A study of the workability and compressive strength characteristics of corn cob ash blended cement concrete

Adesanya, D.A.; Raheem, Akeem Ayinde

doi:10.1016/j.conbuildmat.2007.12.004

Cited by 149 publications

(105 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, at all replacement levels, the compressive strength generally increased with curing age and decreased with PSA content. This result is consistent with the behaviour of supplementary cementitious materials (SCMs) [36,37,38]. It was observed that at 7 days hydration period, the compressive strength of specimens immersed in potable water decreased with increase in PSA replacement levels of 0, 5, 10, 15, and 20 %.…”

Section: Slump Testsupporting

confidence: 78%

Behaviour of periwinkle shell ash blended cement concrete in sulphuric acid environment

2018

View full text Add to dashboard Cite

This paper presents the influence of sulphuric acid on compressive strength of concrete made with cement blended with periwinkle shell ash (PSA). The cement component was replaced with PSA at 0 %, 5 %, 10 %, 15 % and 20 %. Concrete mix ratio of 1:2:4 and a constant water cement ratio of 0.6 was used. A total of 180 cube specimens (150mm x 150mm x 150mm) were cast and tested for compressive strength at 7, 14, 21 and 28 days of immersion in potable tap water (as control) and (5 % and 10 %) sulphuric acid solutions. Test results showed that the compressive strength increased with age and decreased with PSA content for specimen cured in water (control); while for specimen cured in sulphuric acid solutions, the compressive strength decreased with age, PSA content as well as sulphuric acid content. The statistical analysis of variance showed that the sulphuric acid concentrations, PSA contents and curing age have effect on the concrete compressive strength. Regardless of the concentration of exposure conditions, it is concluded that PSA did not lighten the adverse effects of sulphuric acid on the compressive strength of cement blended with PSA.

show abstract

Section: Slump Testsupporting

confidence: 78%

Behaviour of periwinkle shell ash blended cement concrete in sulphuric acid environment

2018

View full text Add to dashboard Cite

show abstract

“…Besides, the reaction of blended cement mortar specimens with HCl acid water (mix proportions 1:1, 1:2, and 1:3 by weight) was also studied in-depth, and their results indicated that the incorporation of CCA could improve the resistance of concrete to chloride attack. In addition, Adesanya and Raheem (2009) reported that the CCA-blended cement concrete presented a long-term strength development.…”

Section: Chemical and Phase Analysis Of Ccamentioning

confidence: 99%

“…To the best of the authors' knowledge, there have been few detailed studies on the performance properties of CCA obtained from gasification process or other thermo-chemical conversions (Adesanya and Raheem 2009;Wang et al 2012;Shim et al 2015). From this fact it seems likely that understanding of the performance properties of the waste biomass ash is essential for transforming it into useful and profitable products.…”

Section: Introductionmentioning

confidence: 99%

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Yao

Liang

2016

BioResources

View full text Add to dashboard Cite

Harnessing energy from biomass is environmentally friendly because of the essentially zero net CO2 impact. As a common agricultural byproduct, corncobs are abundant in quantity. This study was carried out to examine the thermo-physical properties of corncobs and characterize the properties of corncob ash produced from gasification, in order to provide a basis for transforming it into value-added products. The results showed that the pyrolysis of corncobs followed a three-step, stepwise mechanism. Activation energies calculated by the Coats-Redfern method at heating rates of 5, 10, and 20 °C/min were 79.08, 76.73, and 75.78 kJ·mol -1 , respectively, implying that the corncobs could be decomposed easily at high heating rates. The emissions of CO, CO2, CH4, H2, H2O, and O2 during pyrolysis corresponded well with thermal curves. Corncob ash could be a good fertilizer because of its high contents of K, P, and Ca. The high SiO2 content makes the corncob ash suitable for ceramics and blended cement concrete. Sylvite (KCl) and quartz (SiO2) were the two major crystal phases in the corncob ash. Relatively large particles of unburnt carbon residues in the ash indicated that low-cost adsorbent could be developed from these carbon residues.

show abstract

“…Since corn cob is generally considered an agricultural waste, an interesting economic and sustainable benefit may be achieved through this proposed technological solution. Within the authors' knowledge the utilization of corn cob in concrete is quite novel, and the only known use is that of corn cob ash in blended cement concretes [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Corn cob lightweight concrete for non-structural applications

Pinto

Vieira

Pereira

et al. 2012

Construction and Building Materials

View full text Add to dashboard Cite

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tA lightweight concrete using granulated corn cob (without corn) as an aggregate is proposed in this research work. Taking into account that corn cob, after extracting the corn, is generally considered an agricultural waste, an interesting economic and sustainable benefit may result by using it as a building material. Therefore, it can be an alternative sustainable lightweight aggregate solution in comparison to the most currently applied ones such as expanded clay, particles of cork, particles of expanded polystyrene (EPS), among others. The density, the compressive strength and the thermal insulation properties of a corn cob concrete were experimentally quantified. An expanded clay concrete was also studied as reference. The main results obtained are presented and discussed showing that the proposed corn cob concrete may have the adequate material properties required for a lightweight concrete for non-structural application purposes.

show abstract

A study of the workability and compressive strength characteristics of corn cob ash blended cement concrete

Cited by 149 publications

References 7 publications

Behaviour of periwinkle shell ash blended cement concrete in sulphuric acid environment

Behaviour of periwinkle shell ash blended cement concrete in sulphuric acid environment

Research on the Thermo-Physical Properties of Corncob Residues as Gasification Feedstock and Assessment for Characterization of Corncob Ash from Gasification

Corn cob lightweight concrete for non-structural applications

Contact Info

Product

Resources

About