本报告介绍了重复荷载的实验室结果，这些重复荷载用于评估骨料互锁作为路面接缝处的荷载传递机制。试验旨在研究骨料尺寸、硬度和接缝开裂时的龄期对荷载传递效率的影响。结果表明，大骨料有利于维持荷载传递，尤其是对于较大的接缝开口。增加骨料硬度也是有益的。此外，接缝开裂时的混凝土龄期也很显著。早期开裂比后期开裂导致更多骨料拉拔，从而导致更多骨料断裂。总拉拔提供了更好的荷载传递。

This report presents laboratory results from repetitive loads made to evaluate aggregate interlock as a load transfer mechanism at pavement joints. Tests were made to study the influence of aggregate size, hardness, and age at time of joint cracking on load transfer effectiveness. Results indicated that large aggregates were beneficial in maintaining load transfer, especially for larger joint openings. Increasing aggregate hardness was also beneficial. In addition, age of concrete at the time of joint cracking was significant. Early cracking resulted in more aggregate pullouts than later cracking, which resulted in more aggregate fracture. Aggregate pullouts provided better load transfer.