季冻区沥青路面灌缝胶工作性能试验

doi:10.13229/j.cnki.jdxbgxb.20240876

Abstract

Abstract:

This study builds on existing evaluation criteria by introducing additional indicators， including cone penetration ratio， compression elastic recovery rate， and low-temperature tensile strength， which are assessed through short-term and long-term aging tests. An evaluation model tailored to the performance of sealants in seasonally frozen asphalt pavements is developed using the entropy weight-TOPSIS method. The experimental results indicate the following： After short-term aging， the control standards for cone penetration ratio and compression elastic recovery rate are 90% and 30%， respectively， whereas after long-term aging， these standards decrease to 50% and 20%. The evaluation criteria for sealant viscosity are 1-3 Pa·s at 190 °C， with a grouting depth of 5 cm. The low-temperature tensile stress evaluation criteria for sealants after immersion are 0.06 MPa at -30 °C and 0.03 MPa at -20 °C， while the adhesion strength after freeze-thaw cycles is 0.03 MPa at -30 °C and 0.025 MPa at -20 °C. The entropy weight-TOPSIS method not only determines whether the sample meets qualification standards but also provides a comprehensive assessment of its quality across multiple indicators. These findings contribute to improving the application efficiency and durability evaluation of sealant materials， offering supplementary data for performance assessment and specification updates in cold regions.

Key words: seasonal freezing zone, asphalt pavement, grouting material, entropy weight TOPSIS, evaluating indicator

CLC Number:

U414

Wei WANG,Rong-sen HE,Zhi-guo CHEN,Jia-le SHI,Liang XU,Yan-nan SUN. Experiment on performance of asphalt pavement grouting adhesive in seasonal frozen zone[J].Journal of Jilin University(Engineering and Technology Edition), 2025, 55(10): 3228-3241.

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样本编号	样本A	样本B	样本C	样本D	样本E	样本F	样本G	样本H
成分	改性沥青
修补方式	加热
适用温度/℃	-30	-30	-30	-30	-20	-20	-20	-20
锥入度/0.1 mm	110.0~120.0	115.0~120.0	120.0~125.0	115.0~125.0	85.0~95.0	75.0~85.0	90.0~95.0	80.0~90.0
软化点/℃	86~90	80~88	85~95	90~95	87~92	85~90	92~98	88~94
压缩弹性恢复率/%	45~50	40~45	35~40	45~50	30~35	30~40	45~50	35~40
流动性/mm	1.5~2	0	0	1~1.5	0	0	0	0~0.5
适用规范	JT/T740-2015

	样本				JT/T 740要求
	A	B	C	D	JT/T 740要求
锥入度/0.1 mm	115.6	138.9	120.7	135.2	90~150
软化点/℃	84.4	87.8	82.5	80.7	≥80
流动度/mm	0.1	0.5	1.1	2.0	≤5
弹性恢复率/%	49.7	42.2	54.1	57.5	30~70
-30 ℃，150%，3次循环	满足	满足	满足	满足	满足

	样本				JT/T 740要求
	E	F	G	H	JT/T 740要求
锥入度/0.1 mm	99.6	102.2	88.0	84.2	70~110
软化点/℃	87.6	81.8	92.3	86.2	≥80
流动度/mm	1.2	0.0	0.1	0.5	≤5
弹性恢复率/%	32.5	33.9	47	35.4	30~70
-20 ℃，100%，3次循环	满足	满足	满足	满足	满足

评价指数	样本A	样本B	样本C	样本D	样本E	样本F	样本G	样本H
短期老化后的锥入度比/%	87.4	79.2	94.2	100	100	89.6	98.8	98.8
长期老化后的锥入度比/%	69.7	54..1	52.0	46.7	46.1	55.6	85.1	74.9
老化后软化点差值/℃	-3.1	-6.4	1.5	0	0	2.2	-9.1	0
短期老化后的压缩弹性恢复率/%	37.7	35.2	30.5	43.3	30.4	30.3	30.2	31.6
长期老化后的压缩弹性恢复率/%	69.20	93.9	100	51.01	90.5	99.7	46.0	76

	样本
	A	B	C	D	E	F	G	H
老化前流动度/mm	0.1	0.5	1.1	1.1	1.2	0	0	1.1
老化后流动度/mm	0	0	0.5	0	0.9	0	0	0

Experiment on performance of asphalt pavement grouting adhesive in seasonal frozen zone

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