Effect of gypsum on free and restrained shrinkage behaviour of slag-concretes subjected to various curing conditions

Effect of gypsum on free and restrained shrinkage behaviour of slag-concretes subjected to various curing conditions

The effect of gypsum in slag-blended cement on free and restrained shrinkage of concrete subjected to various curing conditions is presented in this paper. Added gypsum in slag-blended cements was found to increase the autogenous shrinkage of concrete up to 56 days. However, added gypsum caused smal...

Full description

Saved in:
Bibliographic Details
Published in:Materials and structures Vol. 41; no. 8; pp. 1393 - 1403
Main Authors: Aly, Tarek K., Sanjayan, Jay G.
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-10-2008
Springer
Springer Nature B.V
Subjects:
Applied sciences
Building construction
Building Materials
Buildings. Public works
Cement
Civil Engineering
Concrete
Concretes. Mortars. Grouts
Engineering
Exact sciences and technology
General (composition, classification, performance, standards, patents, etc.)
Machines
Manufacturing
Materials
Materials Science
Original Article
Processes
Solid Mechanics
Theoretical and Applied Mechanics
Slag
Gypsum
Cracking
Concrete
Shrinkage
Shrinkage cracking
Concrete curing
Creep
Construction materials
Concrete mix design
Experimental study
Portland cement
Shrinkage, Cracking
Slag, Gypsum
Behavior
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of gypsum in slag-blended cement on free and restrained shrinkage of concrete subjected to various curing conditions is presented in this paper. Added gypsum in slag-blended cements was found to increase the autogenous shrinkage of concrete up to 56 days. However, added gypsum caused small reduction in the long-term shrinkage when the concrete was exposed to drying. Slag concretes with 3% added gypsum content, when exposed to drying at the age of 24 h, exhibited more cracking tendency than comparable concrete with 0% added gypsum. This is attributed to the increased shrinkage evolution of slag concrete with 3% gypsum content at early ages. However, if moist cured for 7 days, increasing the amount of gypsum from 3 to 5% in slag-blended cement reduced the cracking tendency. It is concluded that the beneficial effect of increasing gypsum in reducing cracking tendency in slag concrete is only favourable if moist cured for 7 days.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-007-9337-7