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Mitigating autogenous shrinkage by means of superabsorbent polymers : effect on concrete properties

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Abstract
(Ultra-)high performance concrete ((U)HPC) is very prone to autogenous shrinkage cracking. These cracks can create preferential pathways for the ingress of harmful substances which can facilitate the corrosion process of the steel reinforcement, resulting in a decreased durability and structural integrity of the concrete structure. Superabsorbent polymers (SAPs) can reduce or even mitigate autogenous shrinkage as they absorb water in the fresh concrete mix and provide it to the cement particles at the right moment in the hydration process, acting as internal curing agent for the concrete. To study the mitigation of autogenous shrinkage by SAPs, five different superabsorbent polymers based on the copolymerization of acrylic acid (AA) with dimethylaminoethyl methacrylate (DMAEMA) were synthesized at Ghent University. This paper focusses on the compatibility tests aiming at evaluating the effect of these SAPs on initial flow and slump life (rheology), hydration kinetics (reactivity) and mechanical properties (3, 7 and 28 days strength). The most promising SAPs will be further studied on their effect to mitigate autogenous shrinkage.
Keywords
superabsorbent polymers (SAPs), cementitious materials, autogenous shrinkage, internal curing, early age properties

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MLA
De Meyst, Laurence, Maria Adelaide Pereira Gomes de Araújo, Arn Mignon, et al. “Mitigating Autogenous Shrinkage by Means of Superabsorbent Polymers : Effect on Concrete Properties.” Early Age Cracking and Serviceability in Cement-based Materials and Structures. Ed. Stéphanie Staquet & Dimitrios Aggelis. Vol. 1. Paris (France): RILEM Publications, 2017. 227–232. Print.
APA
De Meyst, L., Pereira Gomes de Araújo, M. A., Mignon, A., Van Tittelboom, K., Van Vlierberghe, S., & De Belie, N. (2017). Mitigating autogenous shrinkage by means of superabsorbent polymers : effect on concrete properties. In Stéphanie Staquet & D. Aggelis (Eds.), Early Age Cracking and Serviceability in Cement-based Materials and Structures (Vol. 1, pp. 227–232). Presented at the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures (EAC-02), Paris (France): RILEM Publications.
Chicago author-date
De Meyst, Laurence, Maria Adelaide Pereira Gomes de Araújo, Arn Mignon, Kim Van Tittelboom, Sandra Van Vlierberghe, and Nele De Belie. 2017. “Mitigating Autogenous Shrinkage by Means of Superabsorbent Polymers : Effect on Concrete Properties.” In Early Age Cracking and Serviceability in Cement-based Materials and Structures, ed. Stéphanie Staquet and Dimitrios Aggelis, 1:227–232. Paris (France): RILEM Publications.
Chicago author-date (all authors)
De Meyst, Laurence, Maria Adelaide Pereira Gomes de Araújo, Arn Mignon, Kim Van Tittelboom, Sandra Van Vlierberghe, and Nele De Belie. 2017. “Mitigating Autogenous Shrinkage by Means of Superabsorbent Polymers : Effect on Concrete Properties.” In Early Age Cracking and Serviceability in Cement-based Materials and Structures, ed. Stéphanie Staquet and Dimitrios Aggelis, 1:227–232. Paris (France): RILEM Publications.
Vancouver
1.
De Meyst L, Pereira Gomes de Araújo MA, Mignon A, Van Tittelboom K, Van Vlierberghe S, De Belie N. Mitigating autogenous shrinkage by means of superabsorbent polymers : effect on concrete properties. In: Staquet S, Aggelis D, editors. Early Age Cracking and Serviceability in Cement-based Materials and Structures. Paris (France): RILEM Publications; 2017. p. 227–32.
IEEE
[1]
L. De Meyst, M. A. Pereira Gomes de Araújo, A. Mignon, K. Van Tittelboom, S. Van Vlierberghe, and N. De Belie, “Mitigating autogenous shrinkage by means of superabsorbent polymers : effect on concrete properties,” in Early Age Cracking and Serviceability in Cement-based Materials and Structures, Brussel, 2017, vol. 1, pp. 227–232.
@inproceedings{8557312,
  abstract     = {(Ultra-)high performance concrete ((U)HPC) is very prone to autogenous shrinkage cracking. These cracks can create preferential pathways for the ingress of harmful substances which can facilitate the corrosion process of the steel reinforcement, resulting in a decreased durability and structural integrity of the concrete structure. Superabsorbent polymers (SAPs) can reduce or even mitigate autogenous shrinkage as they absorb water in the fresh concrete mix and provide it to the cement particles at the right moment in the hydration process, acting as internal curing agent for the concrete. To study the mitigation of autogenous shrinkage by SAPs, five different superabsorbent polymers based on the copolymerization of acrylic acid (AA) with dimethylaminoethyl methacrylate (DMAEMA) were synthesized at Ghent University. This paper focusses on the compatibility tests aiming at evaluating the effect of these SAPs on initial flow and slump life (rheology), hydration kinetics (reactivity) and mechanical properties (3, 7 and 28 days strength). The most promising SAPs will be further studied on their effect to mitigate autogenous shrinkage.},
  author       = {De Meyst, Laurence and Pereira Gomes de Araújo, Maria Adelaide and Mignon, Arn and Van Tittelboom, Kim and Van Vlierberghe, Sandra and De Belie, Nele},
  booktitle    = {Early Age Cracking and Serviceability in Cement-based Materials and Structures},
  editor       = {Staquet, Stéphanie and Aggelis, Dimitrios},
  isbn         = {978-2-35158-199-5},
  keywords     = {superabsorbent polymers (SAPs),cementitious materials,autogenous shrinkage,internal curing,early age properties},
  language     = {eng},
  location     = {Brussel},
  pages        = {227--232},
  publisher    = {RILEM Publications},
  title        = {Mitigating autogenous shrinkage by means of superabsorbent polymers : effect on concrete properties},
  volume       = {1},
  year         = {2017},
}