Lightweight concrete masonry units based on processed granulate of corn cob as aggregate

Faustino, J.; Silva, E.; Pinto, José M.; Soares, Edgar; Cunha, Vítor M. C. F.; Soares, Sabrina França

doi:10.3989/mc.2015.04514

Cited by 13 publications

(4 citation statements)

References 11 publications

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“…In a comparative analysis with other studies results, the densities obtained in this study are below of those obtained by [ 30 ], which used similar shredded corn cob aggregates but covered with cement paste, as 15% replacement of the mineral ones. The material obtained with 80% corn cob aggregates recorded a density 3.5 times higher than the material developed by [ 25 ] with corn cobs broken into pieces.…”

Section: Resultscontrasting

confidence: 69%

“…Among vegetal aggregates suitable for use in concrete are corn cobs and sunflower stalks, given their wide global distribution, annual regeneration nature and the encouraging results of studies carried out so far on these plants [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. Corn cobs and sunflower stalks are, at the same time, agricultural waste and low-emission materials, locally available [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…In a study conducted by Pinto et al [ 25 ] on a concrete with broken corn cobs, in a ratio of 6 parts of corn cobs: 1 part of Portland cement: 1 part of water, the researchers obtained a material with a density of 382.2 kg/m 3 and compressive strength of 120 kN/m 2 . Lightweight concrete masonry blocks with aggregates from shredded corn cobs and covered with cement paste, that were developed by Faustino et al [ 30 ], registered a density of 1680 kg/m 3 , and maintained a high durability during the repeated freeze-thaw cycles.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sunflower Stalks versus Corn Cobs as Raw Materials for Sustainable Concrete

Grădinaru

Șerbănoiu

2021

Materials

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Concrete, the most common material in the building industry, involves the use of mineral aggregates that represent an exhaustible resource, despite their large availability. For a series of applications, these mineral aggregates can be replaced by vegetal ones, which represent an easy renewable natural resource. In this study, two types of vegetal raw materials, namely sunflower stalks and corn cobs, were used in developing 10 compositions of ecological microconcrete, with different percentages involved: 20%, 35%, 50%, 65% and 80%; they were analyzed from the perspectives of density, compressive strength, splitting tensile strength, resistance to repeated freeze-thaw cycles, modulus of elasticity and thermal conductivity. The results revealed that the microconcretes with sunflower stalks registered slightly higher densities and better results regarding the compressive strength, splitting tensile strength, modulus of elasticity, and freeze-thaw resistance than those with corn cobs. Lightweight concrete is obtained when more than 50% replacement rates of the mineral aggregates are used.

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Section: Resultscontrasting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sunflower Stalks versus Corn Cobs as Raw Materials for Sustainable Concrete

Grădinaru

Șerbănoiu

2021

Materials

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“…Examples of hybridization of the construction industry and other sectors can also be found in the literature. The use of textile waste in mortar and cement [10,11] and the reuse of agricultural waste in the production of bricks [12,13] have both been discussed.…”

Section: Transition To Circular Economy: the Need For New Skills And ...mentioning

confidence: 99%

Supply Chains in Transition for the Development of Building Components: Three Educational Experiences in a Circular Economy Perspective

Tedesco,

Montacchini,

Lacirignola

2023

Sustainability

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In line with the UN’s 2030 Agenda for Sustainable Development, the circular economy may become an opportunity for change even in the construction industry, which is traditionally distinguished for its high resource consumption and considerable waste generation. Schools of architecture play a crucial role because the transition towards a circular economy implies the necessary development of new professional figures with wide-ranging skills that may pave the way for new directions in R&D. This article describes three different learning experiences developed at Politecnico di Torino, which have in common the prospect of supply chains in transition. In particular, it discusses the following: the transition of waste from the agrifood chain to the design sector through the experimentation of panels for furniture; the integration of local supply chains for cork, sheep wool, and soil through the design of insulation blocks and panels; and the ‘as-is’ transition of an element originally used as packaging from the agrifood supply chain to the building envelope component sector. These experiences show the possibility of hybridization between sectors that are only apparently distant from one other. Above all, they can be considered ‘exercises’ to train future architects in the experimentation and transformation of matter, systemic design, and divergent and lateral thinking for the development of new building materials and components.

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