Impact of Slag Content and Curing Methods on the Strength of Alkaline-Activated Silico-Manganese Fume/Blast Furnace Slag Mortars

2019 ◽  
Vol 44 (10) ◽  
pp. 8325-8335 ◽  
Author(s):  
Muhammad Nasir ◽  
Megat Azmi Megat Johari ◽  
Moruf Olalekan Yusuf ◽  
Mohammed Maslehuddin ◽  
Mamdouh A. Al-Harthi ◽  
...  
2010 ◽  
Vol 64 (1) ◽  
pp. 575-581
Author(s):  
Shunsuke HANEHARA ◽  
Nobukazu NITO ◽  
Kiyoshi KOIBUCHI ◽  
Tetsuya OYAMADA

2018 ◽  
Vol 35 (4) ◽  
pp. 356-361
Author(s):  
Yong-Jun Kim ◽  
Nam-Il Uhm ◽  
Woo-Il Kim ◽  
Jung-Keun Oh ◽  
Sun-Kyoung Shin ◽  
...  

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2349
Author(s):  
Jerzy Wawrzeńczyk ◽  
Agnieszka Molendowska ◽  
Tomasz Juszczak

The European concrete standard EN 206 introduces the k-value concept as one of the three methods allowing the use of granulated blast furnace slag in the design of the freeze-thaw-resistant concrete mix. It is assumed that the freeze-thaw durability of the concrete, whose composition (w/c ratio) has been corrected by adopting a certain k-value, is the same as the freeze-thaw resistance of the reference concrete made with the cement containing no addition (CEM I). This article presents the results of freeze-thaw resistance analysis (modified with the ASTM C666A standard Class XF3) of 24 series of concretes made with a binder containing varied amounts of slag, with a w/b ratio ranging from 0.25 to 0.55. The aim of the study was to estimate the k-value as a parameter defined by the w/b ratio and the slag content in the binder. In this approach, the k-value is determined by trial and error in such a way that the deformation of the concrete specimens containing the slag corresponds to the deformation of the reference concrete. As shown by the analysis, the k-value decreases with increasing slag content in the binder.


2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Wonsuk Jung ◽  
Se-Jin Choi

This paper investigates the effect of the high-temperature curing methods on the compressive strength of concrete containing high volumes of ground granulated blast-furnace slag (GGBS). GGBS was used to replace Portland cement at a replacement ratio of 60% by binder mass. The high-temperature curing parameters used in this study were the delay period, temperature rise, peak temperature (PT), peak period, and temperature down. Test results demonstrate that the compressive strength of the samples with PTs of 65°C and 75°C was about 88% higher than that of the samples with a PT of 55°C after 1 day. According to this investigation, there might be optimum high-temperature curing conditions for preparing a concrete containing high volumes of GGBS, and incorporating GGBS into precast concrete mixes can be a very effective tool in increasing the applicability of this by-product.


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