Bond strength between blended slag and Class F fly ash geopolymer concrete with steel reinforcement
Source abstract
Abstract
Abstract In this paper, geopolymer concrete bond with both deformed and smooth reinforcing steel bars is investigated using the standard RILEM pull-out test. The geopolymer binder is composed of 85.2% of low calcium fly ash and 14.8% of ground granulated blast furnace slag (GGBFS). The tests were aimed to assess the development of the bond strength from 24 h to 28 days after casting, with different heat curing conditions. The results show that 48 h of heat curing at 80 °C is required in order to obtain similar or better performances to those of the reference 45 MPa OPC concrete. The 28-day bond strength and the overall bond stress–slip behaviour of the geopolymer concrete were similar to those previously reported for OPC-based concretes. Providing intensive heat curing, high early bond strength can be achieved showing that Class F fly ash geopolymer concrete is well suited for precast applications.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Advanced ceramic materials synthesis
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References (24)
Show source-provided references
1. Geopolymer technology: the current state of the art10.1007/s10853-006-0637-z ↗
2. Sustainability with ultrahigh-performance and geopolymer concrete construction, innovative materials and techniques in concrete construction
3. Provis · 2009
4. Effect of pore-size distribution on shrinkage of concretes10.1061/(ASCE)0899-1561(2010)22:5(525) ↗
5. Geopolymer concrete with fly ash
6. Role of oxide ratios on engineering performance of fly-ash geopolymer binder systems
7. Engineering properties of inorganic polymer concretes (IPCs)10.1016/j.cemconres.2006.10.008 ↗
8. Engineering properties of alkali-activated fly ash concrete
9. Bond performance of reinforcing bars in inorganic polymer concretes (IPCs)10.1007/s10853-006-0534-5 ↗
10. Anchorage of steel bars in concrete by geopolymer paste10.1016/j.matdes.2011.01.048 ↗
11. Bond strength of reinforcing steel embedded in fly ash-based geopolymer concrete10.1617/s11527-010-9683-8 ↗
12. ASTM A 944–99 · 1999
13. Essai portant sur l'adhérence des armatures du béton: essai par traction
14. Development of a mix design methodology for high-performance geopolymer mortars10.1002/suco.201200018 ↗
15. Effect of surface pre-conditioning on bond of carbon fiber reinforced polymer rods to concrete10.1016/j.cemconcomp.2007.04.010 ↗
16. Bond and cracking properties of self-consolidating concrete10.1016/j.conbuildmat.2009.12.017 ↗
17. CEB-FIP · 2010
18. Local bond stress–slip relationships of deformed bars under generalized excitations
19. Artificial neural network model for steel–concrete bond prediction10.1016/j.engstruct.2009.02.010 ↗
20. Alkali-activated fly ashes A cement for the future10.1016/S0008-8846(98)00243-9 ↗
21. Microstructure development of alkali-activated fly ash cement: a descriptive model10.1016/j.cemconres.2004.08.021 ↗
22. Alkali-activated fly ash: effect of thermal curing conditions on mechanical and microstructural development—Part II10.1016/j.fuel.2006.07.010 ↗
23. Carbon dioxide equivalent (CO2-e) emissions: a comparison between geopolymer and OPC cement concrete10.1016/j.conbuildmat.2013.01.023 ↗
24. Green house gas emissions due to concrete manufacture10.1065/lca2007.05.327 ↗