@article{MAKHILLJEAS201914317403,
    title = {Effect of Cooling Method on Residual Properties of Sustainable Fiber
Reinforced SCC Exposed to Elevated Temperature},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {14},
    number = {3},
    pages = {887-897},
    year = {2019},
    issn = {1816-949x},
    doi = {jeasci.2019.887.897},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2019.887.897},
    author = {Mohammed,Shakir and},
    keywords = {Eco-friendly,fiber reinforced (FSCC),elevated temperature,UPV,class F fly ash,high volume},
    abstract = {The current research presents an experimental investigation on the influence of cooling regime on
the residual mechanical properties and cracking development of fiber reinforced eco-Friendly Self-Consolidating
Concrete (FSCC). Seven Sustainable (FSCC) mixes containing high volume class F fly ash and locally available
Cement Kiln Dust (CKD) were subjected to four high temperature degrees (200, 400, 600 and 800°C) for 2 h. After
that, the specimens were cooled either slowly (air cooling) or quickly (water spraying cooling) and the residual
compressive strength, flexural strength, modulus of elasticity, Ultrasonic Pulse Velocity (UPV), mass loss and
both color change and cracks development were determined. The results indicated, for both cooling techniques,
that FSCC with high volume class F fly ash showed best residual mechanical properties when exposed to
elevated temperature compared to other mixes. At 800°C, the relative residual compressive strength, flexural
strength and modulus of elasticity were 62, 65, 71, 51, 53, 60, 29, 32, 33, 24, 26, 28, 31, 32, 34, 23, 24, 25% for 40,
50, 60% fly ah mixes air and water cooled, respectively. Visual examination of the specimens showed that the
color is gradually lightened as the temperature exposure increases and the cracks developed more severely,
especially in water cooled pure and cement kiln dust FSCC mixes while in fly ash FSCC mixes smaller network
minor surface cracks is observed. At 400°C air cooled fly ash FSCC mixes are classified as good quality mix
while other mixes were doubtful based on (UPV). The weight loss is congruent with the residual mechanical
properties and the visual inspection of the studied FSCC mixes.}
    }