Hydration of Calcium Aluminates in Presence of Granulated Blastfurnace Slag

1990 ◽  
pp. 275-287
Keyword(s):  
Calcium Aluminates ◽  
Blastfurnace Slag

Simulations on Expansive Strain of Concrete Caused by Ettringite Growth under Sulfate Attack

2011 ◽  
Vol 250-253 ◽  
pp. 1906-1911 ◽  
Author(s):  
Xiao Bao Zuo ◽  
Wei Sun
Keyword(s):  
Sulfate Solution ◽  
Sulfate Attack ◽  
Diffusion Time ◽  
Diffusion Reaction ◽  
Sulfate Ion ◽  
Reaction Equation ◽  
Ettringite Formation ◽  
Sulfate Solutions ◽  
Calcium Aluminates ◽  
Strain Responses

In order to assess theoretically the expansive strain of concrete caused by the ettringite formation and growth under the sulfate attack, some models are proposed to investigate the strain responses of concrete exposed to the sulfate solutions. Firstly, an 1-D nonlinear and nonsteady diffusion-reaction equation of sulfate ion in concrete is proposed; Secondly, based on chemical reactions between sulfate and aluminates in concrete, the expansive strain is obtained due to the ettringite growth resulting in concrete expansion. Thirdly, numerical simulations are carried out to analyze the formation process of the concrete expansive strain under the sulfate solution, and results show that the models can be used to predict the concrete responses with the diffusion time, such as the distribution concentration of sulfate ion, dissipated concentration of the calcium aluminates, expansion strain of concrete due to the formation and growth of ettringite.

scholarly journals Mixed Electrical Conduction of Calcium Aluminates Synthesized by Polymeric Precursors

2018 ◽  
Vol 22 (1) ◽  
Author(s):  
Faili Cintia Tomsen Veiga ◽  
Ricardo Fernández González ◽  
José Jurado Egea ◽  
Sergio da Silva Cava ◽  
Vânia Caldas de Sousa
Keyword(s):  
Electrical Conduction ◽  
Polymeric Precursors ◽  
Calcium Aluminates

Thermodynamic properties of calcium aluminates

1981 ◽  
Vol 85 (19) ◽  
pp. 2835-2838 ◽  
Author(s):  
Isaac Eliezer ◽  
Naomi Eliezer ◽  
Reed A. Howald ◽  
Puligandla Viswanadham
Keyword(s):  
Thermodynamic Properties ◽  
Calcium Aluminates
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