Mechanical properties and freeze-thaw resistance of lightweight aggregate concrete using artificial clay aggregate

Abstract: This work intends to make structural lightweight aggregate concrete by using artificial expanded clay aggregate with different replacement levels from normal coarse aggregate and improve it with a high-performance superplasticizer to increase its strength. The mechanical characteristics covered in the present work were compressive strength, flexural strength, and splitting tensile strength in addition to freezing and thawing resistance. Different densities were found for all mixes ranging between normal and lightweight concrete and that depends on the replacement of normal aggregate with lightweight aggregates. Mixes with replacement exceeding 25% give compressive strength less than 17 MPa and cannot be regarded as structural lightweight concrete. Modified mixes give higher values of mechanical properties, and also some non-structural lightweight concrete mixes were improved to structural lightweight concrete by using PC-superplasticizer in this study. The research also includes freezing and thawing cycles on reference mixes and lightweight mixes. Lightweight mixes give high durability against freeze-thaw cycles where the reduction in compressive strength was 6.2, 4.6, and 5.5% for 10% rep, 15% rep, and 20% rep mixes, respectively, compared with 32.2% reduction for reference mix.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Mechanical properties and freeze-thaw resistance of lightweight aggregate concrete using artificial clay aggregate ; volume:12 ; number:1 ; year:2022 ; pages:323-331 ; extent:9
Open engineering ; 12, Heft 1 (2022), 323-331 (gesamt 9)

Urheber
Al-Dikheeli, Mohammed Riyadh
Thaib, Hasanein M.
Alasadi, Layth AbdulRasool

DOI
10.1515/eng-2022-0019
URN
urn:nbn:de:101:1-2022071514555730945686
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 14:21 MESZ

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Beteiligte

  • Al-Dikheeli, Mohammed Riyadh
  • Thaib, Hasanein M.
  • Alasadi, Layth AbdulRasool

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