Weak interface strong skeleton shrinkage resistant mix design for large cement stabilized base.

Authors

Naitian Zhang, Zihan Yan, Hailin Wang, Dong Tang, Guozhi Zheng, Lianxia Ma, Yinbo Zhang

Published in

iScience. Volume 29. Issue 9. Pages 117347. Sep 18, 2026. Epub Sep 03, 2026.

Abstract

Semi-rigid base asphalt pavements suffer from reflective cracking caused by shrinkage of cement-stabilized materials. This study presents a "weak-interface, strong-skeleton" design for Filling-Type Large-Particle-Size Cement-Stabilized Crushed Stone (F-LSBC) using 19-26.5 mm coarse aggregates and fine aggregates below 2.36 mm. Through compaction-filling tests, mechanical strength evaluations, fatigue testing, and drying shrinkage measurements, we determined the optimal skeleton void ratio (∼43%), filler-to-coarse aggregate mass ratio (0.30), and cement dosage (5.27%). Although F-LSBC exhibits lower mechanical strength than conventional cement-stabilized macadam, it reduces cumulative drying shrinkage strain to 81% and the average shrinkage coefficient to 87% of control values. This design provides a practical, construction-friendly approach for crack-resistant pavement bases, offering a balanced trade-off between structural strength and shrinkage control for high-grade highway applications.

PMID:
42733915
Bibliographic data and abstract were imported from PubMed on 14 Sep 2026.

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