Structure-property relation and Weibull analysis of calcium aluminate cement pastes

2017 ◽  
Vol 134 ◽  
pp. 9-17 ◽  
Author(s):  
John F. Zapata ◽  
Maryory Gomez ◽  
Henry A. Colorado
2003 ◽  
Vol 33 (11) ◽  
pp. 1801-1806 ◽  
Author(s):  
T Matusinović ◽  
J Šipušić ◽  
N Vrbos

2021 ◽  
Vol 129 (11) ◽  
pp. 669-675
Author(s):  
Zhongfeng XIA ◽  
Zhoufu WANG ◽  
Yan MA ◽  
Hao LIU ◽  
Xitang WANG

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4633
Author(s):  
Galyna Kotsay ◽  
Irmina Masztakowska

This paper discusses studies regarding the impact of fine-ground glass additives on the hydration and properties of alumina cement pastes and mortars. Fine-ground glass was added to pastes and mortars instead of high-alumina cement and calcium aluminate cement in quantities of 5% and 10%. The findings are inconclusive as to the impact of glass on the properties of tested alumina cement types. The effect produced via the addition of glass instead of cement depends on the type of alumina cement used. Adding fine-ground glass to high-alumina cement enhances the paste’s density while improving paste and mortar strength. Using the same additive for calcium aluminate cement reduces its density and strength. The addition of glass to high-alumina cement adversely affects its strength at higher temperatures.


2021 ◽  
Vol 1036 ◽  
pp. 247-254
Author(s):  
Zhong Ping Wang ◽  
Yu Ting Chen ◽  
Xiang Peng ◽  
Ling Lin Xu

Calcium aluminate cement (CAC) has excellent resistance to seawater erosion, but the mechanism remains to be explored. Effects of NaCl and CaCl2 on the hydration of CAC at 5, 20 and 40°C were investigated in this paper by X-ray diffraction(XRD), thermal analyzer(TG-DSC), scanning electron microscopy(SEM), acoustic and electroacoustic spectrometer. Results show that the varieties of chlorides have great impacts on the chloride binding ability, mechanical properties and microstructure of cement pastes at different temperatures. At 5°C and 20°C, the formation of C2AH8 is suppressed by chloride attack. Though the addition of NaCl promotes the formation of CAH10, CaCl2 leads to a denser microstructure and the improvement in compressive strength. At 40°C, C2AH8 disappears by chloride attack, while C3AH6 and Friedel’s salt increase. Comparing with the attack of CaCl2, NaCl contributes to the formation of C3AH6. Therefore, it results in a the retraction in compressive strength, ascribing to a coarser structure. In addition, although NaCl is superior in chemical binding ability, CaCl2 has better physical adsorption ability which dominants the binding process, and thus leading to greater amount of bonded chloride than that with NaCl. This research provides the oretical basis for the application of CAC in marine environment.


2018 ◽  
Vol 30 (5) ◽  
pp. 195-203 ◽  
Author(s):  
Chaohua Jiang ◽  
Huiwen Yuan ◽  
Chunhua Lu ◽  
Zhongzi Xu ◽  
Duyou Lu

2020 ◽  
Author(s):  
John Zapata ◽  
Henry Colorado ◽  
Maryory G mez

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