The System Potassium Sulfate-Sodium Sulfate-Magnesium Sulfate-Water at 35°

1947 ◽  
Vol 69 (8) ◽  
pp. 2033-2036 ◽  
Author(s):  
N. S. Bayliss ◽  
A. R. H. Cole ◽  
W. E. Ewers ◽  
N. K. Jones
1918 ◽  
Vol 28 (5) ◽  
pp. 551-558 ◽  
Author(s):  
Martha Wollstein ◽  
S. J. Meltzer

Intrabronchial injections of isotonic as well as of hypotonic solutions of sodium chloride or even of distilled water cause no pulmonary lesions. Intrabronchial injections of mercuric chloride even in a dilution of 1:10,000 cause a marked pulmonary lesion. The lesion is not of an inflammatory character; it consists of congestion, formation of thrombi, and hemorrhage. Intrabronchial injections of hypertonic solutions of sodium chloride as well as of sodium sulfate cause, in most instances, no lesions whatsoever. In a smaller number of cases in which moderate lesions were present they may have been due either to a previous infection (distemper) or to some predisposing cause (winter months). Intrabronchial injection of magnesium salts apparently tends to cause moderate pulmonary lesions (bronchopneumonia). This seems especially true of magnesium sulfate.


2019 ◽  
Vol 228 ◽  
pp. 116775 ◽  
Author(s):  
Zhiqiang Yang ◽  
Jinyang Jiang ◽  
Xing Jiang ◽  
Song Mu ◽  
Meng Wu ◽  
...  

2018 ◽  
Vol 199 ◽  
pp. 02006 ◽  
Author(s):  
John Kamau ◽  
Ash Ahmed ◽  
Killian Ngong

Durability of concrete is defined as its ability to resist deterioration after exposure to the environment of its use. This work investigates the performance of Rice Husk Ash (RHA) concrete in sodium sulfate (Na2SO4), magnesium sulfate (MgSO4) and combined Na2SO4 and MgSO4 solutions. Concrete bar specimens and cubes were prepared for expansion and strength deterioration tests respectively using RHA replacement at the 7.5% replacement by volume, which had achieved the highest compressive strength, as well as at the 30% replacement by volume, which was the highest replacement for the study. Strength deterioration tests were performed on the 7.5% replacement by the weight of cement. From the expansion test findings, it was concluded that at the 7.5% replacement, RHA could be used with an advantage over 100% cement concrete in MgSO4 environments, whereas at the 30% replacement, RHA could be used with an advantage over 100% cement concrete in both the Na2SO4 and mixed sulfate environments. RHA was also found to be more effective in resisting surface deterioration in all the sulfate solutions. The RHA specimens also exhibited superior strength deterioration resistance in comparison to the 100% cement specimens.


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