Results 11 to 20 of about 725,953 (68)

Performance of Periwinkle Shell Ash Blended Cement Concrete Exposed to Magnesium Sulphate [PDF]

open access: yesCivil Engineering Dimension, 2013
The study examined the compressive strength of periwinkle shell ash (PSA) blended cement concrete in magnesium sulphate medium. Specimens were prepared from designed characteristics strength of 25 MPa. The cement replacement with PSA ranged between 0 and
Umoh A.A., Olusola K.O.
doaj   +6 more sources

HETEROGENEOUS PHOTOCATALYTIC DEGRADATION OF PHENOL IN AQUEOUS SUSPENSION OF PERIWINKLE SHELL ASH CATALYST IN THE PRESENCE OF UV FROM SUNLIGHT [PDF]

open access: yesJournal of Engineering Science and Technology, 2015
The batch photocatalytic degradation of phenol in aqueous solution wasinvestigated using periwinkle shell ash (PSA) as photocatalyst. Chemical characterisation of the PSA revealed that the major oxides present were calcium oxide (CaO), silica (SiO2) and ...
OSARUMWENSE, J. O.   +2 more
doaj   +1 more source

Improving the strength performance of high volume periwinkle shell ash blended cement concrete with sodium nitrate as accelerator [PDF]

open access: yes, 2015
 The objective of this study is to examine the effect of accelerator (NaNO3) on the strength properties of High volume Periwinkle shell ash blended cement concrete. A mix ratio and water-binder ratio of 1:2:4 (cement: sand: gravel) and 0.60, respectively
Ujene, Anthony O., Umoh, Akaninyene A.
core   +2 more sources

Behaviour of periwinkle shell ash blended cement concrete in sulphuric acid environment [PDF]

open access: yes, 2018
This paper presents the influence of sulphuric acid on compressive strength of concrete made with cement blended with periwinkle shell ash (PSA). The cement component was replaced with PSA at 0 %, 5 %, 10 %, 15 % and 20 %. Concrete mix ratio of 1:2:4 and
Attah, I.C., Etim, R.K., Ekpo, D.U.
core   +1 more source

POTENTIAL APPLICATION OF A LOCALLY SOURCED PHOTOCATALYST FOR THE PHOTOCATALYTIC DECOLOURISATION OF METHYL ORANGE IN AQUEOUS SOLUTION [PDF]

open access: yesJournal of Engineering Science and Technology, 2015
Periwinkle shell ash (PSA) was investigated for its photocatalytic properties in decolourising methyl orange in aqueous solution. The effects of irradiation time, initial dye concentration and PSA dosage on the decolourisation process were investigated ...
F. A. AISIEN   +2 more
doaj  

Comparative Evaluation of Concrete Properties with Varying Proportions of Periwinkle Shell and Bamboo Leaf Ashes Replacing Cement [PDF]

open access: yes, 2013
The paper examined the performance of ternary blended cement concrete incorporating periwinkle shell ash (PSA) and bamboo leaf ash (BLA) as cement supplements.
Umoh, AA, Femi, OO
core   +1 more source

Assessing the Mechanical Performance of Ternary Blended Cement Concrete Incorporating Periwinkle Shell and Bamboo Leaf Ashes [PDF]

open access: yes, 2013
The study investigates the mechanical properties of concrete incorporating Periwinkle Shell Ash (PSA) and Bamboo Leaf Ash (BLA) as cementitious binders. Concrete cube (100mm) prepared from a standardized prescribed mix of 1:2:4, batch by volume was taken
A. Umoh, Akaninyene   +3 more
core   +1 more source

Synergic effect of metakaolin and groundnut shell ash on the behavior of fly ash-based self-compacting geopolymer concrete [PDF]

open access: yes, 2021
The sustainable self-compacting geopolymer concrete (SCGC) production is an eco-efficient concrete with a lower carbon footprint than conventional concrete.
Tafsirojjaman, T.   +5 more
core   +1 more source

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

open access: yesAdvances 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   +2 more
wiley   +1 more source

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

open access: yes, 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.   +1 more
core  

Home - About - Disclaimer - Privacy