Print Email Facebook Twitter Restraining effect of aggregates on autogenous shrinkage in cement mortar and concrete Title Restraining effect of aggregates on autogenous shrinkage in cement mortar and concrete Author Lu, T. (TU Delft Materials and Environment; Southwest Petroleum University) Li, Z. (TU Delft Materials and Environment) Huang, H. (TU Delft Materials and Environment) Date 2021 Abstract Shrinkage-induced cracking can impair the durability of concrete structures. In the past few decades, this topic has drawn more and more attention. Shrinkage of mortar and concrete is actually the result of the interaction between the shrinking cement paste and the non-shrinking aggregates. In recent years, different models that consider the restraining effect of aggregates, i.e. Series model and Hobbs’ model, have been proposed to predict the autogenous shrinkage of mortar and concrete. However, in these models both aggregate particles and cement paste matrix are considered as elastic materials. In fact, cement paste is not ideally elastic. Creep also plays an important role in autogenous shrinkage of mortar and concrete. In this paper an extended Pickett model, which takes the effect of creep into consideration, is proposed. The autogenous shrinkage of CEM I and CEM III/B cement mortar and concrete is simulated by using this model and compared with the experimental results to evaluate the accuracy of the predictions. The results show that the extended Pickett model can well predict the autogenous shrinkage of mortar and concrete. Subject Autogenous shrinkageConcreteCreepMortarRestraining effect To reference this document use: http://resolver.tudelft.nl/uuid:1bb39a4e-814b-4a6c-adf1-6030f0c5951c DOI https://doi.org/10.1016/j.conbuildmat.2021.123166 ISSN 0950-0618 Source Construction and Building Materials, 289, 1-18 Part of collection Institutional Repository Document type journal article Rights © 2021 T. Lu, Z. Li, H. Huang Files PDF 1_s2.0_S0950061821009260_main.pdf 9.21 MB Close viewer /islandora/object/uuid:1bb39a4e-814b-4a6c-adf1-6030f0c5951c/datastream/OBJ/view