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    A study on relationship between porosity and compressive strength for geopolymer paste

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    A study on relationship between porosity and compressive strength for geopolymer paste.pdf (191.2Kb)
    Date
    2013-12
    Author
    Farah Farhana, Zainal
    Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.
    Azmi, Rahmat, Prof.
    Mohd Mustafa Al-Bakri, Abdullah
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    Abstract
    This paper presents a study on the relationship between porosity and compressive strength for geopolymer paste. In this research, geopolymer paste was made from fly ash class F based geopolymer mixed with alkaline activator; sodium hydroxide solution and sodium silicate solution. Twelve mixes were cast in 50mm x 50mm x 50mm moulds and the samples were cured for 24 hrs at 60 °C in the oven. The samples were examined after 7, 14, 28 and 90 days in terms of porosity test, pulse velocity test and compressive strength test. It was concluded that the sample at day 90 had the highest compressive strength of 56.50 N/mm2 had porosity 3.77%. Thus, the sample with lowest porosity had highest pulse velocity 3303 m/s during ultrasonic testing with lowest transmission time 15.17 μs. Keywords: porosity, compression strength, geopolymer, pulse velocity
    URI
    http://www.scientific.net/KEM.594-595.1112
    http://dspace.unimap.edu.my:80/dspace/handle/123456789/33941
    Collections
    • Azmi, Rahmat, Assoc. Prof. Dr. [26]
    • Mohd Mustafa Al Bakri Abdullah, Prof. Dr. [277]
    • Center of Excellence for Geopolymer and Green Technology (CEGEOGTECH) (Articles) [130]
    • Kamarudin Hussin, Brig. Jen. Datuk Prof. Dr. [252]
    • School of Materials Engineering (Articles) [553]

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