Engineering Properties of Nagar Parkar Plutonic & Volcanic Rocks as a Construction Aggregates, District Tharparkar, Sindh Province, Pakistan

Abstract

The purpose of this paper is to study the important engineering properties of the volcanic rocks

present with the Nagar Parkar Granites located from Sindh University Campus Jamshoro 5 h 44

min (355.3 km) via Hyderabad-Badin Road and 5 h 57 min (323.5 km) via Naukot-Mithi Road

and Islamkot, the rocks look suitable for pavement and concrete aggregates. Numbers of standard

tests were conducted. Which included; Specific Gravity, Gradation, Soundness, Particle shape

and Surface Texture Absorption Index, Abrasion Resistance, Deleterious Materials, in addition

to moisture content and Fineness modulus. Geologically there are two main components known

as Pink Granites and Grey granites on the basis of the plagioclase/orthoclase mineral component

[1]. Results of the standard tests depicted that both Pink Granites and Grey Granites samples have

different characteristics especially concerning abrasion resistance. After comparing the obtained

results with standard specifications showed that both samples can produce aggregates that are

suitable for pavement but only Pink sample can produce concrete aggregates. It was also assumed

that there should be a technical control in the crushing circuit to produce the required gradation.

Keywords: Pink granite; Construction aggregates; Grey granite; Pavement aggregates; Concrete

aggregates

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