The Application of PVA Fiber to Improve the Mechanical Properties of Geopolymer Concrete

Muhammad Lutfi Manfaluthy*, Januarti Jaya Ekaputri

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)

Abstract

This paper presents an experimental investigation on the improvement of geopolymer concrete properties through the use of polyvinyl alcohol (PVA) fibers mixed in the fresh concrete. For the purpose of obtaining the optimum mechanical properties, the volume fraction of PVA fibers was varied at 0%; 0.3%; 0.5%; ad 0.8%. All mixtures were cast by mixing fly ash, alkali activator, and aggregates. The activator used in this study was a combination of sodium silicate (Na2SiO3) and sodium hydroxide (NaOH). The mechanical properties of geopolymer concrete were obtained from the results of compressive strength, splitting strength, uniaxial tensile strength, elastic modulus, and flexural strength. It is found that the variation of 0.8% PVA fibers resulted in the highest strength for overall test. The utilization of 0.8% PVA fibers also contributed to increasing the direct tensile up to 50%. However, it is noticed that the elastic modulus was more prone to decrease as the fiber content in the mixture increased.

Original languageEnglish
Article number01020
JournalMATEC Web of Conferences
Volume138
DOIs
Publication statusPublished - 30 Dec 2017
Event6th International Conference of Euro Asia Civil Engineering Forum, EACEF 2017 - Seoul, Korea, Republic of
Duration: 22 Aug 201725 Aug 2017

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