地源热泵融雪化冰沥青混凝土冻融劈裂实验研究

Experiment Research on Freeze-thaw Splitting of Asphalt Concrete of Deicing and Snow Melting Based on Ground-Source Heat Pump

地源热泵融雪化冰技术具有许多优越性,有的学者指出道路融雪化冰会导致沥青路面水损害加剧。通过设计一套试验方案来评价利用地热源泵融雪化冰后路面的水损坏程度。地源热泵加热融化的试件的劈裂抗拉强度为0.72MPa,而根据试验规程测得的劈裂抗拉强度为0.68MPa,结果表明地源热泵融雪化冰技术不仅不会增加沥青路面的水损害,还会提高路面抗水损害性能。

The technology of deicing and snow melting based on ground-source heat pump has many advantages, but some scholars pointed out that water damage was intensified because of deicing and snow melting. An experimental program was designed to estimate the degree of water damage of deicing and snow melting based on ground-source heat pump. The tensile splitting strength based on ground-source heat pump is 0.72 MPa,but the tensile splitting strength of based on test procedures is 0.68 MPa. The results showed that deicing and snow melting technology based on ground-source heat pump not only will increase the water damage of asphalt pavement, but also will improve the capability of resistance to water.