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Describing building sustainability innovation potential : Block making in Tanzania and Uganda

Raine Isaksson (Författare), Excellence in Services International Conference Thessaloniki (Greece), 29-30 August. 2019., Apollo Buregyeya (Författare)

URI http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395340, URN urn:nbn:se:uu:diva-395340

Uppsala universitet Teknisk-naturvetenskapliga vetenskapsområdet (Utgivare)

utgivning

2019

är del av

Proceedings of 22nd Excellence in Services International Conference, Thessaloniki (Greece) | 29-30 August 2019

Onlineresurs

Digital resurs · 1 bibliotek

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http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395340

ämne

Engineering and Technology, Other Engineering and Technologies, Teknik, Annan teknik, Sustainability; concrete; sandcrete; hollow block; cement productivity; Africa

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Sammanfattning

Purpose. This paper describes opportunities for sustainable building in East Africa. Previous research indicates that cement is often poorly used in the commonly used concrete blocks. Better use of cement and thereby lower costs and a lower carbon footprint might be achieved by substituting solid blocks with hollow ones while sustaining functional requirements. This work could further be advanced by a business model that promotes affordability and a lowered carbon footprint of blocks produced at building site. Methodology. Block manufacturing processes in Tanzania and Uganda are described. Sustainability performance as price and carbon footprint per wall m 2 are assessed and compared for solid and hollow concrete/sandcrete blocks. Findings. The results from Uganda indicate that there is a clear economic and environmental advantage in using hollow blocks compared to solid blocks. There seems to be innovation potential to be realised both in choice of product and improvement of manufacturing processes. The preliminary findings indicate that costs per m 2 of wall could for 6 inch blocks of the same functional quality be reduced with some 20% and the carbon footprint with 40% when using hollow blocks instead of solid ones. In Tanzania only a carbon footprint saving potential of about 30% has been inferred. Practical implications. The results indicate that in order to assess overall global improvement potential, sustainability needs to be understood on the operational level. Originality/value. The results contribute to the development of more sustainable building blocks in the context of East Africa.

Detaljer

Medverkan och funktion

Raine Isaksson (Författare), Excellence in Services International Conference Thessaloniki (Greece), 29-30 August. 2019., Apollo Buregyeya (Författare)