【摘要】：為了研究預(yù)埋碳纖維繩(碳繩)發(fā)熱對瀝青混凝土表面溫度變化的影響規(guī)律,進行了不同長度碳繩單元的發(fā)熱升溫試驗,繪制了升溫及降溫曲線,擬合得到溫度變化與時間的數(shù)學(xué)關(guān)系式,進行了功率及用電量分析。研究結(jié)果表明:隨著時間的延長,試件表面溫度有持續(xù)上升趨勢,與環(huán)境溫度相比,2.5m長碳繩發(fā)熱單元15min升高了4℃;3.5m、4.5m、5.5m長碳繩發(fā)熱單元30min分別升高了3.5℃、3.2℃、1.3℃;單元發(fā)熱功率分別為498W/m2、292W/m2、186W/m2、119W/m2、89 W/m2;斷電后試塊表面降溫過程非常緩慢,溫度變化與通電時間有良好的數(shù)學(xué)相關(guān)性;碳繩發(fā)熱性能良好,瀝青混凝土中埋設(shè)碳繩能起到較好的發(fā)熱升溫效果。依據(jù)降雪帶的分布,推薦了發(fā)熱單元的選擇方案及設(shè)計方法。
[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，

本文編號：2148218