Optimisation of Compressive Strength of Periwinkle Shell  Aggregate Concrete

Egamana, S; Sule, S

doi:10.4314/njt.v36i1.5

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Obam [6] discovered that the third-degree polynomial predicts strength with an accuracy that is roughly 21% higher than the second-degree polynomial. This suggests that higher-order polynomials, which are laborious and time-consuming, are not required unless more accurate results are required.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Structural Properties of RHA-Concrete Using Osadebe’s Mathematical Program

Akeke¹

2023

ENG

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This research work focused on the analyses of the compressive strength, modulus of rupture and elasticity of RHA-concrete that was gathered from four states in Nigeria (Cross River, Ebonyi, Enugu, and Benue). The results were calculated and compared geographically by using Osadebe's mathematical program. They had corresponding relative silica values of 85, 75, 1, 65, 2, and 60.1. In place of cement, RHA was utilized in concrete at different percentages of replacement in the concrete. The results showed that strength values increased as RHA replacement increased by 5% -15% and decreased as the percentages of RHA in the concrete increased. When RHA is utilized to partially replace cement in concrete, the strength is improved. RHA is a yearly supply of silica and a naturally occurring pozzolan. The Compressive strength values varied between 37 and 42 N/mm 2 . The elastic modulus of a short cylinder obtained was between 3.15 and 3.7 N/mm 2 . It was discovered that the rupture modulus ranged from 0.6 to 4.2 N/mm 2 . Mathematical prediction models employing Osadebe's method were created. The findings confirmed that there were differentials in the results and laboratory responses of RHA concrete based on spatial properties, Fisher's statistical tool was used to confirm the adequacy of the model and the mean values, variance and critical values were found satisfactory for the 10 observation points.

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Section: Introductionmentioning

confidence: 99%

Optimization of the Structural Properties of RHA-Concrete Using Osadebe’s Mathematical Program

Akeke¹

2023

ENG

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“…A great many huge amounts of these wastes are created every day, industrial, domestic and agrarian waste takes an enormous level of these strong waste. Prominent materials, from solid wastes that have been utilized or discovered by scientists to be appropriate as partial replacement for constituent materials in concrete production incorporates: Glass powder [7]; waste glass [8]; pulverized bone [9,10]; rice husk ash [11][12][13]; plantain peel ash [14]; bone ash powder [15,16]; waste oil palm shells [17]; palm kernel shell [18]; periwinkle shell [19,20]; pulverized snail shell [21,22]; sea shells ash [23]; cassava starch [24]; bamboo leaf ash [25,26]; banana leaf powder [27]; groundnut shell ash [28,29]; and machine crushed animal bones [30]. These materials are either utilized independently or in blend, and for various concrete mix.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Ternary Blends of Pulverized Cow Bone Ash and Waste Glass Powder on the Strength Properties of Concrete

et al. 2022

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The amounts of agricultural waste in cow bone and industrial waste glass in Nigeria have been expanding significantly, thereby increasing the danger to general wellbeing particularly in urban communities. This research examined the suitability of ternary blends of pulverized cow bone ash and waste glass powder (PCBAWGP) equally combined and partially replaced Portland cement in 0, 10, 20, 30 and 40 % percentages in concrete production. Physical and chemical properties were done on the concrete constituent materials. Compressive and tensile strengths of the hardened concrete of grade M20, mix proportion 1:2.17:3.4 were tested after 7, 14, 28, 60 and 90 days. The result of the physical properties uncovered that PCBAWGP had 2.70, 2.05 % and 1364 kg/m3 for specific gravity, moisture content and bulk density, respectively. From the consequences of the compressive strength, it showed that as the curing age of the concrete increases, the compressive strength expanded, the compressive strength outcomes at 10 % PCBAWGP partially replaced concrete is 15.55, 24.15, 19.85, 27.60 and 37.98 N/mm2 individually at 7, 14, 28, 60 and 90 days. At 90 days curing age, the tensile strength results for the control mix and 20 % PCBAWGP replacement was 2.72 and 1.88 N/mm2, respectively. The concrete strengths improved with concrete age and this was statistically affirmed utilizing ANOVA. This investigation showed that utilizing PCBAWGP in concrete is sustainable thereby reducing the dumped wastes and lessen CO2 outflows into the atmosphere by diminishing the extent of Portland cement in unit volume of cement produced. HIGHLIGHTS The compressive strength of concrete reduces as % pulverized cow bone ash and waste glass powder PCBAWGP increases. The compressive strength generally increases with increase in age of curing. The minimum and maximum compressive strength of concrete at 10 and 40 % PCBAWGP content for 1:2.17:3.4 concrete mix ratio at 28- and 90-days curing age are 19.85, 37.98 N/mm2 and 15.68, 22.31 N/mm2, respectively The minimum and maximum tensile strength of concrete at 10 and 40 % PCBAWGP at 28- and 90-days curing age are 1.71, 2.19 N/mm2 and 0.70, 1.55 N/mm, respectively The result of the water absorption tests at 28 days and 90 days showed that concrete samples containing PCBAWGP built up a superior protection from harm by freezing as their outcomes were less than 7 % recommendation Concrete containing PCBAWGP contents up to 20 % as partial replacement for cement, fulfills the strength required for normal concrete From the production comparative cost analysis, concrete with PCBAWGP content, as partial substitution for cement, is cheaper than conventional concrete of equivalent strength GRAPHICAL ABSTRACT

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“…Research has also confirmed the feasibility of incorporating even more others in concrete production. These materials include: recycled concrete aggregate (Tahar et al, 2020;Paewchompo et al, 2020), polystyrene aggregate (Tang et al, 2008), periwinkle and palm kernel shell (Egamana and Sule, 2017), quarry sand Kaish et al, 2021) and of recent, ceramic wastes (Bartosz et al, 2016;Halicka et al, 2013;Awoyera et al, 2018;2021b;Elci, 2016). Unlike organic wastes like sawdust which are biodegradable (Etim et al, 2017), ceramic wastes are non-biodegradable (Halicka, et al, 2013;Zimbili et al, 2015).…”

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confidence: 99%

Mathematical Modelling of Compressive Strength of Recycled Ceramic Tile Aggregate Concrete Using Modified Regression Theory

Onyia¹,

Ambrose²,

Okafor³

et al. 2023

jasem

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At present, the large quantity of wastes generated by the ceramic industry is not reused in any significant quantity. Research has shown the feasibility of incorporating these wastes into concrete production. This will benefit both the ceramic and concrete industries. However, not much research data is available on the use of ceramic wastes as fine aggregate material compared to their use as coarse aggregate material. Moreover, there are presently no models for predicting the properties of ceramic waste aggregate concretes. In this study, a modified regression theory based on Taylor’s series was adopted to formulate mathematical model for predicting compressive strength of concrete into which Recycled Ceramic Tile (RCT) is incorporated as fine aggregate. Preliminary tests on RCT indicate that it is a suitable fine aggregate material for concrete production. It has also been established that addition of RCT improves compressive strength of concrete and reduces concrete’s workability. The formulated model is a function of the mix proportions of its constituents and its predicted responses are in good agreement with experimentally observed data. The model has been tested using student’s t-test and analysis of variance and has been confirmed to be adequate and hence is validated.

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Optimisation of Compressive Strength of Periwinkle Shell Aggregate Concrete

Cited by 4 publications

References 1 publication

Optimization of the Structural Properties of RHA-Concrete Using Osadebe’s Mathematical Program

Optimization of the Structural Properties of RHA-Concrete Using Osadebe’s Mathematical Program

Performance Evaluation of Ternary Blends of Pulverized Cow Bone Ash and Waste Glass Powder on the Strength Properties of Concrete

Mathematical Modelling of Compressive Strength of Recycled Ceramic Tile Aggregate Concrete Using Modified Regression Theory

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