Utilization of sieved and ground coal bottom ash powders as a coarse binder in high-strength mortar to improve workability

Kim, Hyeong-Ki

doi:10.1016/j.conbuildmat.2015.05.017

Cited by 115 publications

(39 citation statements)

References 33 publications

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“…F type ash upholds excellent self-hardening capacity [28,36]. Cement product formed by reaction of hydrate lime or moisture with silica and alumina, which are present in grounded bottom ash having fine particulates [18,22]. Grounded bottom ash samples contain lower percentage of loi as compared to original bottom ash and therefore, it corroborates more pozzolanic nature.…”

Section: Potential Of Original and Grounded Bottom Ash Utilizationmentioning

confidence: 72%

“…Grounded bottom ash particle size distribution data shows that about 60% of the particles are finer than 150 µm. This can be utilized as partial replacement of the cement in concrete due to improvement in the pozzolanic nature [22]. Bottom ash has the appearance and particle size distribution similar to that of natural fine aggregate i.e.…”

Section: Physical and Chemical Characterization Of Original And Grounmentioning

confidence: 99%

“…Grounded bottom ash samples contain lower percentage of loi as compared to original bottom ash and therefore, it corroborates more pozzolanic nature. Experimental investigations [13,22,26,28] reported that grounded bottom ash can be utilized as raw material for production of blended cement products. Due to higher strength and hydraulic conductivity with lower density than the natural soil, it is used for making light weight synthetic concrete block and artificial aggregates [14,28].…”

Section: Potential Of Original and Grounded Bottom Ash Utilizationmentioning

confidence: 99%

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Comprehensive Characterization of Grounded Bottom Ash from Indian Thermal Power Plant

Singh¹,

Kumar²,

Kumar³

2017

JRST

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In present work, an attempt has been made to improve the quality of bottom ash for utilization as a pozzolanic material. All samples were crushed and passed through 250 µm sieve to prepare grounded bottom ash. The physio-chemical, mineral and leaching characteristics of original and grounded bottom ash were studied. Results show that specific gravity and bulk density of all sample increases whereas porosity, water holding capacity and loss of ignition decreases after the grounding the bottom ash. Pozzolanic properties of bottom ash also improved after grounding the ash samples which helps to commercialize its utilization and reduce environmental impact.

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Section: Potential Of Original and Grounded Bottom Ash Utilizationmentioning

confidence: 72%

Section: Physical and Chemical Characterization Of Original And Grounmentioning

confidence: 99%

Section: Potential Of Original and Grounded Bottom Ash Utilizationmentioning

confidence: 99%

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Comprehensive Characterization of Grounded Bottom Ash from Indian Thermal Power Plant

Singh¹,

Kumar²,

Kumar³

2017

JRST

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“…이 문제를 극복하기 위한 한가지 방법 중 하나는 바 텀애시를 파쇄(Crushing) 하는 것이다 6) . 본 연구에서 '파쇄'란 바텀애시 원재료를 공업용 분쇄기를 이용해 최 대 입경 1 mm 수준의 상대적으로 굵은 분말로 가공하 는 것으로써, 이는 플라이 애시의 입도 수준인 100 mm 이하 수준으로 가공하는 '분쇄(Grinding, milling)'와 다 른 것으로 정의한다 6,7) . 파쇄는 분쇄에 비해 장비 및 가 공공정이 단순하고 시간과 에너지가 월등히 적게 소요 된다는 장점을 갖는다.…”

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Effects of Crushed Coal Bottom Ash on the Properties of Mortar with Various Water-to-binder Ratios

Tafesse¹,

Kim²

2016

Journal of the Korean Institute of Resources Recycling

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Effects of crushed coal bottom ash (CBA) with maximum size of 1 mm on the properties of mortar with various water-tobinder ratios (w/b) were evaluated. The present work is a fundamental study to establish a method of mix proportion design for mortar and concrete with CBA. The workability, air contents, and compressive strength of mortar were measured. Efficiency of CBA on the compressive strength at 28 days, which was adopted for mix proportion design, was evaluated based on concepts of 'equivalent strength' in CEN/TR 16637. It was found that the CBA could be contributed as a binder in mortar in some cases, while in other cases act as at aggregates. The efficiency of CBA was influenced by types of CBA and their replacement ratio, and w/b of mortar.

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“…Test results shown in [11] indicate that, when compared to conventional concrete, bottom ash concrete exhibited better dimensional stability and slightly better resistance to sulphuric acid attack, and better resistance to chloride ion penetration. Kim concluded that the workability of the mixtures with bottom ash powders was significantly higher when compared to mixtures including only cement and fly ash, although compressive strength values at 3 and 28 days were similar [12]. Concrete with 80 % of coal bottom ash can be used in the production of highway noise barriers [13].…”

Section: Introductionmentioning

confidence: 99%

Possibility of using bottom ash in precast concrete products

Lakušić¹

2018

JCE

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Possibility of using bottom ash in precast concrete products Chemical, physical and mechanical properties of bottom ash from two thermal power plants were analysed in order to evaluate the quality of bottom ash and to determine the possibility of its use in composite materials. It was found that the bottom ash samples from both power plants show good properties enabling their practical use, and that they also meet most of the criteria specified for fly ash. Samples in which 4, 8, 12 and 16% of fine aggregate was replaced with bottom ash were tested. The results meet criteria of applicable regulations for concrete, which justifies the use of bottom ash in construction industry. Mogućnosti upotrebe pepela s dna peći u betonskim predgotovljenim proizvodimaKako bi se ocijenila kvaliteta pepela s dna peći i utvrdila mogućnost njegove upotrebe u kompozitnim materijalima, provedeno je ispitivanje njegovih kemijskih, fizikalnih i mehaničkih svojstava iz dvije termoelektrane.Utvrđeno je da uzorci pepela s dna peći iz obje elektrane pokazuju dobra svojstva koja upućuju na mogućnost njihove praktične primjene te da ispunjavaju većinu kriterija propisanih za leteći pepeo. Ispitani su uzorci s 4 %, 8 %, 12 % i 16 % zamjene sitnog agregata pepelom. Rezultati su zadovoljili kriterije propisa za beton, što opravdava upotrebom pepela s dna peći u građevinskoj industriji.

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Utilization of sieved and ground coal bottom ash powders as a coarse binder in high-strength mortar to improve workability

Cited by 115 publications

References 33 publications

Comprehensive Characterization of Grounded Bottom Ash from Indian Thermal Power Plant

Comprehensive Characterization of Grounded Bottom Ash from Indian Thermal Power Plant

Effects of Crushed Coal Bottom Ash on the Properties of Mortar with Various Water-to-binder Ratios

Possibility of using bottom ash in precast concrete products

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