scholarly journals Studies on Powdered Preparations. II. Studies on Tablet Disintegration of Calcium Carbonate by Thermal Analysis.

1959 ◽  
Vol 7 (3) ◽  
pp. 331-337 ◽  
Author(s):  
Hisashi Nogami ◽  
Jun Hasegawa ◽  
Yoshinobu Nakai
Keyword(s):  
Thermal Analysis ◽  
Calcium Carbonate ◽  
Tablet Disintegration

Evaluation of calcium carbonate in eggshells using thermal analysis

2019 ◽  
Vol 138 (4) ◽  
pp. 2751-2758 ◽  
Author(s):  
Matjaž Kristl ◽  
Sabina Jurak ◽  
Maksimilijan Brus ◽  
Vilma Sem ◽  
Janja Kristl
Keyword(s):  
Thermal Analysis ◽  
Calcium Carbonate

The Carbonation of Calcium-Silicate-Hydrate C-S-H in Cement Mortar Studied Using Thermal Analysis and Gas Pycnometer: Determination of the Quantity of Calcium Carbonate Produced and the Increase in Molar Volume

2014 ◽  
Vol 931-932 ◽  
pp. 411-415 ◽  
Author(s):  
Son Tung Pham ◽  
William Prince
Keyword(s):  
Thermal Analysis ◽  
Calcium Carbonate ◽  
Relative Humidity ◽  
Molar Volume ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Cement Mortar ◽  
Accelerated Carbonation ◽  
Carbonation Of Portlandite

The objective of this work was to examine the microstructural changes caused by the carbonation of normalised cement mortar. Samples were prepared and subjected to accelerated carbonation at 20°C, 65% relative humidity and 20% CO2 concentration. The main contributions of this study were: 1) a new way to determine separately the amount of calcium carbonate CaCO3 produced by the carbonation of portlandite Ca (OH)2 and that associated with the carbonation of calcium-silicate-hydrate C-S-H using only thermal analysis; 2) determination of the increase in the molar volume of the calcium-silicate-hydrate C-S-H due to carbonation using gas pycnometer, which indicated an increase of about 39 cm3 for 1 mole of C3S2H3 carbonated. The results indicated that the amount of CaCO3 produced by the carbonation of C-S-H is higher than that produced by the carbonation of portlandite.

Study of Chemical and Physical Characterization of the Natural Dolomite of Ain Mlila-Algeria

2021 ◽  
Vol 406 ◽  
pp. 481-491
Author(s):  
K. Abdellaoui ◽  
A. Boumaza ◽  
N. Kamoun
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Calcium Carbonate ◽  
Physical Characterization ◽  
Physical Chemical ◽  
Geological Conditions ◽  
Chemical Techniques ◽  
Eastern Algeria ◽  
Extrinsic Defects

Dolomite is one of the commonest minerals that abound in the formation of a number of geological conditions. And it is found in abundance in eastern Algeria, especially Ain Mlila-Wilaya of Oum El Bouaghi-Algeria. The analyzed sample of raw dolomite has been by various physical-chemical techniques. The constituents of these carbonates are Ca, Mg, C, O, Al, Si, Fe, Ba, F, and Sr, analysis by XRD, and Raman, show that in addition to CaMg(CO3)2, we may have calcium carbonate. The Photoluminescence analysis characterizes the intrinsic and extrinsic defects of this carbonate. Differential thermal analysis reveals the different transformations of this mineral during heating. Indeed several stages including the elimination of water, the departure of CO2, the formation of MgO, and finally the formation of CaO.

Thermal synthesis of sodium calcium carbonate—A potential thermal analysis standard

1971 ◽  
Vol 2 (4) ◽  
pp. 305-312 ◽  
Author(s):  
John Ward Smith ◽  
Donald R. Johnson ◽  
William A. Robb
Keyword(s):  
Thermal Analysis ◽  
Calcium Carbonate ◽  
Thermal Synthesis ◽  
Sodium Calcium
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