沥青混凝土预埋碳纤维绳发热升温试验
发布时间：2018-07-27 15:09
【摘要】：为了研究预埋碳纤维绳(碳绳)发热对沥青混凝土表面温度变化的影响规律,进行了不同长度碳绳单元的发热升温试验,绘制了升温及降温曲线,拟合得到温度变化与时间的数学关系式,进行了功率及用电量分析。研究结果表明:随着时间的延长,试件表面温度有持续上升趋势,与环境温度相比,2.5m长碳绳发热单元15min升高了4℃;3.5m、4.5m、5.5m长碳绳发热单元30min分别升高了3.5℃、3.2℃、1.3℃;单元发热功率分别为498W/m2、292W/m2、186W/m2、119W/m2、89 W/m2;断电后试块表面降温过程非常缓慢,温度变化与通电时间有良好的数学相关性;碳绳发热性能良好,沥青混凝土中埋设碳绳能起到较好的发热升温效果。依据降雪带的分布,推荐了发热单元的选择方案及设计方法。
[Abstract]:In order to study the effect of heating of carbon fiber rope (carbon rope) on the surface temperature change of asphalt concrete, the heating test of carbon rope elements with different lengths was carried out, and the curves of heating and cooling were drawn. The mathematical relation between temperature change and time is obtained, and the power and power consumption are analyzed. The results show that the surface temperature of the specimen increases continuously with the prolongation of time. Compared with the ambient temperature, the 15min of the heating unit of 2.5 m long carbon rope is increased by 4 鈩，
本文编号：2148218
[Abstract]:In order to study the effect of heating of carbon fiber rope (carbon rope) on the surface temperature change of asphalt concrete, the heating test of carbon rope elements with different lengths was carried out, and the curves of heating and cooling were drawn. The mathematical relation between temperature change and time is obtained, and the power and power consumption are analyzed. The results show that the surface temperature of the specimen increases continuously with the prolongation of time. Compared with the ambient temperature, the 15min of the heating unit of 2.5 m long carbon rope is increased by 4 鈩，
本文编号：2148218
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