Effect of steam curing condition on the strength gain of mortar containing calcium nitrite based accelerator admixture

Abdul Ahmad Malikyar, Yuhji Sudoh, Nozomi Nakajima and Shigeyuki Date
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Abdul Ahmad Malikyar: Civil Engineering Department, Tokai University, Kanagawa, Japan
Yuhji Sudoh: Basic Chemical Department, Nissan Chemical Industries, Ltd
Nozomi Nakajima: Civil Engineering Department, Tokai University, Kanagawa, Japan
Shigeyuki Date: Civil Engineering Department, Tokai University, Kanagawa, Japan

Journal of Advances in Technology and Engineering Research, 2017, vol. 3, issue 3, 63-68

Abstract: This study was carried out to investigate the effect of steam curing condition on the early and later age strength of mortar, which was added various dosages of Calcium Nitrite Based accelerator, the study was performed on the specimens which subjected to the three different pre-curing time and exposed to the two different keeping curing times at the 45C° steam curing temperature. High early strength cement was used in this research experiment. From the obtained result, it was observed, that the early (8, hour) strength of specimens exposed to the long keeping curing time (4.5, hour) is higher than the strength of specimens subjected to the short keeping curing time, (3hours). Adversely, it is obtained that by increasing the ages of specimens, the strength gain goes up for the specimens exposed to short keeping curing time (3,hour), compared to the strength of the specimens exposed to longer keeping curing time (4.5, hour). Moreover, the obtained result indicates that the higher early and the later ages strength of specimens was observed from the specimens which accompanied to the pre-curing cycle 90 minutes, compared to the strength of specimens, exposed to pre-curing cycle 30 and 150 minutes. For all cases the result showed that, by increasing the dosage of the accelerator admixture the strength increased at the early and later ages.

Keywords: Compressive Strength; Steam Curing; Mortar; Calcium Nitrite; Accelerator Admixture (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:apb:jaterr:2017:p:63-68

DOI: 10.20474/jater-3.3.1

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