Results 21 to 30 of about 513 (164)
Periwinkle Shell as Mixing Ingredient in Concrete: A Review
CONSTRUCTION, 2021 Growing population which also pushes for rising demand for seafood results in a generation of seashells which are thrown as environmental pollution waste after the edible meat is consumed. Meanwhile, the utilisation of natural resources as mixing ingredients for the production of concrete materials continues to increase over the year.
Ruslan, Hanis Nadiah +3 more
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Investigating the Performance of Palm Kernel Shells and Periwinkle Shells as Coarse Aggregates in Concrete [PDF]
LAUTECH Journal of Civil and Environmental Studies, 2020 Excessive usage of materials is causing fast depletion of natural stone deposit. This study therefore investigates the performance of palm kernel shells (PKS) and periwinkle shells (PS) as alternatives coarse aggregates in concrete. Forty cubes and 40 cylinders each were produced with PKS and PS as replacement materials for granite.
O.J Oladiran, D.R Simeon, O.A Olatunde
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Shoreline oiling effects and recovery of salt marsh macroinvertebrates from the Deepwater Horizon Oil Spill [PDF]
PeerJ, 2017 Salt marshes in northern Barataria Bay, Louisiana, USA were oiled, sometimes heavily, in the aftermath of the Deepwater Horizon oil spill. Previous studies indicate that fiddler crabs (in the genus Uca) and the salt marsh periwinkle (Littoraria irrorata)
Donald R. Deis +5 more
doaj +2 more sources
African Scientific Reports, 2023 A Significant proportion of rural households lacked access to improved and safe drinking water due to chemical and microbial contamination. Point-of-use (POU) water filters made from cheap, locally available ceramic materials and additives can achieve ...
Damilola T. Ogundele +5 more
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Thermal, structural and acetylation behavior of snail and periwinkle shells chitin [PDF]
Progress in Biomaterials, 2017 This article reports a successful removal of CaCO3 from snail and periwinkle shells for the purpose of producing high quality chitin for possible application as bio-fillers in bone fixation materials. Experiment was designed with varying concentrations of acid and alkali for demineralization, deproteinization and deacetylation of the samples.
Gbenebor, Oluwashina Philips +2 more
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Recent Advances in Natural Sciences, 2023 Sea-shells, periwinkle-shells, and snail-shells were pulverized into 35.5 µm particle sizes. Using a two-roll Rheomixer with a rotor speed of 60 rpm for 10 minutes, the particles were thoroughly mixed with the binders in ratio 2:1 and placed in the ...
Mufutau Abiodun Salawu +8 more
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Potentials of waste seashells as additives in drilling muds and in oil well cements
Cleaner Engineering and Technology, 2020 Additives to drilling fluids and oil well cements play a significant role during wellbore drilling operations. These additives (such as carboxymethyl cellulose and starch) are often expensive and most times degrade at high temperature conditions ...
Okorie Ekwe Agwu +2 more
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Removal of heavy metal ions by blended periwinkle shells
Global Journal of Pure and Applied Sciences, 2006 No Abstract. Global Journal of Pure and Applied Sciences Vol.
Okuo, James M., P.O. Okolo
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OPTIMISATION OF COMPRESSIVE STRENGTH OF PERIWINKLE SHELL AGGREGATE CONCRETE
Nigerian Journal of Technology, 2016 In this paper, a regression model is developed to predict and optimise the compressive strength of periwinkle shell aggregate concrete using Scheffe’s regression theory. The results obtained from the derived regression model agreed favourably with the experimental data.
Egamana, S, Sule, S
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Effect of sisal fibre on partially replaced cement with Periwinkles Shell Ash (PSA) concrete
Journal of Applied Sciences and Environmental Management, 2019 An investigation on the effect of sisal fiber on partially replaced cement with Periwinkle Shell Ash in Concrete was carried out. Sisal fiber of 40mm length which forms 1% of the mix by weight with Periwinkle shell Ash as a partial replacement for ...
J.O. Afolayan, U.N. Wilson, B Zaphaniah
doaj +1 more source