Shrinkage modelling for recycled aggregate concretes

DSpace/Manakin Repository

Search OPUS

Advanced Search


My Account

Show simple item record Cabral, E Schalch, V Molin, D Ribeiro, J Sri Ravindrarajah, R 2011-02-07T06:23:29Z 2010-01
dc.identifier.citation IBRACON Structures and Materials Journal, 2010, 3 (1), pp. 1 - 23
dc.identifier.issn 1983-4195
dc.identifier.other C1 en_US
dc.description.abstract Concerns with conservation of nonrenewable resources are propelling academic research regarding the use of recycled aggregates in concrete production. Concreteâs shrinkage is a phenomenon intimately linked to concrete loss of water, which is almost inevitable, since the majority of concrete structures is exposed to an environment where atmospheric humidity is below saturation condition. This paper presents an experimental study where concretes were produced varying water/cement ratio (from 0.4 to 0.8) and type and proportion of construction & demolition waste (concrete, cement, and red ceramic) used as coarse and fine recycled aggregates. Mathematical models correlating such variables with concreteâs shrinkage at 56 and 224 days of age were built. The results indicate that, for the age of 56 days, the data presented excessive variability, revealing only 4 of the 7 tested variables as significant. For the age of 224 days, the proposed model still presented considerable variability, however all tested variables were detected as significant. Results point out that substitution of natural aggregates by recycled aggregates increases shrinkage, being this effect stronger when substitution comprises fine aggregates. The most pronounced effect was associated to the use of recycled concrete fine aggregate. The slightest effect was observed using recycled concrete coarse aggregate.
dc.publisher Brazilian Concrete Institute
dc.relation.isbasedon 10.1021/es5003499
dc.title Shrinkage modelling for recycled aggregate concretes
dc.type Journal Article
dc.parent IBRACON Structures and Materials Journal
dc.journal.volume 1
dc.journal.volume 3
dc.journal.number 1 en_US
dc.publocation Brasil en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage 23 en_US FEIT.School of Civil and Environmental Engineering en_US
dc.conference Verified OK en_US
dc.for 090503 Construction Materials
dc.personcode 880627
dc.percentage 100 en_US Construction Materials en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords recycled aggregate concrete, shrinkage, multiple regression en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
utslib.collection.history Closed (ID: 3)

Files in this item

This item appears in the following Collection(s)

Show simple item record