Effect of coarse aggregate blending on short-term mechanical properties of self compacting concrete

► Effect of coarse aggregate blending on mechanical properties of SCC is studied. ► A new parameter called CAPs (coarse aggregate points) has been introduced. ► Effect of Class F fly ash has been studied. ► SCC Mechanical properties have been compared with the predicted equations. ► Recommendation o...

Full description

Saved in:
Bibliographic Details
Published in:Materials in engineering 2013-01, Vol.43, p.185-194
Main Authors: Guru Jawahar, J., Sashidhar, C., Ramana Reddy, I.V., Annie Peter, J.
Format: Article
Language:English
Subjects:
ACI
Aggregates
Blending
Cements
Compressive strength
Mathematical analysis
Mechanical properties
Mixes
Self-compacting concrete
Tensile strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► Effect of coarse aggregate blending on mechanical properties of SCC is studied. ► A new parameter called CAPs (coarse aggregate points) has been introduced. ► Effect of Class F fly ash has been studied. ► SCC Mechanical properties have been compared with the predicted equations. ► Recommendation of SCC mixes with medium compressive strength. This investigation is mainly focused on finding the unit weight, compressive strength, modulus of elasticity (MOE) and splitting tensile strength (STS) of SCC mixes with different coarse aggregate blending (60:40 and 40:60) (20mm and 10mm) and coarse aggregate content (28% and 32%) and these properties were compared to a conventional concrete (CC). All SCC mixes had 35% replacement of cement with class F fly ash. The coarse aggregate blending did not affect the compressive strength of SCC mixes, but it affected the unit weight, MOE and STS of SCC mixes. A new parameter called coarse aggregate points (CAPs) has been introduced to study the effect of coarse aggregate blending in a particular coarse aggregate content on mechanical properties of SCC mixes. It is observed that for the given strength, SCC mixes with the same CAP value have shown similar mechanical properties. The measured MOE of all mixes were compared with ACI 363R and AASHTO LRFD/ACI 318 predicted equations. The measured STS of all mixes were compared with ACI 363R and CEB-FIP predicted equations.
ISSN:0261-3069
DOI:10.1016/j.matdes.2012.06.063