Development of corn cob ash blended cement

Adesanya, D.A.; Raheem, Akeem Ayinde

doi:10.1016/j.conbuildmat.2007.11.013

Cited by 209 publications

(125 citation statements)

References 15 publications

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“…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

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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.

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Section: Introductionmentioning

confidence: 99%

Corn cob lightweight concrete for non-structural applications

Pinto

Vieira

Pereira

et al. 2012

Construction and Building Materials

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“…The need to convert this waste product into a useful by-product is the focus of the study. (Adesanya and Raheem, 2009a;2009b;2010;Raheem and Adesanya, 2011;Raheem et al 2010). Literature is however scarce on the use of saw dust ash.…”

Section: Introductionmentioning

confidence: 99%

Saw Dust Ash as Partial Replacement for Cement in Concrete

Raheem¹,

Olasunkanmi²,

Folorunso³

2012

OTMCJ

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o r g a n i z a t i o n , t e c h n o l o g y a n d m a n a g e m e n t i n c o n s t r u c t i o n · a n i n t e r n a t i o n a l j o u r n a l · 4(2)2012 474Saw dust ash, Pozzolan, Workability, Compressive strengthKeywords this research considered the use of saw dust ash as a pozzolan in the production of concrete. the study investigated the physical properties and chemical composition of saw dust ash (SDA) as well as the workability, and compressive strength properties of the concrete produced by replacing 5%, 10%, 15%, 20% and 25% by weight of ordinary Portland cement with SDA. Slump and compacting factor tests were carried out on the fresh concrete and compressive strength test on hardened concrete. The concrete cubes were tested at the ages of 3, 7, 28, 56 and 90 days. The results showed that SDA is a good pozzolan with combined SiO2, Al2O3 and Fe2O3 of 73.07%. The slump and compacting factor decreased as the SDA content increased indicating that concrete becomes less workable as the SDA content increased. The compressive strength decreased with increasing SDA replacement. The compressive strength of concrete with SDA was lower at early stages but improves significantly up to 90 days.An optimum value of 23.26N/mm2 at 90 days was obtained for concrete with 5% SDA replacement. It was concluded that 5% SDA substitution is adequate to enjoy maximum benefit of strength gain. Saw Dust Ash as Partial Replacement for Cement in Concrete INTRODUCTIONThere is need for affordable building materials in providing adequate housing for the teaming populace of the world. The cost of conventional building materials continue to increase as the majority of the population continues to fall below the poverty line. Thus, there is the need to search for local materials as alternatives for the construction of functional but low-cost buildings in both the rural and urban areas. Some of the local materials that have been used are earthen plaster (Svoboda and Prochazka, 2012), lateritic interlocking blocks (Raheem et al., 2012) and Palm kernel shell (Raheem et al., 2008).Continuous generation of wastes arising from industrial by-products and agricultural residue, create acute environmental problems both in terms of their treatment and disposal. The con-DOI 10.5592/otmcj.2012.2.3 Research paper 475 struction industry has been identified as the one that absorbs the majority of such materials as filler in concrete (Antiohos et al., 2005). If these fillers have pozzolanic properties, they impart technical advantages to the resulting concrete and also enable larger quantities of cement replacement to be achieved (Hossain, 2003). Appropriate utilization of these materials brings ecological and economical benefits.Saw dust is a waste material from the timber industry. It is produced as timber is sawn into planks at saw mills located in virtually all major towns in the country. This process is a daily activity causing heaps of saw dust to be generated after each day. The need to convert this waste product into a useful by-product is the fo...

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“…The increase in strength is due to the pozzolanic reaction as stated by [23] and the presence of predominantly reactive silica in CCA. At 28 curing day, the varied percentage of 3% PLC and 10% CCA (3:10) with 4.13MPa satisfied the minimum compressive strength requirement of 4MPa stipulated by the [12] for blocks produced with Hydraulic Interlocking Block Making Machine.…”

Section: Compressive Strength Of Lib and Shbmentioning

confidence: 99%

“…Test data showed that water absorption moderately decreases as the CCA addition increases. The decrease supported [23]- [24] that laterite particles have been bonded together by stabilizing agents (PLC and CCA) which reduced the pores through which water could pass into the blocks. Maximum water absorption of the sample was 8.29% for control.…”

Section: Water Absorption Of Lib and Shbmentioning

confidence: 99%

Comparative Study of Corncob Ash-Based Lateritic Interlocking and Sandcrete Hollow Blocks

Oyebisi¹

2018

GEOMATE

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ABSTRACT:The high cost of conventional walling materials, increase in emission of CO2 due to cement production and improper disposal of corncob lead to persistent bottlenecks in low-cost and sustainable housing delivery, environmental pollution, and agricultural wastage respectively. This study investigates the use of corncob ash (CCA) as cement additive in producing lateritic interlocking blocks (LIB) and compares its physical characteristics and production cost with Sandcrete hollow block (SHB). Portland limestone cement (PLC) was replaced by CCA in varying percentages 5, 10 and 15%. The density, compressive strength and water absorption of the blocks were determined and compared with the Nigerian standard requirements and specifications. The experimental results showed optimal strength at 3% PLC and 10% CCA with a compressive strength of 4.13MPa, water absorption of 6.60% and density of 1869.47Kgm -3 at 28 days curing for LIB. For 450mm × 225mm × 225mm SHB, compressive strength, water absorption and density at 28 days curing were 3.86MPa, 4.69%, and 1849.95Kgm -3 respectively. All the blocks produced satisfied the recommendations of both the Nigerian Building and Road Research Institute and the Nigerian Industrial Standards. The cost per square meter of SHB and LIB was 4.62 USD and 2.35 USD respectively. The experimental results indicated that LIBs have better strength and are cheaper than SHBs. Recycling of CCA as a supplement material seems to be a feasible solution not only to the problem of adopting indigenous waste material in the production of LIB but also to the environmental problem.

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Development of corn cob ash blended cement

Cited by 209 publications

References 15 publications

Corn cob lightweight concrete for non-structural applications

Corn cob lightweight concrete for non-structural applications

Saw Dust Ash as Partial Replacement for Cement in Concrete

Comparative Study of Corncob Ash-Based Lateritic Interlocking and Sandcrete Hollow Blocks

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