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Position: Home > Articles > Study on Cryogenic Mechanical Properties of Asphalt Concrete Journal of Shandong Agricultural University(Natural Science Edition) 2019,50 (2) 277-280

沥青混凝土低温力学特性研究

作  者:
鲁艳蕊
单  位:
河南财政金融学院
关键词:
沥青;混凝土;低温力学
摘  要:
我国北方冬季时间长气温低,严重影响了沥青混凝土的铺设和使用.基于此,制备了沥青混凝土样品,测试了不同低温影响下样品的抗拉强度和抗弯强度,分析了低温影响下沥青混凝土抗拉强度和抗弯强度的变化规律.研究结果表明:随着温度的降低,沥青混凝土的劈裂抗拉强度出现了先升高后减小,破坏应变逐渐减小,破坏劲度模量逐渐增大;沥青混凝土的弯拉破坏强度在10~-10℃随温度的降低而增大,在-10~-30℃随温度的降低而减小.
译  名:
Study on Cryogenic Mechanical Properties of Asphalt Concrete
作  者:
LU Yan-rui;Henan Finance University;
关键词:
Asphalt;;concrete;;cryogenic mechanics
摘  要:
The long time and low temperature in winter in north China seriously affect the laying and use of asphalt concrete.Based on this, asphalt concrete samples were prepared. The tensile strength and bending strength of samples were tested under the influence of different low temperatures. The influence law of low temperatures on the tensile strength and bending strength of asphalt concrete was analyzed. The results show that: With the decrease of temperature, the splitting tensile strength of asphalt concrete increases first and then decreases, the failure strain gradually decreases, and the failure stiffness modulus gradually increases. Flexural fracture strength of asphalt concrete in 10 ~-10℃ increases with the decreasing of temperature, in-10 ~ 30 ℃ decreased with the decreasing of temperature.

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