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Effect of casting sequences on the restraint in slab-on-ground
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.ORCID-id: 0000-0002-3459-2855
2014 (engelsk)Konferansepaper, Oral presentation only (Fagfellevurdert)
Abstract [en]

One of the widespread issues in concrete structures is cracks occurring at early age. Cracks that appear in the young concrete may cause early start of corrosion of rebars or early penetration of harmful liquids or gases into the concrete body. These situations could result in reduced service life and in significantly increased maintenance cost of structures. Therefore it is important for construction companies to avoid these cracks. Restraint represents one of the main sources of thermal and shrinkage stresses at early age concrete. The casting sequence is affected by the restraint from adjacent structures. The present study discusses the influence of five casting sequences for the typical structure slab-on-ground. The aim is to map restraints for a number of possible casting sequences, and to identify the sequence with the lowest restraint. The study covers both continuous and jumped casting sequences, which include one, two and three contact edges. The result shows that the best casting sequence is the continuous technique with one contact edge

sted, utgiver, år, opplag, sider
2014.
Emneord [en]
Restraint cracks, through cracking, early age concrete, casting sequence, slab-on-ground., Civil engineering and architecture - Building engineering
Emneord [sv]
Samhällsbyggnadsteknik och arkitektur - Byggnadsteknik
HSV kategori
Forskningsprogram
Konstruktionsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-27959Lokal ID: 1952cb57-ba4e-470c-99d8-1bc91a56dafaOAI: oai:DiVA.org:ltu-27959DiVA, id: diva2:1001150
Konferanse
Concrete Innovation Conference : 11/06/2014 - 13/06/2014
Merknad
Godkänd; 2014; 20140618 (majali)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-03-26bibliografisk kontrollert

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