Evaluation of the mechanical properties of class-F fly ash

2008 ◽  
Vol 28 (3) ◽  
pp. 649-659 ◽  
Author(s):  
Bumjoo Kim ◽  
Monica Prezzi
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Class F Fly Ash ◽  
Class F

Statistical evaluation of the mechanical properties of high-volume class F fly ash concretes

2014 ◽  
Vol 54 ◽  
pp. 432-442 ◽  
Author(s):  
Seyoon Yoon ◽  
Paulo J.M. Monteiro ◽  
Donald E. Macphee ◽  
Fredrik P. Glasser ◽  
Mohammed Salah-Eldin Imbabi
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Statistical Evaluation ◽  
High Volume ◽  
Class F Fly Ash ◽  
Class F

scholarly journals Synthesis of Geopolymer Based Class-F Fly Ash Aggregates and its Composite Properties in Concrete

2014 ◽  
Vol 60 (1) ◽  
pp. 55-75 ◽  
Author(s):  
P. Gomathi ◽  
A. Sivakumar
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Physical And Mechanical Properties ◽  
Engineering Properties ◽  
Polymerization Reaction ◽  
Hardened Concrete ◽  
Different Types ◽  
Class F Fly Ash ◽  
Ash Aggregates ◽  
Class F

Abstract This study explores the influence of alkali activators on the initiation of polymerization reaction of alumino-silicate minerals present in class-F fly ash material. Different types of fly ash aggregates were produced with silicate rich binders (bentonite and metakaolin) and the effect of alkali activators on the strength gain properties were analyzed. A comprehensive examination on its physical and mechanical properties of the various artificial fly ash aggregates has been carried out systematically. A pelletizer machine was fabricated in this study to produce aggregate pellets from fly ash. The efficiency and strength of pellets was improved by mixing fly ash with different binder materials such as ground granulated blast furnace slag (GGBS), metakaolin and bentonite. Further, the activation of fl y ash binders was done using sodium hydroxide for improving its binding properties. Concrete mixes were designed and prepared with the different fly ash based aggregates containing different ingredients. Hardened concrete specimens after sufficient curing was tested for assessing the mechanical properties of different types concrete mixes. Test results indicated that fly ash -GGBS aggregates (30S2-100) with alkali activator at 10M exhibited highest crushing strength containing of 22.81 MPa. Similarly, the concrete mix with 20% fly ash-GGBS based aggregate reported a highest compressive strength of 31.98 MPa. The fly ash based aggregates containing different binders was found to possess adequate engineering properties which can be suggested for moderate construction works.

scholarly journals Effect on Mechanical Properties of M25 SCC with Variation of Class - F Fly Ash and GGBS

2018 ◽  
Vol 11 (No. 07) ◽  
pp. 70-77
Author(s):  
B. Bhavani ◽  
C. Krishnama Raju ◽  
Syed Talha Zaid
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
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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