Print Email Facebook Twitter Research on Design and Performance of Self-Compacting Cement Emulsified Bitumen Mixture (CEBM) Title Research on Design and Performance of Self-Compacting Cement Emulsified Bitumen Mixture (CEBM) Author Yi, Jinming (Wuhan Institute of Technology; Poly Changda Overseas Engineering Co.) Feng, Jianlin (Wuhan Institute of Technology) Li, Yuanyuan (Wuhan Institute of Technology) Bai, Tao (Wuhan Institute of Technology) Chen, Anqi (Wuhan University of Technology) Gao, Y. (TU Delft Pavement Engineering) Wu, Fan (Wuhan Institute of Technology) Wu, Shaopeng (Wuhan University of Technology) Liu, Quantao (Wuhan University of Technology) Li, Chuangmin (Changsha University of Science and Technology) Date 2022 Abstract To meet the needs of the road industry for maintenance operations, a new cement emulsified bitumen mixture (CEBM) with early-strength, self-compacting, and room-temperature construction characteristics was designed. The strength formation mechanism of CEBM was revealed with a scanning electron microscope (SEM) and the surface free energy (SFE) theory. The mechanical properties and road performance of the CEBM were investigated extensively. The results show that before the demulsification of emulsified bitumen, the SFE of the bitumen–aggregate–water three-phase system was reduced due to the replacement of the bitumen–aggregate interface with water. The adhesion work between the emulsified bitumen and the aggregate is negative, which means the adhesion between the emulsified bitumen and the aggregate will not occur spontaneously due to the existence of water. The liquid emulsified bitumen improves the workability of the mixture and ensures that the mixture can be evenly mixed and self-compacted. After demulsification, the work of adhesion between the residual bitumen and the aggregate is positive, which means residual bitumen and aggregate can bond spontaneously. In addition, the hydration products of cement and aggregate form a skeleton, and the emulsified bitumen film wraps and bonds the cement and aggregate together, creating strength. The emulsified bitumen, cement content, and curing conditions have significant effects on the stability of CEBM. The recommended dosage of emulsified bitumen and cement is 8% and 8–10%, respectively. This material integrates the hardening effect of cement and the viscoelastic performance of bitumen and has good workability, mechanical properties, and road performance. Therefore, the CEBM is technically feasible for application to bitumen pavement. Subject bitumen/cement composite mixtureearly-strengthmixture performanceself-compactedstrength formation mechanism To reference this document use: http://resolver.tudelft.nl/uuid:1977ade0-f41e-4c8f-a22c-b77f96a94d55 DOI https://doi.org/10.3390/ma15144840 ISSN 1996-1944 Source Materials, 15 (14) Part of collection Institutional Repository Document type journal article Rights © 2022 Jinming Yi, Jianlin Feng, Yuanyuan Li, Tao Bai, Anqi Chen, Y. Gao, Fan Wu, Shaopeng Wu, Quantao Liu, Chuangmin Li Files PDF materials_15_04840.pdf 5.74 MB Close viewer /islandora/object/uuid:1977ade0-f41e-4c8f-a22c-b77f96a94d55/datastream/OBJ/view