Evaluation of Compressive and Shear Strength Characteristics in High Volume Fly Ash Concrete

2014 ◽  
Vol 584-586 ◽  
pp. 1282-1288 ◽  
Author(s):  
Sung Won Yoo ◽  
Sang Hwa Jung ◽  
Seung Jun Kwon
Keyword(s):  
Shear Strength ◽  
Fly Ash ◽  
Construction Material ◽  
Cost Benefit ◽  
High Volume ◽  
Engineering Properties ◽  
Fly Ash Concrete ◽  
High Volume Fly Ash ◽  
Basic Parameters ◽  
Paper Engineering

HVFAC (High Volume Fly Ash Concrete) is an attractive construction material with cost benefit and reduced CO2emission. In this paper engineering properties such as compressive and shear strength are evaluated and their characteristics are investigated. For this work HVFAC with FA (Fly Ash) replacement ratio of 35% and 50% are prepared and strength (compressive, shear, and bond) are measured with basic parameters like elasticity and ultimate strain. Test results are compared with conventional predictions from Korea Structural Code and their applicabilities are evaluated. In bond strength and elasticity in HVFAC are evaluated to need reasonable coefficients for HVFAC design.

Nanosilica Activated High Volume Fly Ash Concrete: Effects on Selected Properties

2016 ◽  
Vol 722 ◽  
pp. 157-162 ◽  
Author(s):  
Martin Labaj ◽  
Rudolf Hela ◽  
Iveta Hájková
Keyword(s):  
Fly Ash ◽  
Raw Materials ◽  
Water Pressure ◽  
Construction Material ◽  
High Volume ◽  
Strength Development ◽  
Early Age ◽  
Fly Ash Concrete ◽  
High Volume Fly Ash ◽  
Static And Dynamic Moduli

By volume, there is no other material used as much as concrete. Its mechanical properties, durability and favorable price makes concrete the perfect construction material. In last few decades, we are seeing a growing trend of partial Portland cement’s replacement with secondary raw materials, most commonly with fly ash. So-called high volume fly ash (HVFA) concretes usually contains over 50% of it. While HVFA concrete’s long-term properties and price are improved over the classical one, its early age properties are often affected negatively. Here, a highly reactive pozzolans enters the scene. Materials like microsilica and metakaolin are known to accelerate concrete’s strength development and improve early age characteristics. In this paper, nanosilica is used for this purpose. These SiO2 nanoparticles possesses a much higher surface area and thus reactivity. Three mixtures with 0, 40 a 60% portland cement’s replacement with fly ash were prepared and tested with and without addition of small amount of nanosilica. Effects on compressive strength, static and dynamic moduli of elasticity and resistivity against water pressure were observed. Results clearly demonstrates that even with dosage in the range of tenths of percent, nanosilica can significantly improve concrete’s properties.

Effect of total cementitious content on shear strength of high-volume fly ash concrete beams

2013 ◽  
Vol 46 ◽  
pp. 301-309 ◽  
Author(s):  
Mahdi Arezoumandi ◽  
Jeffery S. Volz ◽  
Carlos A. Ortega ◽  
John J. Myers
Keyword(s):  
Shear Strength ◽  
Fly Ash ◽  
Concrete Beams ◽  
High Volume ◽  
Fly Ash Concrete ◽  
High Volume Fly Ash

Engineering properties of lightweight aggregate concrete containing limestone powder and high volume fly ash

2016 ◽  
Vol 135 ◽  
pp. 148-157 ◽  
Author(s):  
Payam Shafigh ◽  
Mohammad A. Nomeli ◽  
U. Johnson Alengaram ◽  
Hilmi Bin Mahmud ◽  
Mohd Zamin Jumaat
Keyword(s):  
Fly Ash ◽  
Lightweight Aggregate ◽  
High Volume ◽  
Limestone Powder ◽  
Engineering Properties ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
High Volume Fly Ash

Long term mechanical performance of nano-engineered high volume fly ash concrete

2021 ◽  
pp. 103168
Author(s):  
Charith Herath ◽  
Chamila Gunasekara ◽  
David W. Law ◽  
Sujeeva Setunge
Keyword(s):  
Fly Ash ◽  
Mechanical Performance ◽  
High Volume ◽  
Fly Ash Concrete ◽  
High Volume Fly Ash
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