Table · dataset · 2026
A mix design approach and evaluation of mechanical properties, shrinkage and non-destructive performance of fly ash-sugarcane bagasse ash geopolymer concrete
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<p>Environmental pressures associated with cement production and waste disposal are driving the development of geopolymer concrete incorporating fly ash (FA) and sugarcane bagasse ash (SCBA).
Description
This study developed a two-stage mix-design framework for FA-SCBA geopolymer concrete. In Stage 1, 60 mixtures were evaluated using SCBA content (0–20%), total aggregate-to-concrete ratio (T<sub>agg</sub>/T<sub>con</sub> = 65–75%) and coarse-to-total aggregate ratio (C<sub>agg</sub>/T<sub>agg</sub> = 65–80%).
Reducing T<sub>agg</sub>/T<sub>con</sub> from 75% to 65% increased the average 28-day compressive strength from 29.65 to 47.46 MPa. At 10% SCBA, the average compressive strength reached 40.77 MPa, while C<sub>agg</sub>/T<sub>agg</sub> = 70% yielded 39.63 MPa. For Stage 2, the configuration achieving compressive strength above 30 MPa while minimising binder content was selected, with T<sub>agg</sub>/T<sub>con</sub> and C<sub>agg</sub>/T<sub>agg</sub> fixed at 70%.
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Under these conditions, 15% SCBA achieved the highest compressive strength of 42.67 MPa, whereas 10% SCBA yielded the highest flexural and splitting tensile strengths of 4.92 and 4.23 MPa, respectively. The 90-day shrinkage decreased from 0.075% for the control to 0.023% at 15% SCBA. Compressive strength correlated strongly with ultrasonic pulse velocity and rebound number.
FTIR analysis indicated a pronounced Si–O–T band, consistent with changes associated with geopolymerization. These findings provide a quantitative basis for FA-SCBA geopolymer concrete design in sustainable construction.</p>
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- DOI doi.org/10.6084/m9.figshare.33944613.v1 ↗
DOI / persistent id · from figshare com
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
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Topics
Provenance · 1 source records, 17 field assertions
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|---|---|---|---|
| figshare | oai:figshare.com:article/33944613 | 9 d ago | JSON v1 |
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