Scipediacontent: Scipediacontent moved page Draft Content 298123802 to Loke et al 2021a

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Scipediacontent moved page Draft Content 298123802 to Loke et al 2021a

Scipediacontent: Created page with "== Abstract == The history of the South African construction industry dates as far back as the Castle of Good Hope (1666), Slave Lodge (1679), Robben Island (1700),..."

2021-11-30T13:16:21Z

Created page with "== Abstract == The history of the South African construction industry dates as far back as the Castle of Good Hope (1666), Slave Lodge (1679), Robben Island (1700),..."

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== Abstract ==

The history of the South African construction industry dates as far back as the Castle
of Good Hope (1666), Slave Lodge (1679), Robben Island (1700), Union Buildings (1913),
memorials and cathedrals, among many others. These structures represent the political,
slavery, liberation and religious history of South Africa and its development throughout the
years, while also contributing towards economic growth through tourism. Historical buildings
stand out from the rest of the modern constructions as they portray marvellous architectural
designs and unique materials used for their construction. However, due to ageing and
environmental conditions, they often show critical signs of deterioration, which threaten the
existence of some. In attempts to rescue these national treasures, the use of Portland cement,
which is considered incompatible with the original materials, has become a common practice,
not only in South Africa but abroad. To avoid disparity in materials during repair of historic
structures, original material characterization is therefore recommended. This paper
investigates the effects of Portland cement used on the repairs of historical masonries of the
Castle of Good Hope, Cape Town and buildings on Robben Island, in South Africa. The mortar
samples were collected from the Castle and analyzed using the techniques such as the visual
investigation, cohesion test, microscopic and titration test. It is observed that the original lime-
based mortars are not compatible with the Portland cement produced mortars. It was evident
on the masonry, as the repairs are repelling from the original surfaces on these two structures.

== Full document ==
<pdf>Media:Draft_Content_298123802p992.pdf</pdf>
== References ==

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[23] Loke, M.E., Kumar, P. and Haldenwang, R. Physical characterization of heritage mortars for restoration interventions. IEEE 10th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT 2019), Cape Town: South Africa, 20- 22 January 2020 (Presented).

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Loke et al 2021a - Revision history

Scipediacontent: Scipediacontent moved page Draft Content 298123802 to Loke et al 2021a

Scipediacontent: Created page with "== Abstract == The history of the South African construction industry dates as far back as the Castle of Good Hope (1666), Slave Lodge (1679), Robben Island (1700),..."