Title: Challenges facing the labour-based construction of bituminous surfacings in Africa
Abstract: African countries have many low-volume roads whose management would be more cost-effective if surfaced using surface treatments. In most low-income African countries there is scarcity of mechanical equipment for sprayed sealing or surface dressing and their use cannot be justified on many low-volume roads which continue to be more expensively managed as gravel roads. The use of labour based bituminous surfacing of roads is therefore an appropriate, resource conserving and sustainable solution for many rural roads in Africa. This paper discusses the problems encountered in introducing the technology when training the trainers through practical field demonstrations and suggests solutions. Discussed problems include the low availability of the more appropriate emulsions and the need for a more cutback friendly technology, preparation of a uniform surface, and availability of angular and single sized chippings. (a) For the covering entry of this conference, please see ITRD abstract no. E220163.
Publication Year: 2010
Publication Date: 2010-10-01
Language: en
Type: article
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