Water reducing agent effects on the engineering performance of cement stabilized aggregates

作者：Hu, L.^*; Liu, Zh; Sha, A.

来源：Scientia Iranica, 2018, 25(5): 2404-2412.

DOI：10.24200/sci.2017.4213

• Cement Stabilized Aggregates (CSAs)
• Water Reducing Agents (WRAs)
• Mechanical behavior
• Vibration compaction method

Water Reducing Agents (WRAs) are usually utilized in cement concrete to reduce the water-cement ratio, increase mechanical strength, and improve the durability of concrete structures. As a kind of widely used construction materials in pavement structures, i.e., base or subbase courses, Cement Stabilized Aggregates (CSAs) have their own shortcomings, e.g., drying shrinkage at early ages. To evaluate the feasibility of water reducing agent in cement stabilized aggregates, and its effects on engineering performance, six groups of cement stabilized aggregates were prepared (water reducing content = 0, 0.5, 1.0, 1.5, 2.0, and 2.5 wt.%). Engineering performances including density-water relationship, Unconfined Compressive Strength (UCS), Tensile Splitting Strength (TSS), Compressive Resilience Modulus (CR3.4), and Drying Shrinkage Strain (DSS) were measured. The results indicate that water reducing agents used in this study can significantly benefit the engineering performances of cement stabilized aggregates. The function of water reducing agent in cement stabilized aggregates is summarized in this paper, which would be beneficial to guide the water reducing agent utilization in cement stabilized aggregates.

• 出版日期2018-9
• 单位长安大学