Effect of rice husk ash on mechanical properties, fracture energy, brittleness and aging of calcium aluminate cement concrete

Structures ◽  
2022 ◽  
Vol 36 ◽  
pp. 140-152
Author(s):  
Amirmohamad Abolhasani ◽  
Bijan Samali ◽  
Mehdi Dehestani ◽  
Nicolas Ali Libre
Keyword(s):  
Mechanical Properties ◽  
Fracture Energy ◽  
Rice Husk ◽  
Calcium Aluminate ◽  
Rice Husk Ash ◽  
Calcium Aluminate Cement ◽  
Cement Concrete ◽  
Aluminate Cement

scholarly journals Physicochemical, Mineralogical, and Mechanical Properties of Calcium Aluminate Cement Concrete Exposed to Elevated Temperatures

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3855
Author(s):  
Amirmohamad Abolhasani ◽  
Bijan Samali ◽  
Fatemeh Aslani
Keyword(s):  
Temperature Rise ◽  
Calcium Aluminate ◽  
Elevated Temperatures ◽  
Ultrasonic Pulse Velocity ◽  
Pulse Velocity ◽  
Calcium Aluminate Cement ◽  
Cement Concrete ◽  
Sem Images ◽  
Strength Deterioration ◽  
Aluminate Cement

One commonly used cement type for thermal applications is CAC containing 38–40% alumina, although the postheated behavior of this cement subjected to elevated temperature has not been studied yet. Here, through extensive experimentation, the postheated mineralogical and physicochemical features of calcium aluminate cement concrete (CACC) were examined via DTA/TGA, X-ray diffraction (XRD), and scanning electron microscopy (SEM) imaging and the variation in the concrete physical features and the compressive strength deterioration with temperature rise were examined through ultrasonic pulse velocity (UPV) values. In addition, other mechanical features that were addressed were the residual tensile strength and elastic modulus. According to the XRD test results, with the temperature rise, the dehydration of the C3AH6 structure occurred, which, in turn, led to the crystallization of the monocalcium dialuminate (CA2) and alumina (Al2O3) structures. The SEM images indicated specific variations in morphology that corresponded to concrete deterioration due to heat.

scholarly journals Evolution of thermo-mechanical properties of concrete with calcium aluminate cement and special aggregates for energy storage

2021 ◽  
Vol 141 ◽  
pp. 106323
Author(s):  
Marta Roig-Flores ◽  
Tamara Lucio-Martin ◽  
María Cruz Alonso ◽  
Luis Guerreiro
Keyword(s):  
Mechanical Properties ◽  
Energy Storage ◽  
Calcium Aluminate ◽  
Calcium Aluminate Cement ◽  
Aluminate Cement

Structural Changes in Refractory Calcium Aluminate Cement Concrete

2018 ◽  
Vol 59 (2) ◽  
pp. 151-155 ◽  
Author(s):  
Yu. R. Krivoborodov ◽  
S. V. Samchenko ◽  
T. V. Kuznetsova
Keyword(s):  
Calcium Aluminate ◽  
Structural Changes ◽  
Calcium Aluminate Cement ◽  
Cement Concrete ◽  
Aluminate Cement

Evaluation of a Procedure for Determining the Converted Strength of Calcium Aluminate Cement Concrete

2018 ◽  
Vol 46 (4) ◽  
pp. 20160277 ◽  
Author(s):  
Matthew P. Adams ◽  
Racheal D. Lute ◽  
Edward G. Moffatt ◽  
Jason H. Ideker
Keyword(s):  
Calcium Aluminate ◽  
Calcium Aluminate Cement ◽  
Cement Concrete ◽  
Aluminate Cement
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