Modelling strategies for the study of crack self-sealing in mortar with superabsorbent polymers

More Info
expand_more

Abstract

In this work, a numerical model is presented to predict the self-sealing effect provided by superabsorbent polymers (SAP) admixtures in mortar. Firstly, the use of a law of absorption kinetics for SAP embedded in a cementitious matrix was validated with experimental results available in literature. Secondly, two extreme strategies are considered for the swelling of SAP in the crack regarding the variation in its deformation capacity under constraint. The results show the appropriateness of the SAP absorption law and explain the mechanisms of water absorption of mortar with such admixtures. Furthermore, the influence of the deformation capacity of SAP on the water penetration in cracks is studied parametrically.

Files

RILEM_PRO127_Modelling_strateg... (pdf)
(pdf | 1.37 Mb)
- Embargo expired in 01-03-2019
Unknown license