Systematic Quality Control Systems of Cement by Using of Various Types of Calorimeter
This paper proposes the systematic quality control systems of cement by using of various types of calorimeter. This system is combined to apparatus for measurement of heat liberation at very early hydration, conduction calorimeter for early hydration of cement, sandwich type conduction calorimeter and adiabatic calorimeter for small samples. The very early hydration of cement is related to the fluidity of cement paste. The change of fluidity with elapsed time is related to the early hydration of cement contact with water for 60min. is based on the content of C3A. The new type apparatus was developed for measurement of very early hydration of cement. Conduction calorimeter was used widely to check the retardation or irregular setting of cement. Sandwich type conduction calorimeter was developed for timeinterval measurement of many samples. The evaluating test for adiabatic temperature rise in concrete is not adequate for daily quality control because it requires considerable labour. In order to establish a convenient method for the evaluation of adiabatic temperature rise using about 30 cm3 of mortar sample only, we produced an adiabatic calorimeter experimentally. This systematic control system for combination of various types of calorimeter is useful for the quality control of cement with various byproducts as raw materials.
calorimetry quality control very early hydration sandwich type calorimeter adiabatic calorimeter
Etsuo Sakai Hiroshi Sato Seiichi Hagiwara Eiji Marvyc Masaki Daimon
Department of Metallurgy and Ceramics Science, Graduate School of Engineering, Tokyo Institute of Te Tokyo Riko Co.,Ltd.(3-2-16,Kitamachi,Nishitokyo-shi,Tokyo,202-0003) UBE Industries,Ltd.,Cement & Construction Materials Company, Technical Development Center(l-6, Okino
国际会议
济南
英文
1439-1445
2010-05-09（万方平台首次上网日期，不代表论文的发表时间）