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首页> 外文期刊>The international journal of pavement engineering & asphalt technology >COHESION, FRACTURE AND BOND - UNDERSTANDING THE DATA FROM THE VIALIT COHESION PENDULUM TEST AND OTHER FRACTURE TESTS FROM AN ANALYSIS OF RHEOLOGICAL PROPERTIES
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COHESION, FRACTURE AND BOND - UNDERSTANDING THE DATA FROM THE VIALIT COHESION PENDULUM TEST AND OTHER FRACTURE TESTS FROM AN ANALYSIS OF RHEOLOGICAL PROPERTIES

机译：粘结性，断裂和粘结-通过流变特性分析，了解维利特粘结性摆锤试验和其他断裂试验的数据

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摘要

The Vialit Cohesion Pendulum has been used for many years in Europe as a tool for assessing modified asphalt binders with a particular emphasis on chip seal/surfacing dressing applications. The cohesion measured in this device has been considered as an indicator of quality of the base asphalt binder and subsequent polymer formulation. This test demonstrates a transition between brittle and ductile failure of binder systems. When a test of this kind is compared to other binder tests, it is possible to deduce the impact that the high rate of loading in the Vialit Cohesion Pendulum test has on the test results. Data have been developed on a series of SHRP core asphalt binders and these are compared to master curves developed with the same binders. A discussion will follow on how the fracture of asphalt binder and mixture is both rate and temperature dependent and that this parameter always needs that consideration to truly evaluate the meaning of test data. A test of this nature, while founded partly on an empirical data base of use, can be better explained and understood with consideration of the speed of loading and temperature effects that allows the translation of fracture temperatures at one condition to those at another. The results from this type of evaluation offer better understanding of criteria such as fatigue, fracture and bond of asphalt binders and mixtures.
机译：Vialit内聚力摆锤已在欧洲用作评估改性沥青粘合剂的工具多年，特别侧重于切屑密封/表面修整应用。在该装置中测得的内聚力已被认为是基础沥青粘合剂和随后的聚合物配方质量的指标。该测试证明了粘合剂体系在脆性和韧性破坏之间的过渡。将此类测试与其他粘合剂测试进行比较时，可以推断出Vialit内聚力摆锤测试中高加载速率对测试结果的影响。已经开发了一系列SHRP核心沥青粘合剂的数据，并将这些数据与使用相同粘合剂开发的主曲线进行了比较。接下来将讨论沥青粘合剂和混合物的断裂如何与速率和温度相关，并且该参数始终需要考虑这一因素才能真正评估测试数据的含义。这种性质的测试虽然部分建立在使用的经验数据库上，但考虑到加载速度和温度效应（可以将一种条件下的断裂温度转换为另一种条件下的温度），可以更好地解释和理解。此类评估的结果可更好地理解标准，例如疲劳，断裂和沥青结合料和混合物的粘结。

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