Properties of high calcium wood ash and densified silica fume blended cement

Cheah, Chee Ban

doi:10.5897/ijps11.1485

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…DSF's main field of application was as a pozzolanic material that yielded the high performance of concrete. The physical and chemical properties of DSF and OPC were mentioned earlier by authors from previous studies [18].…”

Section: Introductionmentioning

confidence: 77%

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Influence of densified silica fume on engineering properties of concrete containing coal bottom ash aggregate.

Ban,

Ping,

Lapongan

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Coal bottom ash (CBA) is a significant waste produced by the coal manufacturing power plant, harming the environment. CBA has been used in many studies to replace sand in cementitious materials. However, few studies have investigated the use of CBA in concrete as a sand replacement with densified silica fume (DSF) as a cement replacement. DSF is a potential supplementary cementitious material (SCM) to combat the engineering properties of concrete that are typically decreased when CBA is used as a replacement for natural aggregate. Therefore, the present study aimed to evaluate the influence of DSF on the engineering properties of concrete containing different content of CBA as a partial replacement for natural sand. The mix design of the ordinary Portland cement (OPC) and binary blended concrete comprised 90% OPC and 10% DSF by total binder’s weight. The CBA as the fine aggregate replacement was used at 25%, 50%, 75%, and 100% by total aggregate volume. The mechanical, porosity, absorption performance of DSF and CBA (DSF+CBA) concrete containing CBA as partial aggregate replacement material were investigated. DSF+CBA with 50% CBA replacement showed improved mechanical strength performance than control by 15% at 28d and 5.6% at 56d of curing. However, the total porosity performance for DSF+CBA concrete decrease as CBA content increases. In conclusion, the DSF as SCM in binary blended concrete with CBA content up to 50% achieved a better performance in terms of mechanical properties even though the porosity was marginally increased.

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Section: Introductionmentioning

confidence: 77%

“…It was processed to enhance the bulk density by pneumatic densification. The previous author determined the physical and chemical properties of DSF studied and used in this study [18]. DSF's main field of application was as a pozzolanic material that yielded the high performance of concrete.…”

Section: Introductionmentioning

confidence: 99%

Influence of densified silica fume on engineering properties of concrete containing coal bottom ash aggregate.

Ban,

Ping,

Lapongan

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…A new type of blended cement is produced when wood waste ash is added to the ordinary Portland cement (OPC). Cheah and Ramli [8] studied the compressive development of mortar mixes containing wood waste ash as a cement replacement. The optimum level of cement replacement with HCWA for the best compressive strength performance at all curing ages up to 28 days was 8% by total binder weight.…”

Section: Usage Of Wastes In Mortar 1 Binding Materialsmentioning

confidence: 99%

Use of Wastes in Developing Mortar – A Review

Naganathan¹,

Silvadanan

Chung

et al. 2014

AMR

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This paper is a literature review about the use of wastes in masonry mortar. Wastes such as wood waste ash, municipal solid waste, ground waste seashells, glass waste, fly ash, corn cob ash and palm oil fuel ash are used to replace cement as the binding material. Wastes of Cathode Ray Tube (CRTs) glass, plastic waste, construction demolition wastes, foundry sand and quarry dust are used as a replacement for fine aggregates. Additives such as recycled copper tailings and animal proteins also improve the properties of masonry mortar. It is learnt that certain percentages of wastes can be used as substitutes for binding materials and fine aggregates and therefore the ideal amount of waste can be determined.

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“…Marthong (2012) analysed the hydration characteristics of saw dust ash admixture cement and concluded that 10% addition of wood ash to cement is optimum. High calcium wood ash and densified silica fume blended cement paste was characterized by CheahChee and Mahudin (2011). Chemical analysis of wood ash showed that it has pozzolanic properties (Etiegni and Campbell, 1991).…”

Section: Introductionmentioning

confidence: 99%

Chemical and Physical Characteristics of Blended Cements Produced from Softwood Ash

Orogbade

Raheem

2018

LAUJOCES

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In an attempt to convert agricultural residue to alternative binding material for use in construction industry, this research considered the use of wood ash from Anacardium- occidentale (kaju) wood which is softwood as a pozzolan in cement production. In this study, the chemical composition (silica (SiO.), aluminum oxide (AI,O,), ferric oxide (Fe,O,), calcium oxide (CaQ), magnesium oxide (MgO), sulphur trioxide (SO,), sodium oxide (Na,O) and potassium Oxide (K,O)) of the ashes and the clinker was investigated. The production of blended cements were carried out in the factory by replacing 5- 50% by weight of Ordinary Portland Cement Clinker with the ashes during the manufacturing process. The cement without wood ash serves as the control. The physical characteristic (fineness, initial and final setting times, heat of hydration and residue on 45um sieve), and the chemical composition of the blended cements were also investigated. The results showed that Anacardiumoccidentale ash (AOA) was a suitable material for use as pozzolan since it satisfied the requirement for such a material by having a combined SiO, Fe,O,and Al,O,of more than 70% according to ASTM C 618. The AOA blended cements satisfied standard requirements for up to 20% replacement level. It was concluded that the wood ash was suitable for use in the production of blended cements.

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Properties of high calcium wood ash and densified silica fume blended cement

Cited by 6 publications

References 26 publications

Influence of densified silica fume on engineering properties of concrete containing coal bottom ash aggregate.

Influence of densified silica fume on engineering properties of concrete containing coal bottom ash aggregate.

Use of Wastes in Developing Mortar – A Review

Chemical and Physical Characteristics of Blended Cements Produced from Softwood Ash

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