Influence of Silica Fume and Class F Fly Ash on Mechanical and Rheological Properties and Freeze-Thaw Durability of Self-Compacting Mortars

2018 ◽  
Vol 32 (3) ◽  
pp. 04018009 ◽  
Author(s):  
Ahmet Benli ◽  
Kazim Turk ◽  
Ceren Kina
Keyword(s):  
Fly Ash ◽  
Rheological Properties ◽  
Silica Fume ◽  
Freeze Thaw ◽  
Class F Fly Ash ◽  
Class F

Freeze-thaw resistance of Class F fly ash-based geopolymer concrete

2019 ◽  
Vol 222 ◽  
pp. 474-483 ◽  
Author(s):  
Renda Zhao ◽  
Yuan Yuan ◽  
Zhengqing Cheng ◽  
Tian Wen ◽  
Jian Li ◽  
...  
Keyword(s):  
Fly Ash ◽  
Geopolymer Concrete ◽  
Freeze Thaw ◽  
Class F Fly Ash ◽  
Class F

scholarly journals Enhancement the Performance of Asphalt Pavement Using Fly Ash Wastes in Saudi Arabia

2018 ◽  
Vol 7 (3.32) ◽  
pp. 50
Author(s):  
Mohammed Dahim ◽  
. .
Keyword(s):  
Saudi Arabia ◽  
Fly Ash ◽  
Rheological Properties ◽  
Asphalt Pavement ◽  
Toxic Substance ◽  
Arab Country ◽  
Toxic Waste ◽  
Class C ◽  
Class F Fly Ash ◽  
Class F

Saudi Arabia is the largest Arab country and is one of the most prolific producers of oil and energy consumption. The Kingdom uses heavy oil and diesel to generate electricity and desalinate seawater. This produces large amounts of ash, a toxic substance that is disposed of by landfill and may cause many environmental problems and contribute to pollution of groundwater, which is one of the most important sources of drinking water. This paper presents the possibility of using fly ash by-product waste from electric power generation plants to improve the properties of asphalt mixtures. This study investigates the use of two types of fly ash namely; class C and class F was used as a filler in two types of bitumen and asphalt material known as AC 40/50 and AC 60/70. The rheological performance of asphalt with different percentages of fly ash filler ranging from 0% to 10% with an increment of 2% was tested. The rheological properties of both asphalts modified using both types of ash were determined. The rutting factors of the modified asphalt with fly ash content were calculated using the rheological properties. The result indicates that rutting resistance of asphalt could be improved by both types of fly ash which can be lead to reduces the costs of repairing and rehabilitation of asphalt pavement and reduce environmental impacts of a significant amount of toxic waste fly ash. Class F fly ash shows higher rutting factor than class C. Also AC 60/70 asphalt possess higher rutting factor than AC 40/50 asphalt at both low and high temperature.  

Freeze-thaw durability of red mud slurry-class F fly ash-based geopolymer: Effect of curing conditions

2019 ◽  
Vol 215 ◽  
pp. 381-390 ◽  
Author(s):  
Mengxuan Zhao ◽  
Guoping Zhang ◽  
Khant Win Htet ◽  
Minji Kwon ◽  
Chunyuan Liu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Red Mud ◽  
Curing Conditions ◽  
Freeze Thaw ◽  
Class F Fly Ash ◽  
Class F

scholarly journals Natural Pozzolan as a Partial Substitute for Cement in Concrete

2013 ◽  
Vol 7 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Ghassan K. Al-Chaar ◽  
Mouin Alkadi ◽  
Panagiotis G. Asteris
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Portland Cement ◽  
Silica Fume ◽  
Test Series ◽  
Natural Pozzolan ◽  
Industry Standards ◽  
Concrete Materials ◽  
Class F Fly Ash ◽  
Class F

In this paper, the use of natural pozzolan as a partial cement substitute in concrete materials is investigated. By means of a test series, four mixes using three types of natural pozzolan, as well as a Class F fly ash, are evaluated. The effectiveness of each pozzolan in controlling alkali-silica reactions has been studied. Correlations have been revealed between the mechanical properties of the proposed mixes and a Portland cement control mix. The results are also compared with industry standards for mortars made with fly ash and silica fume. The paper's findings indicate that one type of pozzolan may be used as a substitute for fly ash, but not for silica fume.

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