Lightweight geopolymer concrete containing aggregate from recycle lightweight block

The properties of lightweight geopolymer concrete containing aggregate from recycled lightweight blocks were studied. The recycled blocks were crushed and classified as fine, medium and coarse aggregates. The compressive strength and density with various liquid alkaline/ash ratios, sodium silicate/N...

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Bibliographic Details
Published inMaterials in engineering Vol. 52; pp. 580 - 586
Main Authors Posi, Patcharapol, Teerachanwit, Chaiyapong, Tanutong, Chatchai, Limkamoltip, Suttikait, Lertnimoolchai, Surasit, Sata, Vanchai, Chindaprasirt, Prinya
Format Journal Article
LanguageEnglish
Published 01.12.2013
Subjects
Aggregates
Ashes
Blocking
Compressive strength
Concrete blocks
Density
Lightweight
Water absorption
Weight reduction
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Summary:The properties of lightweight geopolymer concrete containing aggregate from recycled lightweight blocks were studied. The recycled blocks were crushed and classified as fine, medium and coarse aggregates. The compressive strength and density with various liquid alkaline/ash ratios, sodium silicate/NaOH ratios, NaOH concentrations, aggregate/ash ratios and curing temperatures were tested. The porosity, water absorption, and modulus of elasticity were also determined. Results showed that lightweight geopolymer blocks with satisfactory strength and density could be made with a 28-day compressive strength of 1.0-16.0 MPa, density of 860-1400 kg/m3, water absorption of 10-31%, porosity of 12-34%, and modulus of elasticity of 2.9-9.9 GPa. They can be used as lightweight geopolymer concrete blocks for walls and partitions.
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ISSN:0261-3069
DOI:10.1016/j.matdes.2013.06.001