Influence of Construction Materials on Seismic Performance of Buildings After Ecuador M7.8 Earthquake


Abstract eng:
More than 7000 buildings were severe damaged or destroyed after the Mw 7.8 Pedernales earthquake in Ecuador, last April 16, 2016. In this paper, materials used in the construction of such buildings are studied as a possible source of vulnerability. Wooden and concrete material used for structural elements and masonry walls have been analyzed and tested (lab and SEM). The analysis included construction practices applied. Evidence found confirmed that construction materials quality is far from acceptable and construction practices applied were very poor. The use of sea sand caused very high corrosion in steel reinforcement and mylonitization of coarse aggregates used in concrete produced a very low strength material. Those facts and the non-technical expansion of existing structures were the main reason of damage and collapse of thousands of buildings.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 4997.:
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