Cost-Effective Upgrading of Gravel Roads Using Naturally Available Materials with Anionic New-Age Modified...

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Gerrit J Jordaan Prof Jordaan

Cost-Effective Upgrading of Gravel Roads Using Naturally Available Materials with Anionic New-Age Modified Emulsion

Nme Stabilisation

Gerrit J Jordaan, Prof Jordaan

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Hardback

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English

Department of Civil Engineering, University of Pretoria, Pretoria, South Africa
30 December 2020

Transport planning & policy; Buses, trams & commercial vehicles: general interest

Summary
Details

"A reliable road network is a pre-requisite for economic development. However, the provision of all-weather transportation infrastructure (roads) in developing areas, using traditional design approaches, currently comes at a considerable cost. The construction of a low-volume two lane road in rural and urban areas in Africa may vary from about US$ 500 000/km (2018) in more developed areas, to US$ 1.2 million/km rural areas, to more in remote areas as influence by material, logistics and safety risks. A general lack of available funds and lack of resources allocated for road infrastructure development is a reality. The current surfaced road network backlog, the lack of resources and the high unit costs make it basically impossible for the Developing World to provide the road infrastructure required to become economically competitive. The high unit costs can be addressed through a change in current engineering practices and the implementation of available and proven new technologies. ""New-age"" nanotechnology solutions are available to improve the characteristics of naturally available materials to meet the structural engineering requirements for all road pavement layers. These technologies have been proven through laboratory, full scale Accelerated Pavement Tests (APT) tests and practical implementation. The hydrophobic (water-repellent) action achieved through the stabilisation of pavement layers using anionic NME stabilisation agents, to a large extend prevents (or at least considerably retards) water from entering pavement layers and causing distress due to a change in the shear strength of the materials in the pavement structure. This book provides a comprehensive approach towards the upgrading of gravel / soil roads using naturally available materials stabilised and improved with anionic New-age Modified Emulsions (NME). The aim is to provide all-weather surface roads at an affordable costs, incorporating the best available technologies. This can be achieved without compromising the integrity of the road pavement structure and / or the safety of road users. Applicable standards together with the implementation of the latest proven developments in material sciences makes this a reality."

By: Gerrit J Jordaan, Prof Jordaan
Imprint: Department of Civil Engineering, University of Pretoria, Pretoria, South Africa
Dimensions: Height: 279mm, Width: 216mm, Spine: 22mm
Weight: 1.179kg
ISBN: 9780620914154
ISBN 10: 0620914157
Pages: 276
Publication Date: 30 December 2020
Audience: General/trade , ELT Advanced
Format: Hardback
Publisher's Status: Active