掺粉煤灰可显著减少水泥稳定碎石的裂缝

张基成

(中国矿业大学)

摘要:通过大量的室内试验，包括无侧限抗压强度、劈裂抗拉强度、抗折强度、干缩性能、温缩性能等试验，分析研究了掺加粉煤灰水泥稳定碎石的抗裂性能；经过试验路及实践推广应用,提出了各级公路水泥稳定碎石掺加粉煤灰组成比例的推荐值。

关键词: 粉煤灰  水泥稳定碎石  裂缝

The Crack of Cement Stabilized Crushed Stone Decreases Remarkably by Adulterating Fly-ash

Zhang Ji-cheng

Abstract: Based on many tests indoor, including unconfined compression strength, split tensile strength, bend strength, the dry-shrinking property and the temperature-shrinking property, this paper studies crack resistance property of cement stabilized macadam by adulterating fly-ash. .  The recommended values of design parameter of Cement stabilized macadam by adulterating fly-ash are given，according trial section and propagating in practicing .

Key words: Fly-ash ; Cement stabilized Crushed Stone ; Crack