Properties of Granodiorites for Aggregate Usage
Číslo: 2/2025
Periodikum: Acta Montanistica Slovaca
Klíčová slova: CPEC; Construction materials; Aggregates; Granodiorite; Mechanical properties
Pro získání musíte mít účet v Citace PRO.
Anotace:
The current study systematically evaluates the granodiorites from the
Mayar area through integrated petrographic and physico-mechanical
analyses as well as the interrelationship between these parameters to
assess their viability as heavyweight aggregates and dimensions
stones in civil engineering applications. Field observations indicate
that the rock is medium to coarse-grained, hard, and compact, having
dark brown and greyish colour on weathered and fresh surfaces,
respectively. Petrographic study exhibits that the rocks are euhedral
to anhedral, having the dominant concentrations of plagioclase,
quartz, K-feldspar, biotite, hornblende, fluorite, and andalusite, with
a minor amount of clinopyroxene, muscovite, rutile, and actinolite.
The physical and mechanical characterization includes grading,
specific gravity and absorption, flakiness and elongation indices, Los
Angeles abrasion, and soundness. These analyses demonstrate
compliance with standard permissible ranges, confirming their
potential as construction materials. Mechanical analysis yields
average uniaxial compressive strength (UCS) and uniaxial tensile
strength (UTS) 52.96 MPa and 8.54 MPa, respectively, classifying
the rock within the moderate to strong category. The aboveintegrated study reveals that medium-grained granodiorites exhibit
higher strength compared to coarse-grained varieties. Plagioclase and
mica contents are identified as the dominant controlling factors,
whereas quartz and K-feldspar show negligible influence on the
strength of the granodiorite. Considering the favourable mechanical
properties, excellent and extensive exposure and logistical
accessibility of the outcrop, it is concluded that the granodiorite of
the Mayar area is recommended for high-load-bearing applications,
including Dir- Chitral motorway, CPEC developmental schemes,
railway ballast, highways, and dimension stone cladding. Moreover,
the quarry byproducts can be utilized as sustainable aggregates in
secondary construction applications.
Zobrazit více »
Mayar area through integrated petrographic and physico-mechanical
analyses as well as the interrelationship between these parameters to
assess their viability as heavyweight aggregates and dimensions
stones in civil engineering applications. Field observations indicate
that the rock is medium to coarse-grained, hard, and compact, having
dark brown and greyish colour on weathered and fresh surfaces,
respectively. Petrographic study exhibits that the rocks are euhedral
to anhedral, having the dominant concentrations of plagioclase,
quartz, K-feldspar, biotite, hornblende, fluorite, and andalusite, with
a minor amount of clinopyroxene, muscovite, rutile, and actinolite.
The physical and mechanical characterization includes grading,
specific gravity and absorption, flakiness and elongation indices, Los
Angeles abrasion, and soundness. These analyses demonstrate
compliance with standard permissible ranges, confirming their
potential as construction materials. Mechanical analysis yields
average uniaxial compressive strength (UCS) and uniaxial tensile
strength (UTS) 52.96 MPa and 8.54 MPa, respectively, classifying
the rock within the moderate to strong category. The aboveintegrated study reveals that medium-grained granodiorites exhibit
higher strength compared to coarse-grained varieties. Plagioclase and
mica contents are identified as the dominant controlling factors,
whereas quartz and K-feldspar show negligible influence on the
strength of the granodiorite. Considering the favourable mechanical
properties, excellent and extensive exposure and logistical
accessibility of the outcrop, it is concluded that the granodiorite of
the Mayar area is recommended for high-load-bearing applications,
including Dir- Chitral motorway, CPEC developmental schemes,
railway ballast, highways, and dimension stone cladding. Moreover,
the quarry byproducts can be utilized as sustainable aggregates in
secondary construction applications.