Delayed Elastic Response of Aggregates in Concrete

Concrete’s long-term performance under sustained loads is critically influenced by time-dependent deformation, commonly known as creep. Traditional models primarily attribute creep to the viscoelastic behavior of cement paste, considering aggregates as purely elastic materials Which deforms instantly under external load and the deformation remains constant.However, recent research has revealed that the aggregates themselves exhibit a delayed elastic response. This paper provides a comprehensive review of the mechanisms, contributingfactors, and engineering implications of the delayed elastic behavior of aggregates in concrete. This work underscores the need to consider the delayed elastic response of aggregates in multi-scale modeling, structural design, and the development of new concrete materials for improved long-term performance.

کلیدواژه ها:

Aggregate ، Creep ، Concrete time-dependent deformation ، Long-term deformation ، Elastic response