Results 181 to 190 of about 397,996 (210)
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The Potential Use of Periwinkle Shell as Coarse Aggregate for Concrete
Advanced Materials Research, 2009The potential of periwinkle shell as coarse aggregate for concrete was studied in this paper. The properties of concrete made with periwinkle shell as coarse aggregate were examined. Test conducted on the concrete was compressive strength test. Prescribed mix designs of 1:1:2, 1:2:3, 1:4:6, 1:2:4 and 1:3:5 were used to produce concrete cubes used for
J.O. Osarenmwinda, A.O. Awaro
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International Journal of Advances in Engineering and Management
This study assessed the efficacy of periwinkle shell ash and periwinkle shell powder in bioremediation of crude oil-polluted mangrove soil. The 48-week experiment was conducted using a wooden microcosm (3.75 m2), subdivided into 18 cells (0.25 m), with each containing 20 kg of contaminated soil.
Nduonofit, E. E Nduonofit, E. E +2 more
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This study assessed the efficacy of periwinkle shell ash and periwinkle shell powder in bioremediation of crude oil-polluted mangrove soil. The 48-week experiment was conducted using a wooden microcosm (3.75 m2), subdivided into 18 cells (0.25 m), with each containing 20 kg of contaminated soil.
Nduonofit, E. E Nduonofit, E. E +2 more
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Evaluation of organic enhancer on the mechanical properties of periwinkle shells concrete
Journal of Engineering Innovations and Applications, 2022The utilization of green materials in engineering applications has become a necessity due to the negative environmental and health consequences of most synthetic materials. Enhancement of periwinkle shell concrete through corn starch treatment was investigated in this study.
O. Eboibi, O. I. Akpokodje, H. Uguru
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MECHANICAL PROPERTIES OF PALM KERNEL SHELL CONCRETE IN COMPARISON WITH PERIWINKLE SHELL CONCRETE
Malaysian Journal of Civil Engineering, 2018Comparative analysis of mechanical properties of palm kernel shell concrete with periwinkle shell concrete is presented in the paper. The binder and fine aggregate were Ordinary Portland cement and river sand, respectively, while potable water was used for mixing and curing. The constituent materials were batched by weight. Concrete mix ratio was 1:2:4
Uchechi G. Eziefula +2 more
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An investigation of periwinkle shells as coarse aggregate in concrete
Building and Environment, 1995Abstract An Investigation into using periwinkle shells (PWS) partially or wholly in concrete is reported. Three standard mixes of cement: sand: granite + PWS (1: 1 1 2 :3, 1:2:4 and 1:3:6) and two design mixes of cement: sand: PWS (1: 3 1 2 :1 and 1: 4 1 2 : 1 case1 2 ) were used.
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Stimulated Biodegradation of Crude Oil in Soil Amended with Periwinkle Shells
Environmentalist, 2003The potential of periwinkle shell (PS) in enhancing the microbial break down of crude oil spilled in soil were studied. The results revealed that the counts of crude oil degrading bacteria in oil-polluted soil fortified with PS were higher than the counts in unfortified soil.
U.J.J. Ijah, M. Ndana
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The suitability of periwinkle shells as coarse aggregate for structural concrete
Matériaux et Constructions, 1974The results of an exploratory investigation on the suitability of periwinkle shells as coarse aggregate for concrete are reported. The tests show that the strength of concrete made with periwinkle shells are limited by the strength of the shells but high enough for structural concrete.
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A geographically-based study of shell shape in small rough periwinkles
Hydrobiologia, 1995A study using principal component analysis and discriminant analysis was carried out on shell shape variation in 3093 specimens of rough periwinkles, 2500 of which were below 5.5 mm in columella length, from around the North Atlantic. Using a combination of colour plus sculpture, and life history trait, the snails were classified by inspection and ...
K. J. Caley, J. Grahame, Peter J. Mill
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Strength Characteristics of Periwinkle Shell Ash Blended Cement Concrete
International Journal of Architecture, Engineering and Construction, 2012The study investigated the eect of periwinkle shell ash (PSA) as cement substitute on the strengths of concrete. Specimens were prepared from a mix of designed strength 25N=mm 2 and the replacement of cement with PSA was from 0% up to 40%. A total of 180 specimens were cast and tested for compressive and tensile splitting strength at 7 and up to 180 ...
Kolapo O. Olusola, Akaninyene A. Umoh
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Environmental Science and Pollution Research
Periwinkle and coconut shells are becoming increasingly popular as dielectric materials with thermal insulation properties. Natural sources of synthesis could provide a cheaper and more ecologically friendly alternative to chemically synthesizing such compounds as thermal insulators or fillers in polymer composites.
Thomas Ojonugwa Daniel
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Periwinkle and coconut shells are becoming increasingly popular as dielectric materials with thermal insulation properties. Natural sources of synthesis could provide a cheaper and more ecologically friendly alternative to chemically synthesizing such compounds as thermal insulators or fillers in polymer composites.
Thomas Ojonugwa Daniel
exaly +3 more sources