Influence of Polyvinyl Alcohol, Steel, and Hybrid Fibers on Fresh and Rheological Properties of Self-Consolidating Concrete

2012 ◽  
Vol 24 (9) ◽  
pp. 1211-1220 ◽  
Author(s):  
K. M. A. Hossain ◽  
M. Lachemi ◽  
M. Sammour ◽  
M. Sonebi
Keyword(s):  
Polyvinyl Alcohol ◽  
Rheological Properties ◽  
Hybrid Fibers ◽  
Self Consolidating Concrete

scholarly journals Numerical Simulations of GFRP-Reinforced Columns Having Polypropylene and Polyvinyl Alcohol Fibers

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Liaqat Ali ◽  
Ahsan Nawaz ◽  
Yong Bai ◽  
Ali Raza ◽  
Muhammad Kashif Anwar ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Numerical Model ◽  
Polyvinyl Alcohol ◽  
Circular Cross Section ◽  
Fiber Reinforced Concrete ◽  
Elastic Model ◽  
Fiber Reinforced ◽  
Hybrid Fibers ◽  
Element Analysis ◽  
Gfrp Bars

The present investigation aims to propose a numerical model for assessing the complex damaging response of glass fiber-reinforced polymer- (GFRP-) reinforced concrete columns having hybrid fibers and confined with GFRP spirals (GFHF columns) under concentric and eccentric compression. Fiber-reinforced concrete (FRC) consists of polyvinyl alcohol fibers (PVA) and polypropylene fibers (PF). A total of six GFHF circular columns were constructed having a circular cross section of 250 mm and a height of 1200 mm. A commercial package ABAQUS was used for the finite element analysis (FEA) of the GFHF columns by using a modified concrete damage plastic (CDP) model for hybrid fiber-reinforced concrete (HFRC). The damaging response of GFRP bars was defined using a linear elastic model. The results depicted that the failure of GFHF columns occurred either in the upper or in the lower half portion with the rupture of GFRP longitudinal bars and GFRP spirals. The decrease in the pitch of GFRP spirals led to an improvement in the axial strength (AS) of GFHF columns. The eccentric loading caused a significant reduction in the AS of columns. The comparative study solidly substantiates the validity and applicability of the newly developed FEA models for capturing the AS of GFHF columns by considering the axial involvement of longitudinal GFRP bars and the confinement effect of transverse GFRP spirals. So, the suggested numerical model having a complex system of equations for HFRC can be used for the accurate analysis of HFRC members.

Ionenes based on polyvinyl alcohol and the rheological properties of their solutions

1991 ◽  
Vol 33 (11) ◽  
pp. 2189-2194
Author(s):  
V.V. Ryabenko ◽  
D.O. Timoshenko ◽  
A.N. Dudka ◽  
I.A. Uskov
Keyword(s):  
Polyvinyl Alcohol ◽  
Rheological Properties

scholarly journals Studying the Rheological Properties of Non-Newtonian Fluids Under the Addition of Different Chemical Additives

2020 ◽  
Vol 23 (1) ◽  
pp. 68-80
Author(s):  
Douaa Hussein Ali ◽  
Muhannad A.R. Mohammed
Keyword(s):  
Sodium Chloride ◽  
Polyvinyl Alcohol ◽  
Rheological Properties ◽  
Apparent Viscosity ◽  
Xanthan Gum ◽  
Methyl Cellulose ◽  
Carboxy Methyl Cellulose ◽  
Chemical Additives ◽  
Low Viscosity ◽  
Carboxy Methyl

This research study the rheological properties ( plastic viscosity, yield point and apparent viscosity) of non-Newtonian fluids under the addition of different chemical additives with different concentrations, such as (xanthan gum (xc-polymer) , carboxy methyl cellulose ( high and low viscosity ) ,polyacrylamide, polyvinyl alcohol, starch, quebracho, chrome lignosulfonate, and sodium chloride (NaCl). Fann viscometer model 800 with 8-speeds was used to measure the rheological properties of these samples, that have already been prepared. All samples were subjected to Bingham plastic model. It was concluded that the plastic viscosity, yield point and apparent viscosity should be increased with increasing the concentrations of (xanthan gum (xc-polymer) , carboxy methyl cellulose ( high and low viscosity ) ,polyacrylamide, polyvinyl alcohol, starch and sodium chloride (NaCl), while the opposite is true for quebracho, chrome lignosulfonate.

scholarly journals Rheological Properties of Compositions Based on Modified Polyvinyl Alcohol

2017 ◽  
Vol 11 (3) ◽  
pp. 304-309 ◽  
Author(s):  
Volodymyr Krasinskyi ◽  
Oleh Suberlyak ◽  
Antonuk Viktoria ◽  
Tomasz Jachowicz
Keyword(s):  
Polyvinyl Alcohol ◽  
Rheological Properties
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