Work

Mechanical response and damage evaluation of cement-stabilized crushed stone base roads under load and freeze-thaw coupling effects

Year: 2024

Type: article

Abstract: Cement stabilized crushed stone base material is widely used in pavement structures, but it is prone to damage under complex loads and freeze-thaw cycles, which can lead to pavement failure. Due to insufficient consideration of the behavior of the material under the coupling conditions of freeze-thaw and dynamic loads in engineering, there are deficiencies in the assessment of its freeze-thaw damage mechanism and fatigue life . Based on this, this article constructs a fully controlled load freeze-thaw test system suitable for simulating structures of cement stabilized crushed stone base, and based on this test system, the mechanical response of small-sized pavement structures under load freeze-thaw action is measured. The results indicate that compared to a single load, freeze-thaw cycles and load coupling accelerate the deterioration of pavement structures and produce greater deformation in the crushed stone base. Finally, the load freeze-thaw damage factor was constructed and introduced into the fatigue equation. The life prediction equation for freeze-thaw damage of cement stabilized crushed stone base structure was derived and established, providing a theoretical basis for guiding the engineering application of cement stabilized crushed stone base materials in cold regions.

Source: Construction and Building Materials

DOI: 10.1016/j.conbuildmat.2024.139741

Authors: Yiqi Wang, Yiqiu Tan, Meng Guo, Xinglong Wang

Institutions: Harbin Institute of Technology, Heilongjiang Institute of Technology, Beijing University of Technology

Language: English

Topic: Geotechnical and construction materials studies

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $4,080