Stabilization of sand for road construction


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Abubaker, Omar E A (2020). Stabilization of sand for road construction. University of Birmingham. Ph.D.

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In a desert where suitable granular materials which can be used for the construction of roads are not easily available. Desert sands tend to be single sized and therefore it is not essay to use them for construction as pavement materials. This research aimed at investigating techniques for stabilizing uniform sand for using in a road.

An extensive literature review on stabilisation of desert sand showed that little research had been undertaken on the subject. Nonetheless, extensive literature study was used to inform the development of an experimental programme, which included the following sand reinforced with fibre, fly ash and vitrified slag and a combination of fly ash with fibre reinforced sand and fibre with slag reinforced sand. In addition to the standard characterisation tests, resilient modulus, permanent deformation, shear strength, and unconfined compressive strength compacted at a range of water contents were also determined. Tests also included freeze-thaw durability tests as minimum desert temperatures can drop below zero. The optimum materials contents were a 0.5% polypropylene fibre content which 19mm long, 35% fly ash content and 40% slag content of the dry weight of sand. For the analytical pavement design, traffic data from an existing road in was used. Thereafter, pavement responses of different pavement materials were obtained using the KENLAYER program to determine the road section. Results showed that the fibre reinforced sand, fibre with fly ash reinforced sand, slag stabilized sand and slag with fibre reinforced sand were appropriate materials for to improve the uniform sand to a level where it could be used as subgrade.

Type of Work: Thesis (Doctorates > Ph.D.)
Award Type: Doctorates > Ph.D.
Licence: All rights reserved
College/Faculty: Colleges (2008 onwards) > College of Engineering & Physical Sciences
School or Department: School of Engineering, Department of Civil Engineering
Funders: None/not applicable
Subjects: T Technology > TE Highway engineering. Roads and pavements
T Technology > TH Building construction


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