U-PAVE 10超薄铺装黏层不黏轮乳化沥青用量优化研究

Research on Optimization of Non-stick Wheel Emulsified Asphalt Dosage in U-PAVE 10 Ultra-Thin Pavement Adhesive Layer

摘要:

针对U-PAVE 10超薄铺装层黏层不黏轮乳化沥青用量开展研究，以解决超薄铺装层间黏结不良导致的推移、开裂等问题。通过乳化沥青试验提出了不黏轮乳化沥青的技术指标，同时制备黏层不同用量的不黏轮乳化沥青复合车辙板进行密度试验和低温小梁弯曲试验以确定最佳用量范围。试验结果表明：不黏轮乳化沥青适用于常规摊铺机摊铺厚度≤2.5 cm的U-PAVE 10混合料；而且当不黏轮乳化沥青用量为0.5~0.7 L/m2时，其混合料压实度最好，低温弯曲应变最优，为U-PAVE 10超薄铺装在工程应用时黏层不黏轮乳化沥青用量的选择提供了有效依据。

Abstract:

The research is conducted on the dosage of non-stick wheel emulsified asphalt in the adhesion layer of U-PAVE 10 ultra-thin pavement layers to solve problems such as pushing and cracking caused by poor adhesion between ultra-thin pavement layers. The technical indicators of non-stick wheel emulsified asphalt are proposed through emulsified asphalt tests. At the same time, non-stick wheel emulsified asphalt composite ruts with different dosages of adhesive layers are prepared for density tests and low-temperature small beam bending tests to determine the optimal dosage range. The test results show that non-stick wheel emulsified asphalt is suitable for paving U-PAVE 10 mixtures with a thickness ≤ 2.5 cm using conventional pavers. And when the dosage of non-stick wheel emulsified asphalt ranges from 0.5 to 0.7 L/m2, the compaction degree of the mixture is optimal, and the low-temperature bending strain is the best, which provides an effective basis for the selection of non-stick wheel emulsified asphalt dosage for the adhesive layer in the engineering application of U-PAVE 10 ultra-thin pavement.