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A study on the performance of lightweight selfconsolidated concrete
Author
Source
Housing and Building National Research Center Journal
Issue
Vol. 3, Issue 3 (31 Dec. 2007), pp.10-22, 13 p.
Publisher
Housing and Building National Research Center
Publication Date
2007-12-31
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
This paper presents a study on the fresh and hardened characteristics of lightweight aggregate concrete incorporating self-consolidated agent (LWSCC).
Self-consolidated agent (a polycarboxylic-based superplasticizer in combination with a viscosity modifying admixture) and local-produced lightweight aggregate (LWA) produced from expanded clay type were utilized.
Various LWSCC mixes made with different mix proportions, namely dosage of self-consolidated agent, water / cement ratio, LWA / Sand ratio and normal weight aggregate as a partial replacement of LWA, were prepared.
The initial slump flow, rate of slump flow loss and air content were then performed to assess the fresh properties of LWSCC.
Twenty-eight day compressive strength, ultrasonic pulse velocity, porosity and density were determined for investigating the hardened properties of LWSCC.
The results reveal that, by using local produced materials, it is possible to manufacture a structural lightweight aggregate concrete with low density and high self-consolidating characteristics (flowability, deformability and stability).
Both fresh and hardened characteristics of LWSCC are mainly controlled by dosage of self-consolidated agent (SCA), where the flowability, self-compactability, strength, homogeneity and porosity of LWSCC can be enhanced with increasing SCA content up to certain dosage of SCA (≈0.80), at which all these characteristics would start to decline with increasing SCA content.
However, LWSCC losses its fresh parameters rapidly with increasing the dosage of SCA and lightweight aggregate / sand ratio.
The results also showed that the compressive strength, homogeneity and porosity of LWSCC could be significantly improved with reducing the ratio of w/c and LWA / Sand ratio, and utilizing normal weight aggregate in LWSCC mixes.
American Psychological Association (APA)
Abd al-Aziz, Jamal al-Sayyid. 2007. A study on the performance of lightweight selfconsolidated concrete. Housing and Building National Research Center Journal،Vol. 3, no. 3, pp.10-22.
https://search.emarefa.net/detail/BIM-33122
Modern Language Association (MLA)
Abd al-Aziz, Jamal al-Sayyid. A study on the performance of lightweight selfconsolidated concrete. Housing and Building National Research Center Journal Vol. 3, no. 3 (Dec. 2007), pp.10-22.
https://search.emarefa.net/detail/BIM-33122
American Medical Association (AMA)
Abd al-Aziz, Jamal al-Sayyid. A study on the performance of lightweight selfconsolidated concrete. Housing and Building National Research Center Journal. 2007. Vol. 3, no. 3, pp.10-22.
https://search.emarefa.net/detail/BIM-33122
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 22
Record ID
BIM-33122