Experimental Investigation of the Tensile strength and Compressive strength of Fly Ash Core Sandwiched Composite Material

Purpose This paper aims to perform an experimental investigation on the impact strength, compressive strength, tensile strength and flexural strength of fly ash-based green composites and to compare with these polyvinyl chloride (PVC), high density polyethylene (HDPE) and low density polyethylene (LDPE). Design/methodology/approach Fly ash-based polymer matrix composites (FA-PMCs) were fabricated using hand layup method. Composites containing 100 g by weight fly ash particles, 100 g by weight brick dust particles and 50 g by weight chopped glass fiber particles were processed. Impact strength, compressive strength, tensile strength and flexural strength of composites have been measured and compared with PVC, HDPE and LDPE. Impact strength of the FA-PMC is higher than that of PVC, HDPE and LDPE. Structural analysis of pipes, gears and axial flow blade was verified using ANSYS. Barlou’s condition for pipes, Lewis–Buckingham approach for gears and case-based analysis for axial flow blades were carried out and verified. Findings Pipes, gears and axial flow blades made form fly ash-based composites were found to exhibit improved thermal resistance (i.e. better temperature independence for mechanical operations), higher impact strength and longer life compared to those made from PVC, HDPE and LDPE. Moreover, the eco-friendly nature of the raw materials used for fabricating the composite brings into its quiver a new dimension of appeal. Originality/value Experimental investigation on the impact strength, compressive strength, tensile strength and flexural strength of fly ash-based green composites has not been attempted yet.

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Influence of Partial Replacement of Micro-Silica by Fly-Ash on Strength Properties of Reactive Powder Concrete

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.c5453.029320 ◽

2020 ◽

Vol 9 (3) ◽

pp. 2932-2937

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Mechanical Performance ◽

Cementitious Materials ◽

Partial Replacement ◽

Reactive Powder Concrete ◽

Experimental Investigations ◽

Reactive Powder ◽

Micro Silica

Reactive powder concrete (RPC) is the ultra-high strength concrete made by cementitious materials like silica fumes, cement etc. The coarse aggregates are completely replaced by quartz sand. Steel fibers which are optional are added to enhance the ductility. Market survey has shown that micro-silica is not so easily available and relatively costly. Therefore an attempt is made to experimentally investigate the reduction of micro-silica content by replacing it with fly-ash and mechanical properties of modified RPC are investigated. Experimental investigations show that compressive strength decreases gradually with addition of the fly ash. With 10 per cent replacement of micro silica, the flexural and tensile strength showed 40 and 46 per cent increase in the respective strength, though the decrease in the compressive strength was observed to be about 20 per cent. For further percentage of replacement, there was substantial drop in compressive, flexural as well as tensile strength. The experimental results thereby indicates that utilisation of fly-ash as a partial replacement to micro silica up to 10 per cent in RPC is feasible and shows quite acceptable mechanical performance with the advantage of utilisation of fly-ash in replacement of micro-silica.

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Experimental study on the properties of highperformance concrete made with class C fly ash

MATEC Web of Conferences ◽

10.1051/matecconf/201927601014 ◽

2019 ◽

Vol 276 ◽

pp. 01014

Author(s):

I Made Alit Karyawan Salain ◽

I Nyoman Sutarja ◽

Teguh Arifmawan Sudhiarta

Keyword(s):

Experimental Study ◽

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Permeability Coefficient ◽

Splitting Tensile Strength ◽

Type I ◽

Fine Aggregate ◽

Hydration Time ◽

Class C

This experimental study presents the properties of highperformance concrete (HPC) made by partially replacing type I Portland cement (OPC) with class C fly ash (CFA). The purpose of this study is to examine, with hydration time, the development of the compressive strength, the splitting tensile strength and the permeability of HPC utilizing different quantity of CFA. Four HPC mixtures, C1, C2, C3, and C4, were made by utilizing respectively 10%, 20%, 30% and 40% of CFA as replacement of OPC, by weight. One control mixture, C0, was made with 0% CFA. The mix proportion of HPC was 1.00 binder: 1.67 fine aggregate: 2.15 coarse aggregate with water to binder ratio 0.32. In each mixture, it was added 5% silica fume and 0.6% superplasticizer of the weight of the binder. Tests of HPC properties were realized at the age of 1, 3, 7, 28, and 90 days. The results indicate that CFA used to partially replace OPC in HPC shows adequate cementitious and pozzolanic properties. The compressive strength and the splitting tensile strength of HPC increase while the permeability coefficient decreases with increasing hydration time. It is found that the optimum replacement of OPC with CFA is 10%, however the replacement up to 20% is still acceptable to produce HPC having practically similar harden properties with control mixture. At this optimum replacement and after 90 days of hydration, the compressive strength, the splitting tensile strength and the permeability coefficient can reach 68.9 MPa, 8.3 MPa and 4.6 E-11 cm/sec respectively. These results are 109%, 101%, and 48% respectively of those of control mixture.

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Effects of the Amount of Fly Ash Modified by Stearic Acid Compound on Mechanical Properties, Flame Retardant Ability, and Structure of the Composites

International Journal of Chemical Engineering ◽

10.1155/2020/2079189 ◽

2020 ◽

Vol 2020 ◽

pp. 1-6 ◽

Cited By ~ 2

Author(s):

Tuan Anh Nguyen

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Flexural Strength ◽

Stearic Acid ◽

Flame Retardant ◽

Burning Rate ◽

Thermal Power ◽

Waste Product ◽

Fire Retardant

Fly ash, a waste product from thermal power plants, is one of the good alternatives for use as a filler in polymers, especially in flame retardants. Fly ash is an environmentally friendly fire retardant additive for composites, used in place of conventional flame retardant additives such as halogenated organic compounds, thus promoting environmental safety. In this study, fly ash was modified with stearic acid to improve adhesion at the polymers interface and increase compatibility. Fly ash was studied at various volumes (5, 10, and 20 wt.% fly ash) used in this study to synthesize fly ash-epoxy composites. The results show that the tensile strength, flexural strength, compressive strength, and impact strength of these synthetic materials increase when fly ash is modified to the surface, compressive strength: 197.87 MPa, flexural strength: 75.20 MPa, impact resistance: 5.77 KJ/m2, and tensile strength: 47.89 MPa. Especially, the fire retardant properties are improved at a high level, with a modified 20% fly ash content: the burning rate of 16.78 mm/min, minimum oxygen index of 23.2%, and meet the fire protection standard according to UL 94HB with a burning rate of 8.09 mm/min. Scanning electron microscopy (SEM) and infrared spectroscopy were used to analyze the morphological structure of fly ash after being modified and chemically bonded with epoxy resin background.

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Development of High Performance Concrete Containing Admixture in Nuclear Power Plants

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.357-360.1062 ◽

2013 ◽

Vol 357-360 ◽

pp. 1062-1065 ◽

Cited By ~ 4

Author(s):

Jeong Eun Kim ◽

Wan Shin Park ◽

Song Hui Yun ◽

Do Gyeum Kim ◽

Jea Myoung Noh

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Blast Furnace ◽

Fly Ash ◽

Silica Fume ◽

Modulus Of Elasticity ◽

Blast Furnace Slag ◽

High Performance ◽

Splitting Tensile Strength ◽

Furnace Slag

This paper presents the results of an experimental study on the compressive strength, splitting tensile strength and modulus of elasticity characteristics of high performance concrete. These tests were carried out to evaluate the mechanical properties of HPC for up to 7 and 28 days. Mixtures were prepared with water to binder ratio of 0.40. Two mixtures were containing fly ash at 25%, silica fume at 5% cement replacement, respectively. Another mixture was contains blast furnace slag and fly ash at 25%. Three standard 100¥a200 cylinder specimens were prepared. HPC showed improvement in the compressive strength and splitting tensile strength when ordinary Portland cement was replaced with silica fume. Compare with specimens FA25 and BS25FA25, specimen SF5 showed much more modulus of elasticity. It shows that the use of the blast furnace slag of 25% and fly ash of 25% cement replacement has caused a small increase in compressive strength and splitting tensile strength and modulus of elasticity compared to the only use of fly ash of 25% at 28days. The results indicated that the use of blast furnace slag or silica fume provided the good performance compare to fly ash when the mechanical properties of the high performance concretes were taken into account.

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Effect of Fly Ash and Activator on Performance of Steam-Cured Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.113-116.1013 ◽

2010 ◽

Vol 113-116 ◽

pp. 1013-1016 ◽

Cited By ~ 1

Author(s):

Zhi Min He ◽

You Jun Xie ◽

Guang Cheng Long ◽

Jun Zhe Liu

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Precast Concrete ◽

Early Age ◽

Flexure Strength ◽

Concrete Elements ◽

Chemical Activator

In precast concrete elements manufacturing, steam-cured concrete incorporating 30% fly ash encountered the problem of a too low demoulding compressive strength. To resolve it, this paper developed a new steam-cured concrete (AFSC) incorporating fly ash and a chemical activator. Experiments were conducted to investigate the mechanical properties of AFSC. The corresponding mechanism was also discussed by testing the microstructure of concrete. Results indicate that the demoulding compressive strength of AFSC can meet production requirements, and compressive and flexure strength of AFSC at later ages increase well. Compared with that of ordinary steam-cured concrete, AFSC has a higher tensile strength, and the capability of AFSC to resist cracks is enhanced remarkably. At an early age, addition of the chemical activator can distinctly accelerate the extent of hydration of the fly ash cement systems, and thus the microstructure of concrete becomes denser.

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Experimental Study on Workability and Strength of Green High Performance Concrete with High Volume Fly Ash

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.859.52 ◽

2013 ◽

Vol 859 ◽

pp. 52-55 ◽

Cited By ~ 2

Author(s):

Yong Qiang Ma

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

High Performance ◽

High Performance Concrete ◽

High Volume ◽

Ash Content ◽

Splitting Tensile Strength ◽

Binder Ratio ◽

Water Binder Ratio

A great deal of experiments have been carried out in this study to reveal the effect of the water-binder ratio and fly ash content on the workability and strengths of GHPC (green high performance concrete). The workability of GHPC was evaluated by slump and slump flow. The strengths include compressive strength and splitting tensile strength. The results indicate that the increase of water-binder ratio can improve the workability of GHPC, however the strengths of GHPC were decreased with the increase of water-binder ratio. When the fly ash content is lower than 40%, the increase in fly ash content has positive effect on workability of GHPC, while the workability begins to decrease after the fly ash content is more than 40%. The addition of fly ash in GHPC has adverse effect on the strengths, and there is a tendency of decrease in the compressive strength and splitting tensile strength of GHPC with the increase of fly ash content.

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The effect of high temperature on compressive strength and splitting tensile strength of structural lightweight concrete containing fly ash

Construction and Building Materials ◽

10.1016/j.conbuildmat.2007.07.033 ◽

2008 ◽

Vol 22 (11) ◽

pp. 2269-2275 ◽

Cited By ~ 114

Author(s):

Harun Tanyildizi ◽

Ahmet Coskun

Keyword(s):

Tensile Strength ◽

Compressive Strength ◽

High Temperature ◽

Fly Ash ◽

Lightweight Concrete ◽

Splitting Tensile Strength

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Research on the Basic Mechanical Properties of Fly Ash Fiber Reinforced Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.261-263.8 ◽

2011 ◽

Vol 261-263 ◽

pp. 8-12

Author(s):

Shu Shan Li ◽

Ming Xiao Jia ◽

Dan Ying Gao

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Compressive Modulus ◽

Fiber Reinforced Concrete ◽

Cement Ratio ◽

Influence Mechanism ◽

Fiber Concrete ◽

Early Strength

The basic mechanical properties of fly ash fiber concrete were tested. The influences to the compressive strength, splitting tensile strength and compressive modulus of elasticity of fiber concrete by water-cement ratio, dosage of fly ash and other factors were analyzed. The influence mechanism of fly ash to concrete is discussed. The results indicate that with the increase of the dosage of fly ash, the early strength of double-doped concrete is reduced, while the later strength of concrete was obviously increased.

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Polyester Fibers in the Concrete an Experimental Investigation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.261-263.125 ◽

2011 ◽

Vol 261-263 ◽

pp. 125-129 ◽

Cited By ~ 1

Author(s):

Venu Malagavelli ◽

Neelakanteswara Rao Paturu

Keyword(s):

Experimental Investigation ◽

Tensile Strength ◽

Compressive Strength ◽

Reinforced Concrete ◽

Crack Resistance ◽

Industrial Waste ◽

Fiber Reinforced Concrete ◽

Split Tensile Strength ◽

Biodegradable Waste ◽

Polyester Fibers

Construction field has experienced a growing interest in Fiber Reinforced Concrete (FRC) due to its various advantages. The disposal of industrial waste especially non biodegradable waste is creating a lot of problems in the environment. In the present investigation, an attempt has been made by using non biodegradable waste (polyester fibers) in the concrete to improve the crack resistance and strength. Concrete having compressive strength of 25MPa is used for this study. Samples were prepared by using various fiber contents starting from 0 to 6% of with an increment of 0.5% for finding Compressive strength, split tensile strength and flexural strengths. It is observed that, compressive strength, split tensile strength and flexural strengths of concretes is increasing as the fiber content is increased up to some extent.

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