Mechanical properties of concrete composed of sintered fly ash lightweight aggregate

Puput Risdanareni*, Januarti Jaya Ekaputri, Ike Maulidiyawati, Poppy Puspitasari

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)

Abstract

This paper investigates the effect of sintered fly ash lightweight aggregate as coarse aggregate substitution on the mechanical properties of concrete. The lightweight aggregate (LWA) was produced using the cold bonded method and then sintered at a temperature of 900°C. An alkaliactivated system was applied as a binding agent of the LWA. Fly ash was used as precursor while sodium hydroxide and sodium silicate were employed as alkali activators. Three variations of the LWA dosage were performed, which were 0%, 50%, and 100 % of the volume of coarse aggregate in the concrete mixture. The mechanical properties of the concrete investigated in this research are the compressive strength and split tensile strength. The result showed that the mechanical properties of the concrete slightly decrease along with the increased dosage of the LWA in the mixture. However, employing sintered fly ash the LWA is proven as an effective solution in reducing the concrete density without sacrificing its strength.

Original languageEnglish
Article number01008
JournalMATEC Web of Conferences
Volume195
DOIs
Publication statusPublished - 22 Aug 2018
Event4th International Conference on Rehabilitation and Maintenance in Civil Engineering, ICRMCE 2018 - Solo Baru, Indonesia
Duration: 11 Jul 201812 Jul 2018

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