Strength evaluation by using polycarboxylate superplasticizer and solidification efficiency of Cr 6+ , Pb 2+ and Cd 2+ in composite based geopolymer

2018 ◽  
Vol 188 ◽  
pp. 807-815 ◽  
Author(s):  
Faheem Muhammad ◽  
Xiao Huang ◽  
Shan Li ◽  
Ming Xia ◽  
Manli Zhang ◽  
...  
Keyword(s):  
Strength Evaluation ◽  
Polycarboxylate Superplasticizer

Strength evaluation of deteriorated girder ends. II: Numerical study on corroded I-beams

2020 ◽  
pp. 107216
Author(s):  
Georgios Tzortzinis ◽  
Brendan T. Knickle ◽  
Alexander Bardow ◽  
Sergio F. Breña ◽  
Simos Gerasimidis
Keyword(s):  
Numerical Study ◽  
Strength Evaluation

Residual strength evaluation of Notre Dame surviving masonry after the fire

2021 ◽  
Vol 122 ◽  
pp. 105183
Author(s):  
A. Manuello Bertetto ◽  
P. D'Angella ◽  
M. Fronterre'
Keyword(s):  
Residual Strength ◽  
Strength Evaluation

scholarly journals Investigation of the Behavior and Mechanism of Action of Ether-Based Polycarboxylate Superplasticizers Absorption on Large Bibulous Stone Powder

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2736
Author(s):  
Zuiliang Deng ◽  
Guimin Lu ◽  
Lefeng Fu ◽  
Weishan Wang ◽  
Baicun Zheng
Keyword(s):  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Zeta Potential ◽  
Mechanism Of Action ◽  
Water Consumption ◽  
Pore Volume ◽  
High Water ◽  
Hydrodynamic Diameter ◽  
Coarse Aggregates ◽  
Polycarboxylate Superplasticizer

The aim of this paper is to study the adsorption behavior of polycarboxylate superplasticizers (PCE) on coarse aggregates with a property of high water consumption (above 2%). The coarse aggregates were ground into a powder to create large bibulous stone powder, and it was observed that significant amounts of the ether-based PCE were absorbed onto large bibulous stone powder. The adsorption rate immediately reached a maximum after 5 min and then gradually decreased until an equilibrium absorption was established after 30 min. Zeta potential, infrared spectroscopy, and thermogravimetric analysis (TGA) measurements confirmed that the polycarboxylate superplasticizer adsorbed on the surface of the stone powder. Hydrodynamic diameter measurements showed that the polycarboxylate superplasticizer molecules were smaller than pore size, and the surface area and pore volume were reduced by the polymer incorporation in the pores.

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