摘   要：页岩陶粒吸水返水作用对混凝土养护具有重要影响。通过对坍落度和抗压、抗折强度进行对比分析，确定不同砂率和水灰比对页岩陶粒混凝土工作性和强度的影响规律及页岩陶粒混凝土的破坏规律。结果表明，页岩陶粒混凝土的坍落度随砂率的增大而减小，确定满足路用要求的最佳砂率范围（未加减水剂）为35%～39%；页岩陶粒混凝土强度随龄期的变化符合一般规律，与普通混凝土不同的是，强度随水灰比的增大呈现出先增大后降低的变化规律，确定满足路用要求的最适宜水灰比范围为0.37～0.39；页岩陶粒混凝土破坏通常为陶粒断裂和水泥砂浆碎裂，两者协调下，才能充分发挥材料强度。

Abstract: Concrete curing is influenced by water absorption and desorption of shale ceramsite. In order to determine the influence law of shale ceramsite concrete workability and strength, and failure law affected by different sand rate and water-cement ratio, the slump, compressive strength and flexural strength of shale ceramsite concrete are compared and analyzed. The results show that the slump of shale ceramsite concrete decreases with the increase of sand rate. Determined to meet the best road performance of the sand rate range (not added water reducing agent) is 35%～39%. Shale ceramsite concrete strength increases with the increase of age growth, the same change rule as the normal concrete. However, at the beginning, with the increase of water cement ratio, concrete strength presents increased and then decreased. Determined to meet the best road performance of the water-cement ratio range is 0.37～0.39. The fracture of shale ceramsite concrete is usually ceramsite damage and cement mortar fracture, therefore, the strength of concrete is developed completely through the coordination of those two factors.