Advanced search
1 file | 3.75 MB Add to list

Discussing different approaches for the time-zero as start for autogenous shrinkage in cement pastes containing superabsorbent polymers

(2019) MATERIALS. 12(18).
Author
Organization
Abstract
Many studies have already been published concerning autogenous shrinkage in cementitious materials. Still, no consensus can be found in the literature regarding the determination of the time-zero to initiate the recording of autogenous shrinkage. With internal curing agents, a correct evaluation of their efficiency depends on an appropriate choice of the time-zero. This study investigates different approaches to estimate the time-zero for cement paste mixtures with and without superabsorbent polymers as internal curing agents. The initial and final setting times were determined by an electronic Vicat and ultrasonic pulse velocity measurements (UPV); the transition point between the fluid and solid state was determined from the autogenous strain curve; the development of the capillary pressure was also studied. The choice of time-zero before the transition point led to higher values of shrinkage strain that should not be taken into account for autogenous shrinkage. A negligible difference was found between the strains when the final setting time and the transition point were taken as time-zero. Considering the artefacts and practical issues involving the different methods, the use of the transition point from the autogenous strain curve is the most suitable technique for determining the time-zero.
Keywords
autogenous shrinkage, time-zero, superabsorbent polymers, SETTING PROCESS, DEFORMATION, CONCRETE

Downloads

  • materials-12-02962.pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 3.75 MB

Citation

Please use this url to cite or link to this publication:

MLA
Tenório Filho, José Roberto, et al. “Discussing Different Approaches for the Time-Zero as Start for Autogenous Shrinkage in Cement Pastes Containing Superabsorbent Polymers.” MATERIALS, vol. 12, no. 18, 2019.
APA
Tenório Filho, J. R., Pereira Gomes de Araújo, M. A., Snoeck, D., & De Belie, N. (2019). Discussing different approaches for the time-zero as start for autogenous shrinkage in cement pastes containing superabsorbent polymers. MATERIALS, 12(18).
Chicago author-date
Tenório Filho, José Roberto, Maria Adelaide Pereira Gomes de Araújo, Didier Snoeck, and Nele De Belie. 2019. “Discussing Different Approaches for the Time-Zero as Start for Autogenous Shrinkage in Cement Pastes Containing Superabsorbent Polymers.” MATERIALS 12 (18).
Chicago author-date (all authors)
Tenório Filho, José Roberto, Maria Adelaide Pereira Gomes de Araújo, Didier Snoeck, and Nele De Belie. 2019. “Discussing Different Approaches for the Time-Zero as Start for Autogenous Shrinkage in Cement Pastes Containing Superabsorbent Polymers.” MATERIALS 12 (18).
Vancouver
1.
Tenório Filho JR, Pereira Gomes de Araújo MA, Snoeck D, De Belie N. Discussing different approaches for the time-zero as start for autogenous shrinkage in cement pastes containing superabsorbent polymers. MATERIALS. 2019;12(18).
IEEE
[1]
J. R. Tenório Filho, M. A. Pereira Gomes de Araújo, D. Snoeck, and N. De Belie, “Discussing different approaches for the time-zero as start for autogenous shrinkage in cement pastes containing superabsorbent polymers,” MATERIALS, vol. 12, no. 18, 2019.
@article{8627976,
  abstract     = {Many studies have already been published concerning autogenous shrinkage in cementitious materials. Still, no consensus can be found in the literature regarding the determination of the time-zero to initiate the recording of autogenous shrinkage. With internal curing agents, a correct evaluation of their efficiency depends on an appropriate choice of the time-zero. This study investigates different approaches to estimate the time-zero for cement paste mixtures with and without superabsorbent polymers as internal curing agents. The initial and final setting times were determined by an electronic Vicat and ultrasonic pulse velocity measurements (UPV); the transition point between the fluid and solid state was determined from the autogenous strain curve; the development of the capillary pressure was also studied. The choice of time-zero before the transition point led to higher values of shrinkage strain that should not be taken into account for autogenous shrinkage. A negligible difference was found between the strains when the final setting time and the transition point were taken as time-zero. Considering the artefacts and practical issues involving the different methods, the use of the transition point from the autogenous strain curve is the most suitable technique for determining the time-zero.},
  articleno    = {2962},
  author       = {Tenório Filho, José Roberto and Pereira Gomes de Araújo, Maria Adelaide and Snoeck, Didier and De Belie, Nele},
  issn         = {1996-1944},
  journal      = {MATERIALS},
  keywords     = {autogenous shrinkage,time-zero,superabsorbent polymers,SETTING PROCESS,DEFORMATION,CONCRETE},
  language     = {eng},
  number       = {18},
  pages        = {15},
  title        = {Discussing different approaches for the time-zero as start for autogenous shrinkage in cement pastes containing superabsorbent polymers},
  url          = {http://dx.doi.org/10.3390/ma12182962},
  volume       = {12},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: