Thermal and hygric properties of Portland cement mortar after high-temperature exposure combined with compressive stress

2003 ◽  
Vol 33 (9) ◽  
pp. 1347-1355 ◽  
Author(s):  
R. Černý ◽  
M. Totová ◽  
J. Poděbradská ◽  
J. Toman ◽  
J. Drchalová ◽  
...  
Keyword(s):  
High Temperature ◽  
Portland Cement ◽  
Compressive Stress ◽  
Cement Mortar ◽  
High Temperature Exposure ◽  
Hygric Properties ◽  
Temperature Exposure

The effect of compressive stress on thermal and hygric properties of Portland cement mortar in wide temperature and moisture ranges

2000 ◽  
Vol 30 (8) ◽  
pp. 1267-1276 ◽  
Author(s):  
R C̆erný ◽  
J Madĕra ◽  
J Podĕbradská ◽  
J Toman ◽  
J Drchalová ◽  
...  
Keyword(s):  
Portland Cement ◽  
Compressive Stress ◽  
Cement Mortar ◽  
Hygric Properties

Performance of Concrete at Sustained High Temperature in Material Applications

2012 ◽  
Vol 578 ◽  
pp. 150-153
Author(s):  
Hong Zhu Quan
Keyword(s):  
Weight Loss ◽  
Compressive Strength ◽  
High Temperature ◽  
Portland Cement ◽  
Test Results ◽  
Test Procedures ◽  
High Temperature Exposure ◽  
Concrete Properties ◽  
Early Strength ◽  
Temperature Exposure

The effects of sustained high temperature on concrete properties are discussed in this paper. In this experiment, concrete with 6 types of cement were tested after high temperature exposure. Although, test procedures were the same as past literature, test results showed different tendency. The temperature of 50°C at which compressive strength was minimal were found for concrete with high-early strength and medium-heat portland cement, which concrete with other cements showed no change up to 110°C. Relationship between weight loss and compressive strength differed from past literature.

Creep Properties and Interfacial Microstructure of SiC Whisker Reinforced Si3N4

1989 ◽  
Vol 170 ◽  
Author(s):  
Håkan A. Swan ◽  
Colette O'meara
Keyword(s):  
High Temperature ◽  
Creep Resistance ◽  
Interfacial Microstructure ◽  
Deformation Mechanisms ◽  
Amorphous Films ◽  
Creep Tests ◽  
Creep Properties ◽  
High Temperature Exposure ◽  
Temperature Exposure

AbstractPreliminary creep tests were performed on SiC whisker reinforced and matrix Si3N4 material fabricated by the NPS technique. The material was extensively crystallised in the as received material, leaving only thin amorphous films surrounding the grains. No improvement in the creep resistance could be detected for the whisker reinforced material. The deformation mechanisms were found to be that of cavitation in the form of microcracks, predominantly at the whisker/matrix interfaces, and the formation of larger cracks. Extensive oxidation of the samples, as a result of high temperature exposure to air, was observed for the materials tested at 1375°C.

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