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- Title
Current Challenges in Average Residual Strength Evaluation of K-Silicate-Based Fiber-Reinforced Geopolymer Concrete.
- Authors
Rathod, Harsh; Gupta, Rishi; Chen Yang; Dave, Urmil; Garg, Mohit
- Abstract
The significant CO2 gas emission associated with manufacturing of conventional portland cement and its environmental hazard has led to the development of alternate cement binders, one of which is geopolymer concrete (GC). The research work focused on characterizing GC properties, such as workability, compressive strength, and average residual strength. A fiber-reinforced GC manufactured only using fly ash and K-silicate solution alone had poor workability, rapid hardening, low compressive strength, and residual strength at ambient curing conditions. However, for another mixture, the compressive strength was increased by more than three times (from 5.3 to 21.7 MPa [0.77 to 3.15 ksi]) when cured at 60ºC (140°F) for 24 hours. On the other hand, it has been found that GC has more determination capacity than the normal cement concrete. As a result, the current form of ASTM standard C1399 for normal concrete cannot be used for evaluating average residual strength (ARS) of fiber-reinforced GC.
- Subjects
FIBER-reinforced concrete; FIBER-reinforced concrete testing; PORTLAND cement manufacturing; PORTLAND cement industry; CONCRETE testing; STRENGTH of materials; INDUSTRY &; the environment
- Publication
ACI Materials Journal, 2018, Vol 115, Issue 4, p557
- ISSN
0889-325X
- Publication type
Article
- DOI
10.14359/51702189