Predictive Corrosion-Inhibition Model for Mild Steel in Sulphuric Acid (H2SO4) by Leaf-Pastes of Sida Acuta Plant
Agha Inya Ndukwe,
Charles Nwachukwu Anyakwo
Issue:
Volume 2, Issue 5, October 2017
Pages:
123-133
Received:
18 August 2017
Accepted:
7 September 2017
Published:
9 October 2017
DOI:
10.11648/j.jccee.20170205.11
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Abstract: The study of the corrosion inhibition of mild steel in sulphuric acid (H2SO4) by the leaf pastes of Sida Acuta was probed using the weight-loss technique. The highest inhibition efficiency of 91.46% with a reduction in corrosion rate from 3.1338mg.cm-2.h-1 to 0.2825mg.cm-2.h-1 was achieved by the addition of the leaf pastes of Sida Acuta at 30g per litre of 1.2M H2SO4. The prediction obtained using the artificial neural network gave the least error and was closer to the experimental corrosion rate value in comparison with the prediction by multiple regression.
Abstract: The study of the corrosion inhibition of mild steel in sulphuric acid (H2SO4) by the leaf pastes of Sida Acuta was probed using the weight-loss technique. The highest inhibition efficiency of 91.46% with a reduction in corrosion rate from 3.1338mg.cm-2.h-1 to 0.2825mg.cm-2.h-1 was achieved by the addition of the leaf pastes of Sida Acuta at 30g per...
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Predictive Model to Monitor the Rate of Dissolved Calcium Influenced by Void Ratio in Coarse Bed Formation in Coastal Area of Amadi-Ama Area of Rivers State
Eluozo Solomon Ndubuisi,
Ekeleme Anthony Chibuzo
Issue:
Volume 2, Issue 5, October 2017
Pages:
134-139
Received:
30 September 2016
Accepted:
13 May 2017
Published:
20 October 2017
DOI:
10.11648/j.jccee.20170205.12
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Abstract: This paper investigate the rate of dissolved calcium deposition in fine and coarse formation, the study is to monitor the rate of dissolved calcium content at different lithostratgraphy in the study location. Homogeneous fine and coarse formation were observed to deposit in the study location, organic soil were insignificant since the formation deposited slight quantity, the study observed predominant homogeneous fine and coarse soil strata, the permeability and porosity deposition were at high rate in various formation, the reflection of porosity and permeability were experienced on decreasing rate of dissolved calcium to phreatic beds. To monitor the deposition of dissolved calcium, the developed model expressed simulation values that were compared with experimental values, and both parameters express best fits validating the developed model. Experts will definitely apply the concept as a useful tool in monitoring and evaluation of dissolved calcium in unconfined beds.
Abstract: This paper investigate the rate of dissolved calcium deposition in fine and coarse formation, the study is to monitor the rate of dissolved calcium content at different lithostratgraphy in the study location. Homogeneous fine and coarse formation were observed to deposit in the study location, organic soil were insignificant since the formation dep...
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Study on the Concentration of Moment at Slab-column Joints Due to Presence of Shear Walls in Different Positions
Mohammad Rafiqul Islam,
Abbas Ali,
Mohammad Emran Tahir
Issue:
Volume 2, Issue 5, October 2017
Pages:
140-146
Received:
10 September 2017
Accepted:
25 September 2017
Published:
20 October 2017
DOI:
10.11648/j.jccee.20170205.13
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Abstract: A ten-storied building with shear walls in two directions with respect to the direction of lateral load acting on the building has been studied here. The finite element based software, ETABS (version 9.6) has been used for determining the moment at different area objects due to the lateral load and Simpson’s one-third rule has been used to calculate the line moment from mesh area. The study shows that, Shear Wall-1 (perpendicular to the lateral load direction) system produces more moment than the Shear Wall-2 (parallel to the load direction) system but around 45 percent of total negative or positive moment passes through column strip in SW-1 system and around 99 percent of negative or positive moment passes through the same strip in SW-2 system while rest of the moment passes through middle strip. Around 80 percent of column strip moment passes through effective strip (c+3h) in both of two systems.
Abstract: A ten-storied building with shear walls in two directions with respect to the direction of lateral load acting on the building has been studied here. The finite element based software, ETABS (version 9.6) has been used for determining the moment at different area objects due to the lateral load and Simpson’s one-third rule has been used to calculat...
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