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首页> 外文期刊>IEEE sensors journal >Use of Tapered Optical Fiber Sensors in Study of the Hydration Process of Cement Paste
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Use of Tapered Optical Fiber Sensors in Study of the Hydration Process of Cement Paste

机译：锥形光纤传感器在水泥浆水化过程研究中的应用

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In this paper, the tapered multimode plastic optical fiber sensor is used for the experimental study of the early-age hydration process of cement paste. A high reactive power is mixed as a specimen, in which a tapered fiber sensor is embedded to measure the liberated heat (temperature). The sensor characteristics are determined and calibrated by an embedded thermocouple, which have a sensitivity of 0.0293 ${rm mV}/^{circ}{rm C}$ and resolution of ${pm}{rm 0.34}^{circ}{rm C}$. The experimental studies are carried out for the host specimen with different sizes, various water/cement (w/c) ratios, as well as different ambient temperatures. From the experimental results, the curing temperature and setting time are determined by monitoring the curing temperature curves as the curing progressed. The curing temperature rose with increasing mould sizes, increasing w/c ratio, and increasing ambient temperature. The setting time could be shortened by a smaller size of a specimen, lower w/c ratio, and higher ambient temperature.
机译：本文将锥形多模塑料光纤传感器用于水泥浆早期水化过程的实验研究。高无功功率作为样本被混合，其中嵌入了锥形纤维传感器以测量释放的热量（温度）。传感器特性由嵌入式热电偶确定和校准，该传感器的灵敏度为0.0293 <公式公式类型=“ inline”> $ {rm mV} / ^ {circ} {rm C} $ < / tex> 和 $ {pm} {rm 0.34} ^ {circ} {rm C} $ 。对具有不同尺寸，不同水/水泥（w / c）比以及不同环境温度的宿主标本进行了实验研究。根据实验结果，通过监测固化过程中的固化温度曲线来确定固化温度和固化时间。固化温度随模具尺寸的增加，w / c比的增加以及环境温度的升高而升高。较小的样品尺寸，较低的水灰比和较高的环境温度可以缩短凝固时间。

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