000020051 001__ 20051
000020051 005__ 20170118182352.0
000020051 04107 $$aeng
000020051 046__ $$k2017-01-09
000020051 100__ $$aNikolaou, S.
000020051 24500 $$aInfluence of Construction Materials on Seismic Performance of Buildings After Ecuador M7.8 Earthquake

000020051 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020051 260__ $$b
000020051 506__ $$arestricted
000020051 520__ $$2eng$$aMore 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.

000020051 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020051 653__ $$aseismic damage, low strength concrete, sea sand, mylonitization, chloride content, building collapse

000020051 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020051 720__ $$aNikolaou, S.$$iYepez, Fabricio$$iYepez, O.$$iVera, Xavier
000020051 8560_ $$ffischerc@itam.cas.cz
000020051 8564_ $$s1507688$$uhttps://invenio.itam.cas.cz/record/20051/files/4997.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4997.
000020051 962__ $$r16048
000020051 980__ $$aPAPER