Setting Times of Portland Cement Blended with Locust Bean Pod and Eggshell Ashes

Olu, Olubajo Olumide; Ade, Osha Odey; Jibril, Abubakar

doi:10.11648/j.ajche.20200805.11

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Similar trend was observed by Yashwanth and Nareshkumar [42], Sachin et al [16] and Geerthana et al [26] on the normal consistency as SCBA was increased and they attributed its increase to the SCBA fineness thus, requiring more water. This high unburnt carbon can increase the water requirement for normal consistence which agrees with research works of Kaya [40], Olubajo et al [43] and Georgescu and Saca [44] respectively. Another reason for the higher water requirement could be due to the high silica content thus, imparting on the workability of the cement blend.…”

Section: Effect Of Scba Content On the Water Demand/ Consistency Of Plc Blendssupporting

confidence: 90%

“…The SCBA cement blend up to 15 wt.% replacement retarded the initial and final setting time by 46 and 60 minutes in comparison with PLC control. Another reason for the retarded setting times could be due to the increase in the potassium ion (4.39 wt.%) present in SCBA resulting in formation of muscovite which is considered a retarder according to Olubajo et al [5,43] and Venkateswara et al [45].…”

Section: Effect Of Scba Content On the Setting Times Of Plc Blendsmentioning

confidence: 99%

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The Effect of Sugarcane Bagasse Ash on the Properties of Portland Limestone Cement

Olu¹,

Aminu²,

Sabo³

2020

AJCBM

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This paper tries to investigate sugarcane bagasse ash (SCBA) as a cement replacement material and its effect on the water consistency, setting times, soundness, specific gravity, water absorption and mortar compressive strength of SCBA-Portland limestone cement (PLC) blend at cement replacement from 0 -15 wt.% at interval of 2.5 wt.%. Calcination of sugarcane bagasse was conducted and the optimum condition was obtained ash at 650°C at 90 mins with a higher Si + Al + Fe content from nine compositional analysis of ashes obtained via X-ray fluorescence spectrometer and then employed as cement replacement material for this research work. The consistency and setting times of the blended cement samples were carried on paste using Vicat apparatus while the soundness, specific gravity and compressive strength using Le Chatelier apparatus, density bottle and strength testing machine respectively according to ASTM standards respectively. Results showed an increase in the water consistency and setting times of SCBA cement pastes as SCBA content was increased from 2.5 -15wt.% which was attributed to unburnt carbon present in the ash due to its high LOI. The elongated setting times could also due to clinker diminution by cement replacement with SCBA and high-water demand. The SCBA cement blends produced accelerated setting time results compared to PLC owing to lime present in SCBA which enhances early hydration. The specific gravity diminished while the volume expansion of the SCBA cement pastes experienced an increase as SCBA was increased due to lower density of SCBA compared to PLC and increased lime content due to increased SCBA content respectively. An increase in the mortar compressive strengths of SCBA cement blends was experienced as the curing days progressed from 3 to 60 days. PLC blended with SCBA produced an enhanced early strength due to the presence of lime which tends to accelerate the rate of formation of hydration assembly. Whereas, at a high cement replacement of 12.5 wt.% SCBA produced exceptional mortar compressive strength especially at 60 days despite clinker diminution indicating pozzolanic activity due to SCBA inclusion. The optimal cement replacement with SCBA was observed at 5 wt.% in comparison with control especially at 28 days and did not adversely affect its strength owing to pozzolanic activity.

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Section: Effect Of Scba Content On the Water Demand/ Consistency Of Plc Blendssupporting

confidence: 90%

Section: Effect Of Scba Content On the Setting Times Of Plc Blendsmentioning

confidence: 99%

The Effect of Sugarcane Bagasse Ash on the Properties of Portland Limestone Cement

Olu¹,

Aminu²,

Sabo³

2020

AJCBM

Self Cite

View full text Add to dashboard Cite

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Preparation and Characterization of Biocement Mortar Containing Silane-treated Nano-Si3N4 Prepared from Rice Husk Ash

Subburaj

Chokkalingam

Prabhu³

et al. 2022

Silicon

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Pozzolanic biosilica, biochar, and egg shell in setting time, WVTR, and compression strength of biocement mortar: a Taguchi GRA validation

Sahibulla¹,

Jaisingh

2021

Biomass Conv. Bioref.

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Setting Times of Portland Cement Blended with Locust Bean Pod and Eggshell Ashes

Cited by 4 publications

References 9 publications

The Effect of Sugarcane Bagasse Ash on the Properties of Portland Limestone Cement

The Effect of Sugarcane Bagasse Ash on the Properties of Portland Limestone Cement

Preparation and Characterization of Biocement Mortar Containing Silane-treated Nano-Si3N4 Prepared from Rice Husk Ash

Pozzolanic biosilica, biochar, and egg shell in setting time, WVTR, and compression strength of biocement mortar: a Taguchi GRA validation

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