An Assessment of the Adoption of High-Density Polyethylene, HDPE (WEHOLITE) Technology in Construction Projects in Tanzania

Abstract

Over the years, advances have been made to provide reliable construction materials and technologies altogether with the aim to improve project performance. It is notable that the construction industry worldwide is plagued by poor project performance and previous studies have indicated that adoption of new technologies is pivotal to project success. This study aimed at assessing the adoption of high-density polyethylene, HDPE (Weholite) technology in construction projects in Tanzania and using findings to develop a framework for adoption of the technology. The research adopted a descriptive research design with simple random sampling technique used for contractors and a snowball sampling for consultants. Structured questionnaires were used for data collection and interviews were done for framework validation. Findings from the study indicate sufficient knowledge and awareness of the technology with responses indicating that the technology is very effective with durability, material service life, light weight, superior hydraulic properties, superior quality and flexibility seen as major performance characteristics in use and adoption of the technology. An overall indication from both contractors and consultants attributed reduction in installation time, overall reduction in project labour costs, increase in project efficiency, easiness of transport and handling and reduction in work program with merit to project performance and objectives. Further to this, an evaluation of barriers in adoption of the technology revealed that for both contractors and consultants, major barriers are insufficient incentives for adoption of emerging technologies in the construction industry, insufficient knowledge on Weholite as a construction material, inadequate knowledge on the design aspects of Weholite and that the current construction industry culture inherently slows down the adoption of the technology. Both contractors and consultants indicated strategies for increased adoption of the technology as the use and application of Weholite technology should be taught and illustrated to construction industry professionals, project consultants to specify Weholite as a material option where applicable, developing training approach prior to introduction of new technology, project concept design to factor the usability of Weholite and integrating technology deployment with change management. These findings were crucial in developing a framework for adoption of the technology in construction projects in Tanzania.