Improvement in concrete behavior with fly ash, silica-fume and coconut fibres

Khan, Mehran; Ali, Majid

doi:10.1016/j.conbuildmat.2019.01.103

Cited by 207 publications

(105 citation statements)

References 29 publications

Supporting

Mentioning

104

Contrasting

Unclassified

Order By: Relevance

“…Thus, it was concluded that MSCFRC with an optimized silica fume (15%), coconut fiber (2%), and super plasticizer (1%) content can be used for civil engineering applications. An analysis of the mechanical properties of fly ash silica-fume plain concrete (FA-SPC) and fly ash silica-fume coconut fiber reinforced concrete (FA-SCFRC) was performed by Khan and Ali [28]. The percentages of the different materials were taken by cement mass, e.g., silica fume comprised 15% and fly ash 0%, 5%, 10%, and 15%.…”

Section: Coconut Fiber With Mineral Admixture In Concretementioning

confidence: 99%

See 1 more Smart Citation

Effect of Coconut Fiber Length and Content on Properties of High Strength Concrete

et al. 2020

Self Cite

View full text Add to dashboard Cite

Recently, the addition of natural fibers to high strength concrete (HSC) has been of great interest in the field of construction materials. Compared to artificial fibers, natural fibers are cheap and locally available. Among all natural fibers, coconut fibers have the greatest known toughness. In this work, the mechanical properties of coconut fiber reinforced high strength concrete (CFR-HSC) are explored. Silica fume (10% by mass) and super plasticizer (1% by mass) are also added to the CFR-HSC. The influence of 25 mm-, 50 mm-, and 75 mm-long coconut fibers and 0.5%, 1%, 1.5%, and 2% contents by mass is investigated. The microstructure of CFR-HSC is studied using scanning electron microscopy (SEM). The experimental results revealed that CFR-HSC has improved compressive, splitting-tensile, and flexural strengths, and energy absorption and toughness indices compared to HSC. The overall best results are obtained for the CFR-HSC having 50 mm long coconut fibers with 1.5% content by cement mass.

show abstract

Section: Coconut Fiber With Mineral Admixture In Concretementioning

confidence: 99%

“…The benefits of natural fibers may also be considered from an environmental perspective. These fibers are inexpensive and are generally otherwise disregarded as waste [28,29]. Coconut fiber has the greatest toughness among all known natural fibers, which is the main reason for its selection in the current study.…”

Section: Significance Of Current Workmentioning

confidence: 99%

Effect of Coconut Fiber Length and Content on Properties of High Strength Concrete

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Consequently, the additives usage in CBG applications reduce the charge of the application but increment the flowability and the strength. Also, Singh et al (2019), Khan et al (2019) and Singh et al (2017) investigated the use of Portland cement with FA and WMP in concrete. They pointed out that the binary composition of the binders provided economic and environmental advantages by reducing Portland cement (PC) production, thus CO2 emission [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Waste Marble Powder and Fly Ash on the Rheological Characteristics of Cement Based Grout

2019

View full text Add to dashboard Cite

This paper shows the results of an experimental study conducted to research the impact of waste marble powder (WMP) and fly ash (FA) on the fluidity (marsh cone flow time (MCFT), mini-slump diameter and plate cohesion meter (PCM)) and the rheological properties (viscosity and yield stress) of cement based grout (CBG) mixtures. The experiments were applied with the CBG mix including 1.00 water-binder (w/b) ratios and combined use of WMP (5-25%), FA (5-25%) and WMP+FA (10-30% + constant 25%). Test results illustrated that the rheological properties of the CBGs importantly have been improved by the addition of WMP, FA and WMP+FA to grout mix at w/b=1 ratio. Strongly shear thickening behaviour was got from the CBG mixtures the all WMP, FA and WMP+FA content. The increase in the percentage of WMP (5-25%) amount reduced the mini-slump flow diameter. Moreover, the increment in the percentage of FA (5-25%) amount increments the mini slum flow. According to the control sample, the increment in the percentage of WMP (10-25%) amount increased the mini-slump flow diameter for constant FA (25%) content. Also, the increase in WMP amount in the CBG mix, there is no effect on MCFT. Also, MCFT decreased with the increase of FA amount. Especially, FA increased the fluidity of CBG, when the WMP showed negative effect in increase the MCFT in WMP+FA content.

show abstract

“…The quality in quality properties of M-sand mortar is high when levels diverged from waterway sand solid mortar at all substitution. Since handiness of completely substitution of M sand solid mortar is decrease the homogeneity, anyway quality is more, usage of admixtures [3] can be made to achieve usefulness in standard with trademark sand bond mortar. The including of mineral admixture like fly fiery debris and silica smolder in cement improve the great execution of mechanical (compressive strength, split rigidity, flexural) and durability properties of cement [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica fume on Ordinary Portland Cement and Polymer Concrete Made out of M Sand

2019

IJITEE

View full text Add to dashboard Cite

In this investigation, conventional concrete was made with replacing the sand by 80 % of M-sand and the cement by fillet material silica fume in varying percentages say 5%, 10 % , and 15%, to study the compressive strength, split tensile strength and flexural strength. In order to the maximum strength was attained at 10% of silica fume. The result showed that by increasing the silica fume content, the strength of the M-sand concrete was decreased because higher fineness of silica fume content decreases the strength of the M-sand concrete. Secondly polymer concrete with unsaturated polyester resin with hardener MEKP, Cobalt as the accelerator and silica fume in varying percentages say 0%, 5% and 10% was made to study the compressive strength and split tensile strength of polymer concrete. In improved silica fume content the strength was high. Polymer concrete improved the mechanical properties. Polymer concrete system was mainly useful to fill the micro voids. In this research, the maximum strength was attained at 5% of silica fume filler added with polymer concrete. Thus the high strength of the concrete was obtained due to the pozzolanic reaction with the silica fume.

show abstract

Improvement in concrete behavior with fly ash, silica-fume and coconut fibres

Cited by 207 publications

References 29 publications

Effect of Coconut Fiber Length and Content on Properties of High Strength Concrete

Effect of Coconut Fiber Length and Content on Properties of High Strength Concrete

Effect of Waste Marble Powder and Fly Ash on the Rheological Characteristics of Cement Based Grout

Effect of Silica fume on Ordinary Portland Cement and Polymer Concrete Made out of M Sand

Contact Info

Product

Resources

About