scholarly journals The effect of metakaolin on the hardening process of alkali activated slag by using electrochemical impedance spectroscopy

2019 ◽  
Vol 300 ◽  
pp. 052011
Author(s):  
Yuan Fang ◽  
Hongbiao Li ◽  
Zhaohua Wang ◽  
Kunde Zhang ◽  
Peng Cui ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Alkali Activated Slag ◽  
Hardening Process ◽  
Activated Slag ◽  
Alkali Activated

The Identification of Cracks Formed during the Spontaneous Drying and Hardening of Alkali-Activated Slag for Different Curing Times

2016 ◽  
Vol 827 ◽  
pp. 340-343
Author(s):  
Libor Topolář ◽  
Hana Šimonová ◽  
Lubos Pazdera
Keyword(s):  
Brittle Materials ◽  
Material Behaviour ◽  
Alkali Activated Slag ◽  
Hardening Process ◽  
Curing Method ◽  
Activated Slag ◽  
Alkali Activated

This paper reports the results of measurements during hardening and drying of specimens made of alkali activated slag mortars. The aim of this paper is introduce the effect of curing method and time on the microstructure of alkali activated slag mortars. An understanding of microstructure−performance relationships is the key to true understanding of material behaviour. The results obtained in the laboratory are useful to understand the various stages of micro-cracking activity during the hardening process in quasi-brittle materials such as alkali activated slag mortars and extend them for field applications.

Influence of Superplasticizer Quantity on Formation of Micro-Cracks during Setting and Hardening of Concretes by Acoustic Emission Method

2015 ◽  
Vol 1124 ◽  
pp. 219-224 ◽  
Author(s):  
Libor Topolář ◽  
Kristýna Timcakova ◽  
Petr Misák
Keyword(s):  
Acoustic Emission ◽  
Building Materials ◽  
Material Behaviour ◽  
Emission Method ◽  
Alkali Activated Slag ◽  
Volumetric Expansion ◽  
Hardening Process ◽  
Micro Cracks ◽  
Activated Slag ◽  
Alkali Activated

The acoustic emission phenomenon is directly associated with nucleation of cracks in building materials, therefore the changes result from the volumetric expansion causing formation micro and macro cracking in structure, which we can recognize. The main aim of the article is to compare four ways of curing alkali activated slag mortars by method of acoustic emission. A comprehension of microstructure−performance relationships is the key to true understanding of material behaviour. The results obtained in the laboratory are useful to understand the various stages of micro-cracking activity during the hardening process in quasi-brittle materials such as alkali activated slag mortars and extend them for general practice

Sign in / Sign up

Export Citation Format

Share Document