Effect of concrete mixing parameters on propagation of ultrasonic waves

Abo-Qudais, Saad

doi:10.1016/j.conbuildmat.2004.07.022

Cited by 95 publications

(50 citation statements)

References 1 publication

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“…the specific gravity, percentage of water absorption and fineness modulus according to different thermal power plant stations in India. From the results, it was found that the specific gravity of bottom ash is between 1.39-2.66 where it differs for each power plant, which is lower than the specific gravity of coarse aggregates (2.51) and fine aggregates (2.62) [28]. According to Muhardi et al [8], the low specific gravity of bottom ash is due to lower iron oxide content.…”

Section: Physical Propertiesmentioning

confidence: 97%

A Comprehensive Review on the Properties of Coal Bottom Ash in Concrete as Sound Absorption Material

et al. 2017

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Abstract. The government is currently implementing policies to increase the usage of coal as fuel for electricity generation. At the same time, the dependency on gas will be reduced. In addition, coal power plants in Malaysia produce large amounts of industrial waste such as bottom ash which is collected in impoundment ponds (ash pond). However, millions of tons of coal ash (bottom ash) waste are collected in ponds near power plant stations. Since bottom ash has been classified as hazardous material that threatens the health and safety of human life, an innovative and sustainable solution has been introduced to reuse or recycle industrial waste such as coal bottom ash in concrete mixtures to create a greener and more sustainable world. Bottom ash has the potential to be used as concrete material to replace fine aggregates, coarse aggregates or both. Hence, this paper provides an overview of previous research which used bottom ash as fine aggregate replacement in conventional concrete. The workability, compressive strength, flexural strength, and sound absorption of bottom ash in concrete are reviewed.

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Section: Physical Propertiesmentioning

confidence: 97%

A Comprehensive Review on the Properties of Coal Bottom Ash in Concrete as Sound Absorption Material

et al. 2017

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“…The PUNDIT device was used to read the time required for ultrasonic waves to transfer across the specimen. This procedure was similar to Qudais [19].…”

Section: Ultrasonic Equipment and Measuring Techniquementioning

confidence: 99%

Engineering Properties of Normal Concrete Grade 40 Containing Rice Husk Ash at Different Grinding Time

Bakar¹,

Jaya²,

Johari³

et al. 2011

Advances in Materials Sciences

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The effect of rice husk ash with different grinding time on the engineering properties of concrete was studied. Eight rice husk ashes with different grinding were used in this investigation. Rice husk ash was used to partially replace Portland cement Type I at 15% by weight of cementitious material. The 100-mm concrete cube specimens were cast and cured in water for 7 and 28 days. The compressive strength of concrete was designed to achieve of grade 40 N/mm 2 at 28 days. A superplasticizer was added to all mixes to provide workability in the range of 110 -120 mm. However, the water to cement ratio (w/c) of the concrete was maintained at 0.49. Based on the results, the morphology of the rice husk ashes were changed by grinding. These appear to be an optimum grinding time of approximate 90 minutes which the compressive strength increased significantly. Generally, incorporation of RHA at varies grinding time can be decrease or increased the engineering properties of concrete extremely.

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“…This is local material, grey-brown colour, with a grain size D 50 = 6 mm and a degree of non-uniformity U = d 60 /d 10 = 20. The maximum dry density and optimum water content defined by modified Proctor test according to the EN 13286-2: Unbound and hydraulically bound mixturesPart 2: Test methods for laboratory reference density and water content -Proctor compaction for used gravel were 2,06 g/cm 3 and 4,71 % respectively. Currently, there are two steel slag landfills in the Republic of Croatia and it is a combination of blastfurnace and electric arc furnace steel slag.…”

Section: Experimental Program 21 Materials Characterizationmentioning

confidence: 99%

“…Abo-Qudais [3] evaluates the effect of concrete aggregate gradation, water-cement ratio, and curing time on measured ultrasonic wave velocity. The results indicated that water-cement ratio and aggregate gradation have a significant effect on UPV.…”

Section: Introductionmentioning

confidence: 99%

Characterization of cement stabilized pavement layers with ultrasound testing

2016

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Original scientific papers Performance of ultrasonic pulse velocity (UPV) in hydraulically bound mixtures is examined as a non-destructive testing, in order to estimate its potential for pavement material characterization. Test results show that an increase in cement content results in an increase in UPV values. Increase in steel slag aggregate content results in a decrease in UPV values. Analyses of relationship between UPV values and strengths have shown strong polynomial relationship. For UPV values ranging 2 ÷ 3,2 km/s cement stabilized material can be classified as appropriate for usage in road construction. Test results have shown good potential for UPV measure as non-destructive method in cement stabilized material characterization. Keywords: cement stabilized material; compressive strength; non-destructive testing; pavement; steel slag; ultrasound pulse velocity (UPV) Karakterizacija cementom stabiliziranih nosivih slojeva kolničkih konstrukcija metodom ultrazvukaIzvorni znanstveni članak U radu je ispitana mogućnost primjena metode mjerenja brzine ultrazvučnog impulsa kao nerazorne metode pri karakterizaciji hidraulički vezanih materijala kolničkih konstrukcija. Rezultati ispitivanja su pokazali da povećanje količine cementa rezultira povećanjem vrijednosti brzine ultrazvuka. Povećanje udjela čeličanske zgure u agregatu rezultira smanjenjem vrijednosti brzine ultrazvuka. Analiza odnosa brzine ultrazvuka i čvrstoće materijala pokazala je jaku polinomnu vezu. Za vrijednosti brzine ultrazvuka u rasponu od 2 ÷

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Effect of concrete mixing parameters on propagation of ultrasonic waves

Cited by 95 publications

References 1 publication

A Comprehensive Review on the Properties of Coal Bottom Ash in Concrete as Sound Absorption Material

A Comprehensive Review on the Properties of Coal Bottom Ash in Concrete as Sound Absorption Material

Engineering Properties of Normal Concrete Grade 40 Containing Rice Husk Ash at Different Grinding Time

Characterization of cement stabilized pavement layers with ultrasound testing

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