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Appl. Sci. 2017, 7(6), 585; doi:10.3390/app7060585

Effect of Different Gradings of Lightweight Aggregates on the Properties of Concrete

1
Building Materials and Construction Chemistry, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
2
Structural Engineering Department, Mansoura University, Elgomhouria St., Mansoura City 35516, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: Peter Van Puyvelde
Received: 20 April 2017 / Revised: 23 May 2017 / Accepted: 1 June 2017 / Published: 7 June 2017
(This article belongs to the Section Materials)
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Abstract

Lightweight aggregate concrete is a material with very low density and good thermal insulation, and several types of lightweight aggregates have been used for lightweight concrete. Since the characteristics of lightweight aggregates strongly affect the properties of lightweight concrete, a proper consideration for the use of lightweight aggregate is very important for development of lightweight materials. In particular, the sizes and spatial distributions of lightweight aggregates can influence the material responses of lightweight concrete, such as compressive strength and thermal conductivity. In this study, different types of gradings of lightweight aggregates are adopted to investigate the effect of gradings on the material properties. Liaver ® , an expanded glass granulate, is used as a lightweight aggregate for the specimens. Virtual models of the lightweight specimens with different gradings are numerically generated, and both mechanical and thermal properties are evaluated using experimental and numerical approaches for more detailed investigation. The obtained results can be utilized to suggest an optimal grading that satisfies both the mechanical and thermal properties of lightweight concrete specimen. View Full-Text
Keywords: lightweight aggregate concrete; grading; material design; thermal conductivity; compressive strength lightweight aggregate concrete; grading; material design; thermal conductivity; compressive strength
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Chung, S.-Y.; Abd Elrahman, M.; Stephan, D. Effect of Different Gradings of Lightweight Aggregates on the Properties of Concrete. Appl. Sci. 2017, 7, 585.

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