Mechanical and microstructure properties of cassava peel ash–based kenaf bio-fibrous concrete composites

Ogunbode, Ezekiel Babatunde; Nyakuma, Bemgba Bevan; Jimoh, Richard Ajayi; Lawal, Temitope A.; Nmadu, Helen G.

doi:10.1007/s13399-021-01588-6

Cited by 6 publications

(5 citation statements)

References 34 publications

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“…The study likely investigates the potential for incorporating these sustainable materials into concrete mixtures. Also, in research carried out by Olubunmi et al 11 , they investigate the use of cassava peel ash and wood ash as partial cement replacements in concrete. Various replacement percentages were tested, with 5%, 10%, and 15% replacements meeting plain concrete strength specifications.…”

Section: Introductionmentioning

confidence: 99%

Optimization of cassava peel ash concrete using central composite design method

Iro,

Alaneme,

Attah

et al. 2024

Sci Rep

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Cassava peel ash (CPA) is an abundant agricultural byproduct that has shown promise as an additional cementitious material in concrete manufacturing. This research study aims to optimize the incorporation of CPA in concrete blends using the central composite design (CCD) methodology to determine the most effective combination of ingredients for maximizing concrete performance. The investigation involves a physicochemical analysis of CPA to assess its pozzolanic characteristics. Laboratory experiments are then conducted to assess the compressive and flexural strengths of concrete mixtures formulated with varying proportions of CPA, cement, and aggregates. The results show that a mix ratio of 0.2:0.0875:0.3625:0.4625 for cement, CPA, fine, and coarse aggregates, respectively, yields a maximum compressive strength of 28.51 MPa. Additionally, a maximum flexural strength of 10.36 MPa is achieved with a mix ratio of 0.2:0.0875:0.3625:0.525. The experimental data were used to develop quadratic predictive models, followed by statistical analyses. The culmination of the research resulted in the identification of an optimal concrete blend that significantly enhances both compressive and flexural strength. To ensure the reliability of the model, rigorous validation was conducted using student’s t-test, revealing a strong correlation between laboratory findings and simulated values, with computed p-values of 0.9987 and 0.9912 for compressive and flexural strength responses, respectively. This study underscores the potential for enhancing concrete properties and reducing waste through the effective utilization of CPA in the construction sector.

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Section: Introductionmentioning

confidence: 99%

Optimization of cassava peel ash concrete using central composite design method

Iro,

Alaneme,

Attah

et al. 2024

Sci Rep

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“…In crushing and excavation process though huge amount of petroleum energy is consumed, various researches are carried (Sastry and Pothala 2012;Sastry and Murthy 2015) to find an alternate sustainable petroleum product using natural raw source and still it's in progress for large scale productions. Cracks appear easily in concrete due to its brittle nature and mere tensile strength (Awad et al 2022;Ogunbode et al 2021). However, finding an alternative for primary materials (cement and aggregate) would be the acceptable solution for sustainable construction.…”

Section: Introductionmentioning

confidence: 99%

Self-healing evaluation of bacteria grouted light weight aggregate concrete containing rice husk ash and steel fibers

Anbazhagan,

Arunachalam,

Arunachalam

2024

RDLC

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Utilization of microbiologically induced calcite precipitation along with fiber composite have great influence on improving strength and durable properties of concrete. The concept of mechanical properties of grouted concrete added with bacteria, steel fibers (SF), rice husk ash (RHA) and light weight aggregate (LWA) has been focused on this work. In the fabrication of concrete specimens, concentration of bacteria, combination of steel fibers and LWA was placed in the formwork, and to fill the voids flowable grout was injected. The variables studied in this work are two different sizes of LWA viz., 10 mm and 12.5 mm with constant dosage of 2% hooked end steel fibers by volume of concrete, 10% RHA was used as cement replacement for preparation of grout and bacteria was incorporated in cement grout by direct application. The properties such as compressive strength (CS), compressive strength regain (CSR), crack width healing, impact strength for first crack and final failure, rate of healing was studied for pre-cracked specimens using visual and microscopic observation. In addition, microstructure was studied for grouted concrete without bacteria and with bacteria under immersed curing conditions. From the experimental results, performance of bacteria added grouted concrete properties such as CS, CSR, cracking healing capacity, and impact strength has improved with the addition of fibers.Utilization of microbiologically induced calcite precipitation along with fiber composite have great influence on improving strength and durable properties of concrete. The concept of mechanical properties of grouted concrete added with bacteria, steel fibers (SF), rice husk ash (RHA) and light weight aggregate (LWA) has been focused on this work. In the fabrication of concrete specimens, concentration of bacteria, combination of steel fibers and LWA was placed in the formwork, and to fill the voids flowable grout was injected. The variables studied in this work are two different sizes of LWA viz., 10 mm and 12.5 mm with constant dosage of 2% hooked end steel fibers by volume of concrete, 10% RHA was used as cement replacement for preparation of grout and bacteria was incorporated in cement grout by direct application. The properties such as compressive strength (CS), compressive strength regain (CSR), crack width healing, impact strength for first crack and final failure, rate of healing was studied for pre-cracked specimens using visual and microscopic observation. In addition, microstructure was studied for grouted concrete without bacteria and with bacteria under immersed curing conditions. From the experimental results, performance of bacteria added grouted concrete properties such as CS, CSR, cracking healing capacity, and impact strength has improved with the addition of fibers.

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“…Fibre reinforcements are commonly used to overcome those drawbacks as well as to enhance the tensile strength and improving the durability properties, i.e. thermal shock and fatigue resistance [3,[7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Critical evaluation of date palm sheath fibre characteristics as a reinforcement for developing sustainable cementitious composites from waste materials

Awad

Ghaffar

Hamouda

et al. 2022

Biomass Conv. Bioref.

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Decarbonizing the construction industry is an important step towards achieving the net-zero goals for many countries. New technologies and materials are extensively investigated and proposed to meet sustainability guidelines imposed by governments. This research develops a novel mix of sustainable pozzolanic cementitious composite ordinary Portland cement (OPC) with ground granulated blast-furnace slag (GGBS)) reinforced with date palm fibre (DPF) to evaluate the effect of varying DPF loading contents (1, 2, and 3 wt.%) and lengths (10, 20, 30, and 40 mm) on the mechanical (compressive and flexural strength) and physical properties (water absorption) of the produced composite. The effect of curing conditions and DPF surface modification on the mechanical and physical properties was also explored. The results showed that the utilization of DPF as a reinforcement for GGBS/OPC improves the flexural and compressive strength of the composites, which represents a sustainable alternative to synthetic reinforcements for construction applications. Optimal results were demonstrated at the inclusion of 20-mm alkali-treated DPF at a loading content of 1 wt.% showing an enhancement in strength by 57.12% and 30.97% of flexural and compressive strength, respectively, at 28 days of ageing in a water bath. Graphical abstract

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Mechanical and microstructure properties of cassava peel ash–based kenaf bio-fibrous concrete composites

Cited by 6 publications

References 34 publications

Optimization of cassava peel ash concrete using central composite design method

Optimization of cassava peel ash concrete using central composite design method

Self-healing evaluation of bacteria grouted light weight aggregate concrete containing rice husk ash and steel fibers

Critical evaluation of date palm sheath fibre characteristics as a reinforcement for developing sustainable cementitious composites from waste materials

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