The Effect of Crystalline Waterproofing Admixtures on the Self-Healing and Permeability of Concrete.

ABSTRACT: This paper investigates the effectiveness of a specific crystalline waterproofing admixture (CWA) in concrete as a function of a water-binder ratio. Four concrete mixes with and without CWA were prepared; two of them with a water-binder ratio of 0.45 and two of them with a water-binder ratio of 0.55. Water permeability and compressive strength were tested on hardened concrete specimens and self-healing of cracks over time was observed. Cement paste and CWA paste were prepared to clarify the results obtained on the concrete specimens. SEM and EDS and XRD and FTIR were performed on the hardened pastes to explain the mechanism of CWA working. The results show that the addition of CWA had no significant effect on the compressive strength of the concrete, but reduced the water penetration depth

SUBMITTER: Gojevic A 

PROVIDER: S-EPMC8069652 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature