The Engineering Study on the Use of Crushed Stone Aggregate and Crusher Dust Mixes in Flexible Pavements of Karachi-Hyderabad Motorway, Sindh, Pakistan
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The development of the country is directly related with the better road communication from mega
cities to rural villages. Pakistan is a developing country and has started a grand network of highways,
superhighways and motorways in all four provinces along with Kashmir and Northern and northwestern
regions bordering china and Afghanistan. Highway Flexible pavements are the most commonly used form
of pavements and have four component layers namely Sub-grade, Sub-base and base and surface courses,
which are constructed of materials like natural soils, sand, morrum etc., are considered to be costly in
terms of construction as well as maintenance. The result of plastic fine sand their sticky characteristics
in natural soils hampered the performance of the pavement. To reduce the impact of failures alternative
materials are to be investigated. In this connection an attempt is made by using Crushed Stone Aggregate
and Crusher Dust as road component materials. Gradation mixes were prepared to meet the specifications
of National Highway Authority Pakistan and subjected for various geo-technical characterizations such
as gradation, compaction, strength etc. According to the results of strength values of compacted crusher
dust and Crushed Stone mixes have been evaluated through a series of CBR tests by varying the crusher
dust and sand contents from 10% to 60%. On the other hand, the suitability of compacted crusher dust
as a road base and sub-base materials have been verified in accordance with N H A P specifications and
findings that 20-30% in place of sand can satisfy the materials used as sub-base and base courses [1-3].
Keywords: Pavement; Highway; Void ratio; CBR; Construction
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Mushtaque, A (2020). The Engineering Study on the Use of Crushed Stone Aggregate and Crusher Dust Mixes in Flexible Pavements of Karachi-Hyderabad Motorway, Sindh, Pakistan. Afribary.com: Retrieved September 19, 2020, from https://afribary.com/works/the-engineering-study-on-the-use-of-crushed-stone-aggregate-and-crusher-dust-mixes-in-flexible-pavements-of-karachi-hyderabad-motorway-sindh-pakistan
Ahmed, Mushtaque. "The Engineering Study on the Use of Crushed Stone Aggregate and Crusher Dust Mixes in Flexible Pavements of Karachi-Hyderabad Motorway, Sindh, Pakistan" Afribary.com. Afribary.com, 26 Aug. 2020, https://afribary.com/works/the-engineering-study-on-the-use-of-crushed-stone-aggregate-and-crusher-dust-mixes-in-flexible-pavements-of-karachi-hyderabad-motorway-sindh-pakistan . Accessed 19 Sep. 2020.
Ahmed, Mushtaque. "The Engineering Study on the Use of Crushed Stone Aggregate and Crusher Dust Mixes in Flexible Pavements of Karachi-Hyderabad Motorway, Sindh, Pakistan". Afribary.com, Afribary.com, 26 Aug. 2020. Web. 19 Sep. 2020. < https://afribary.com/works/the-engineering-study-on-the-use-of-crushed-stone-aggregate-and-crusher-dust-mixes-in-flexible-pavements-of-karachi-hyderabad-motorway-sindh-pakistan >.
Ahmed, Mushtaque. "The Engineering Study on the Use of Crushed Stone Aggregate and Crusher Dust Mixes in Flexible Pavements of Karachi-Hyderabad Motorway, Sindh, Pakistan" Afribary.com (2020). Accessed September 19, 2020. https://afribary.com/works/the-engineering-study-on-the-use-of-crushed-stone-aggregate-and-crusher-dust-mixes-in-flexible-pavements-of-karachi-hyderabad-motorway-sindh-pakistan