Results 51 to 60 of about 651,107 (166)

Analyzing the Mechanical, Durability, and Microstructural Impact of Partial Cement Replacement with Pumice Powder and Bamboo Leaf Ash in Concrete

Advances in Civil Engineering, Volume 2024, Issue 1, 2024.
This study explores the physiomechanical and durability properties of C‐25 concrete by partially replacing cement with blends of pumice powder (PP) and bamboo leaf ash (BLA). The combined amount of major oxides SiO2, Al2O3, and Fe2O3 in PP is 84.59%, while in BLA, it is 74.4%, classifying PP and BLA as class N and F pozzolans.
Haris Hassen Adem, Fikreyesus Demeke Cherkos, Navaratnarajah Sathiparan   +2 more
wiley   +1 more source

Physical, chemical, and mineralogical properties of agromarine waste ash

Discover Materials
Agro-marine waste presents environmental challenges, demanding sustainable solutions. This study explores the potential of ashes from periwinkle shells, plantain stems, and eucalyptus wood for sustainable material use. Physical analyses reveal Periwinkle
Obinna O. Barah, Milon S. Dennison, Stephen N. Nnamchi, Kennedy C. Onyelowe, Emmanuel B. O. Olotu   +4 more
doaj   +1 more source

Optimization and Modeling of Cyanide Removal from Cassava Waste Water Using Calcined and Activated Adsorbent Mixtures of Oyster Shell and Periwinkle Shell Ash

Journal of Engineering Research and Reports, 2023
Cyanide, a toxic compound found in cassava wastewater which on frequent basis is discharged to the environment poses danger to the ecosystem; this research work aims to curb this menace. Temperature, pH, dosage, contact time, adsorbent mixture ratio and initial concentration were optimized using CCD on periwinkle-oyster shells composite mixtures for ...
Chukwunonso O. Njoku, B. R. Etuk
openaire   +1 more source

Development of objective test functions for modeling and sensitivity analysis of the mechanical behaviour of aluminum-agro-marine waste composites

Materials Research Express
Aluminum-based composites reinforced with agro-marine waste materials present an eco-friendly, cost-effective solution for industries needing lightweight and durable materials.
Obinna Onyebuchi Barah, Stephen Ndubuisi Nnamchi, Milon Dennison Selvam, Mustafah Muhamad Mundu, Abubakar Abdulkarim   +4 more
doaj   +1 more source

Sustainable mechanochemical synthesis of zeolite/periwinkle shell nanocomposites for lead adsorption and antimicrobial activity

Next Materials
Zeolite/periwinkle shell ash (Ze/PSA) nanocomposite was prepared via the mechanochemical technique and characterized by SEM/EDX, TEM, AFM, XRD, FTIR, and BET to determine its morphological, structural, and surface characteristics for Pb2 + adsorption and
Prosper Elechi, Amarachi Udoka Nkwoada, Clinton Silas Okpara, Tochukwu Ifeanyi Nwakile, Dele.Peter Fapojuwo, Chidozie Peter Chikezie, Samuel Anthonio Kalu, Callistus Izunna Iheme, Chike Anthony Nweze, Stanley Chinonso Ukanero, Chima Kenneth Oguzie, Christopher Ikpe-Amadi Nwoko   +11 more
doaj   +1 more source

Iceberg Scour and Shell Damage in the Antarctic Bivalve Laternula elliptica [PDF]

, 2012
We document differences in shell damage and shell thickness in a bivalve mollusc (Laternula elliptica) from seven sites around Antarctica with differing exposures to ice movement. These range from 60% of the sea bed impacted by ice per year (Hangar Cove,
Peck, Lloyd S., Lloyd S Peck, Simon A Morley, Hoffman, Joseph ; https://orcid.org/, Hoffman, Joseph I., Melody S Clark, Clark, Melody S., Harper Elizabeth M., Peck, L, Harper, L, Hoffman Joseph I., Harper, Elizabeth M., Elizabeth M Harper, Clark Melody S., Peck Lloyd S., Philipp, Eva E. R., Morley, Simon A., Eva E R Philipp, Morley Simon A., Clark, M S, Joseph I Hoffman, Philipp Eva E. R., Morley, S   +22 more
core   +2 more sources

Experimental Investigation and Predictive Modelling of Sustainable Concrete Incorporating Rice Husk Ash and Periwinkle Shell Ash

ARID ZONE JOURNAL OF ENGINEERING TECHNOLOGY AND ENVIRONMENT
Concrete remains the most widely used construction material globally but the durability and performance of concrete structures have become a critical concern in modern construction. Concrete is exposed to chemical attacks that significantly affect its long-term strength and integrity.
Ibu, T. A., Aboshio, A., Alhassan, A.
openaire   +2 more sources

OPTIMISATION OF COMPRESSIVE STRENGTH OF PERIWINKLE SHELL AGGREGATE CONCRETE [PDF]

, 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.
Egamana, S, Sule, S
core   +1 more source

Compressive Strength and Static Modulus of Elasticity of Periwinkle Shell Ash Blended Cement Concrete [PDF]

, 2012
The study examined the effect of periwinkle shell ash as supplementary cementitious material on the compressive strength and static modulus of elasticity of concrete with a view to comparing it’s established relation with an existing model.
Olusola, Kolapo O., Umoh, Akaninyene Afangide   +1 more
core  

Shell road guide Tasmania [cartographic material].

, 1948
Panel title: Shell road map Tasmania.; Road map of Tasmania showing classes of roads, distances, National Parks, with tables "Tasmanian highways", and index ancillary street and district maps on verso.; On verso: City of Hobart -- City of Launceston ...
Shell Company of Australia.
core