Advanced search
1 file | 417.39 KB Add to list

Use of superabsorbent polymers to mitigate autogenous shrinkage in ultra-high performance concrete

Author
Organization
Abstract
Ultra-high performance concrete (UHPC) with low w/c-ratio is very prone to the formation of cracks due to autogenous shrinkage. These cracks can lead to a decreased durability of the concrete, resulting in higher maintenance and/or repair costs in the future. Superabsorbent polymers (SAPs) can be added to cementitious materials to provide internal curing and as a result reduce or even mitigate this autogenous shrinkage. In this paper, two different types of SAPs were added to cement paste to see their influence on mitigating autogenous shrinkage. One SAP is a commercially available SAP whereas the other SAP is especially developed within the framework of the LORCENIS project by the company ChemStream, with the aim to mitigate autogenous shrinkage and induce self-healing of cracks. The SAPs from ChemStream were based on a copolymerization of sodium vinyl sulfonate (SVS) with 2-acryloylamino-2-methyl-propane-1-sulfonate (NaAMPS) and contained 1.0 mol% N,N’-methylenebisacrylamide (MBA) with respect to the monomer as cross-linker. The commercial SAP from BASF was based on poly(acrylamide-co-acrylic acid). In case SAPs were used, an additional fixed amount of water was added to mitigate autogenous shrinkage. The amount of SAPs used was determined based on their swelling capacity in cement filtrate and in order to obtain the same workability as the reference mixture. The amount of SAPs needed was in the range of 0.2-0.26 m% of the cement weight. To see whether the size of the SAPs plays a role in the efficiency of mitigating autogenous shrinkage, two average particle sizes, namely 40 and 100 µm, were tested. With the used amount of SAPs, a reduction or even complete counteraction of autogenous shrinkage was observed for the cement pastes.
Keywords
Superabsorbent polymers (SAPs), autogenous shrinkage, corrugated tubes, internal curing

Downloads

  • (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 417.39 KB

Citation

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

MLA
De Meyst, Laurence, et al. “Use of Superabsorbent Polymers to Mitigate Autogenous Shrinkage in Ultra-High Performance Concrete.” Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, Self-Responsiveness and Nano-Additions, edited by Maria Adelaide Pereira Gomes de Araújo et al., Magnel Laboratory for Concrete Research, 2019, pp. 100–05.
APA
De Meyst, L., Debbaut, B., Pereira Gomes de Araújo, M. A., Van Tittelboom, K., Van Vlierberghe, S., & De Belie, N. (2019). Use of superabsorbent polymers to mitigate autogenous shrinkage in ultra-high performance concrete. In M. A. Pereira Gomes de Araújo, N. De Belie, & K. Van Tittelboom (Eds.), Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, self-responsiveness and nano-additions (pp. 100–105). Ghent, Belgium: Magnel Laboratory for Concrete Research.
Chicago author-date
De Meyst, Laurence, Brenda Debbaut, Maria Adelaide Pereira Gomes de Araújo, Kim Van Tittelboom, Sandra Van Vlierberghe, and Nele De Belie. 2019. “Use of Superabsorbent Polymers to Mitigate Autogenous Shrinkage in Ultra-High Performance Concrete.” In Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, Self-Responsiveness and Nano-Additions, edited by Maria Adelaide Pereira Gomes de Araújo, Nele De Belie, and Kim Van Tittelboom, 100–105. Magnel Laboratory for Concrete Research.
Chicago author-date (all authors)
De Meyst, Laurence, Brenda Debbaut, Maria Adelaide Pereira Gomes de Araújo, Kim Van Tittelboom, Sandra Van Vlierberghe, and Nele De Belie. 2019. “Use of Superabsorbent Polymers to Mitigate Autogenous Shrinkage in Ultra-High Performance Concrete.” In Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, Self-Responsiveness and Nano-Additions, ed by. Maria Adelaide Pereira Gomes de Araújo, Nele De Belie, and Kim Van Tittelboom, 100–105. Magnel Laboratory for Concrete Research.
Vancouver
1.
De Meyst L, Debbaut B, Pereira Gomes de Araújo MA, Van Tittelboom K, Van Vlierberghe S, De Belie N. Use of superabsorbent polymers to mitigate autogenous shrinkage in ultra-high performance concrete. In: Pereira Gomes de Araújo MA, De Belie N, Van Tittelboom K, editors. Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, self-responsiveness and nano-additions. Magnel Laboratory for Concrete Research; 2019. p. 100–5.
IEEE
[1]
L. De Meyst, B. Debbaut, M. A. Pereira Gomes de Araújo, K. Van Tittelboom, S. Van Vlierberghe, and N. De Belie, “Use of superabsorbent polymers to mitigate autogenous shrinkage in ultra-high performance concrete,” in Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, self-responsiveness and nano-additions, Ghent, Belgium, 2019, pp. 100–105.
@inproceedings{8661387,
  abstract     = {Ultra-high performance concrete (UHPC) with low w/c-ratio is very prone to the formation of cracks due to autogenous shrinkage. These cracks can lead to a decreased durability of the concrete, resulting in higher maintenance and/or repair costs in the future. Superabsorbent polymers (SAPs) can be added to cementitious materials to provide internal curing and as a result reduce or even mitigate this autogenous shrinkage. In this paper, two different types of SAPs were added to cement paste to see their influence on mitigating autogenous shrinkage. One SAP is a commercially available SAP whereas the other SAP is especially developed within the framework of the LORCENIS project by the company ChemStream, with the aim to mitigate autogenous shrinkage and induce self-healing of cracks. The SAPs from ChemStream were based on a copolymerization of sodium vinyl sulfonate (SVS) with 2-acryloylamino-2-methyl-propane-1-sulfonate (NaAMPS) and contained 1.0 mol% N,N’-methylenebisacrylamide (MBA) with respect to the monomer as cross-linker. The commercial SAP from BASF was based on poly(acrylamide-co-acrylic acid). In case SAPs were used, an additional fixed amount of water was added to mitigate autogenous shrinkage. The amount of SAPs used was determined based on their swelling capacity in cement filtrate and in order to obtain the same workability as the reference mixture. The amount of SAPs needed was in the range of 0.2-0.26 m% of the cement weight. To see whether the size of the SAPs plays a role in the efficiency of mitigating autogenous shrinkage, two average particle sizes, namely 40 and 100 µm, were tested. With the used amount of SAPs, a reduction or even complete counteraction of autogenous shrinkage was observed for the cement pastes.},
  author       = {De Meyst, Laurence and Debbaut, Brenda and Pereira Gomes de Araújo, Maria Adelaide and Van Tittelboom, Kim and Van Vlierberghe, Sandra and De Belie, Nele},
  booktitle    = {Durable Concrete for Infrastructure under Severe Conditions : Smart Admixtures, self-responsiveness and nano-additions},
  editor       = {Pereira Gomes de Araújo, Maria Adelaide and De Belie, Nele and Van Tittelboom, Kim},
  isbn         = {9789463886383},
  keywords     = {Superabsorbent polymers (SAPs),autogenous shrinkage,corrugated tubes,internal curing},
  language     = {eng},
  location     = {Ghent, Belgium},
  pages        = {100--105},
  publisher    = {Magnel Laboratory for Concrete Research},
  title        = {Use of superabsorbent polymers to mitigate autogenous shrinkage in ultra-high performance concrete},
  year         = {2019},
}