Abstract
This study assesses the characteristics of preplaced aggregate concrete prepared with alkali-activated cement grout as an adhesive binder. Various binary blends of slag and fly ash without fine aggregate as a filler material were considered along with different solution-to-solid ratios. The properties of fresh and hardened grout along with the properties of hardened preplaced concrete were investigated, as were the compressive strength, ultrasonic pulse velocity, density, water absorption and total voids of the preplaced concrete. The results indicated that alkali-activated cement grout has better flowability characteristics and compressive strength than conventional cement grout. As a result, the mechanical performance of the preplaced aggregate concrete was significantly improved. The results pertaining to the water absorption and porosity revealed that the alkali-activated preplaced aggregate concrete is more resistant to water permeation. The filling capacity based on the ultrasonic pulse velocity value is discussed to comment on the wrapping ability of alkali-activated cement grout.
| Original language | English |
|---|---|
| Article number | 591 |
| Pages (from-to) | 1-17 |
| Number of pages | 17 |
| Journal | Materials |
| Volume | 14 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1 Feb 2021 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords
- Alkali-activated cement
- Compressive strength
- Filling capacity
- Preplaced concrete
- Total voids
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
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