Abstract
The influence of volume fraction and aggregate properties on the mechanical performance of lightweight aggregate concrete (LWAC) were studied. A new Shape Index that described the shape characteristics of lightweight aggregate (LWA) has been proposed and its effects on resulting LWAC were evaluated. Test results substantiate that the proposed Shape Index had a great influence on the mechanical properties of LWAC. Crack development, failure characteristics and stress strain curves of LWAC were studied and the concept of the proportional strain ratio was introduced to evaluate the brittleness of LWAC. Test results showed that higher volume content of LWA resulted in a more brittle failure. It was also found out that for similar concrete strengths, LWAC was comparatively brittle than normal weight concrete (NWC).
| Original language | English |
|---|---|
| Pages (from-to) | 149-158 |
| Number of pages | 10 |
| Journal | Construction and Building Materials |
| Volume | 35 |
| DOIs | |
| Publication status | Published - Oct 2012 |
| Externally published | Yes |
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Keywords
- Compressive strength
- Lightweight aggregate concrete
- Proportional strain ratio
- Shape Index
- Young's modulus
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)
Cite this
Effect of lightweight aggregates on the mechanical properties and brittleness of lightweight aggregate concrete. / Cui, H. Z.; Lo, Tommy Yiu; Memon, Shazim Ali; Xu, Weiting.
In: Construction and Building Materials, Vol. 35, 10.2012, p. 149-158.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of lightweight aggregates on the mechanical properties and brittleness of lightweight aggregate concrete
AU - Cui, H. Z.
AU - Lo, Tommy Yiu
AU - Memon, Shazim Ali
AU - Xu, Weiting
PY - 2012/10
Y1 - 2012/10
N2 - The influence of volume fraction and aggregate properties on the mechanical performance of lightweight aggregate concrete (LWAC) were studied. A new Shape Index that described the shape characteristics of lightweight aggregate (LWA) has been proposed and its effects on resulting LWAC were evaluated. Test results substantiate that the proposed Shape Index had a great influence on the mechanical properties of LWAC. Crack development, failure characteristics and stress strain curves of LWAC were studied and the concept of the proportional strain ratio was introduced to evaluate the brittleness of LWAC. Test results showed that higher volume content of LWA resulted in a more brittle failure. It was also found out that for similar concrete strengths, LWAC was comparatively brittle than normal weight concrete (NWC).
AB - The influence of volume fraction and aggregate properties on the mechanical performance of lightweight aggregate concrete (LWAC) were studied. A new Shape Index that described the shape characteristics of lightweight aggregate (LWA) has been proposed and its effects on resulting LWAC were evaluated. Test results substantiate that the proposed Shape Index had a great influence on the mechanical properties of LWAC. Crack development, failure characteristics and stress strain curves of LWAC were studied and the concept of the proportional strain ratio was introduced to evaluate the brittleness of LWAC. Test results showed that higher volume content of LWA resulted in a more brittle failure. It was also found out that for similar concrete strengths, LWAC was comparatively brittle than normal weight concrete (NWC).
KW - Compressive strength
KW - Lightweight aggregate concrete
KW - Proportional strain ratio
KW - Shape Index
KW - Young's modulus
UR - http://www.scopus.com/inward/record.url?scp=84859631536&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859631536&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2012.02.053
DO - 10.1016/j.conbuildmat.2012.02.053
M3 - Article
VL - 35
SP - 149
EP - 158
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
ER -