For producing calcium nitrite from limestone and studying acidity in the ca(NO3)2-HNO3-H2O System

2020 ◽  
Vol 9 (3) ◽  
pp. 169
Author(s):  
Ruzieva Zulfiya Togmatovna ◽  
Akhmedova Fazilat Ulashevna
Keyword(s):  
Calcium Nitrite

Synergistic effect on concrete corrosion control in sewer environment achieved by applying surface washing on calcium nitrite admixed concrete

2021 ◽  
Vol 302 ◽  
pp. 124184
Author(s):  
Xuan Li ◽  
Jagadeeshkumar Kulandaivelu ◽  
Liza O'Moore ◽  
Simeon Wilkie ◽  
Lucija Hanzic ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Corrosion Control ◽  
Concrete Corrosion ◽  
Calcium Nitrite

Effects of Nano-CaCO3 on the Compressive Strength and Microstructure of High Strength Concrete in Different Curing Temperature

2011 ◽  
Vol 121-126 ◽  
pp. 126-131 ◽  
Author(s):  
Qing Lei Xu ◽  
Tao Meng ◽  
Miao Zhou Huang
Keyword(s):  
Compressive Strength ◽  
Low Temperature ◽  
High Strength Concrete ◽  
High Strength ◽  
Curing Temperature ◽  
Test Results ◽  
Strength Concrete ◽  
Calcium Nitrite ◽  
Orientation Index ◽  
Early Strength

In this paper, effects of nano-CaCO3 on compressive strength and Microstructure of high strength concrete in standard curing temperature(21±1°C) and low curing temperature(6.5±1°C) was studied. In order to improve the early strength of the concrete in low temperature, the early strength agent calcium nitrite was added into. Test results indicated that 0.5% dosage of nano-CaCO3 could inhibit the effect of calcium nitrite as early strength agent, but 1% and 2% dosage of nano-CaCO3 could improve the strength of the concrete by 13% and 18% in standard curing temperature and by 17% and 14% in low curing temperature at the age of 3days. According to the XRD spectrum, with the dosage up to 1% to 2%, nano-CaCO3 can change the orientation index significantly, leading to the improvement of strength of concrete both in standard curing temperature and low curing temperature.

187. The thermal decomposition of calcium nitrite

1953 ◽  
pp. 907
Author(s):  
Trambaklal Mohanlal Oza ◽  
Vasantrai Trambaklal Oza
Keyword(s):  
Thermal Decomposition ◽  
Calcium Nitrite
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