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Rheological characterization of the viscoelastic solid-like properties of fresh cement pastes with nanoclay addition

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Abstract
At sufficiently low applied shear deformation or shear stress, fresh cement paste exhibits viscoelastic solid-like behavior. This solid-like state is particularly important for some applications, such as self-consolidating concrete formwork pressure and 3D concrete printing. In this study, the viscoelastic solid-like behavior of fresh cement pastes is probed using a rheometer. Static yield stress, storage modulus, and cohesion are measured by creep recovery and constant shear rate test, small amplitude oscillatory sweep (SAOS) test and tack test, respectively. The effect of nanoclay addition is studied in various aspects of viscoelastic performance of fresh cement pastes. It is found that nanoclay addition not only enhances yield stress and cohesion, but also stiffness in terms of storage and tangent modulus.
Keywords
STATIC YIELD-STRESS, FLOW BEHAVIOR, FLY-ASH, THIXOTROPY, MORTARS, SLUMP, RECOVERY, CLAYS, CREEP, SLIP, Static yield stress, Storage modulus, Tangent shear modulus, Cohesion, Nanoclay

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MLA
Qian, Ye, et al. “Rheological Characterization of the Viscoelastic Solid-like Properties of Fresh Cement Pastes with Nanoclay Addition.” THEORETICAL AND APPLIED FRACTURE MECHANICS, vol. 103, Elsevier, 2019.
APA
Qian, Y., Ma, S., Kawashima, S., & De Schutter, G. (2019). Rheological characterization of the viscoelastic solid-like properties of fresh cement pastes with nanoclay addition. THEORETICAL AND APPLIED FRACTURE MECHANICS, 103.
Chicago author-date
Qian, Ye, Siwei Ma, Shiho Kawashima, and Geert De Schutter. 2019. “Rheological Characterization of the Viscoelastic Solid-like Properties of Fresh Cement Pastes with Nanoclay Addition.” THEORETICAL AND APPLIED FRACTURE MECHANICS 103.
Chicago author-date (all authors)
Qian, Ye, Siwei Ma, Shiho Kawashima, and Geert De Schutter. 2019. “Rheological Characterization of the Viscoelastic Solid-like Properties of Fresh Cement Pastes with Nanoclay Addition.” THEORETICAL AND APPLIED FRACTURE MECHANICS 103.
Vancouver
1.
Qian Y, Ma S, Kawashima S, De Schutter G. Rheological characterization of the viscoelastic solid-like properties of fresh cement pastes with nanoclay addition. THEORETICAL AND APPLIED FRACTURE MECHANICS. 2019;103.
IEEE
[1]
Y. Qian, S. Ma, S. Kawashima, and G. De Schutter, “Rheological characterization of the viscoelastic solid-like properties of fresh cement pastes with nanoclay addition,” THEORETICAL AND APPLIED FRACTURE MECHANICS, vol. 103, 2019.
@article{8637505,
  abstract     = {{At sufficiently low applied shear deformation or shear stress, fresh cement paste exhibits viscoelastic solid-like behavior. This solid-like state is particularly important for some applications, such as self-consolidating concrete formwork pressure and 3D concrete printing. In this study, the viscoelastic solid-like behavior of fresh cement pastes is probed using a rheometer. Static yield stress, storage modulus, and cohesion are measured by creep recovery and constant shear rate test, small amplitude oscillatory sweep (SAOS) test and tack test, respectively. The effect of nanoclay addition is studied in various aspects of viscoelastic performance of fresh cement pastes. It is found that nanoclay addition not only enhances yield stress and cohesion, but also stiffness in terms of storage and tangent modulus.}},
  articleno    = {{UNSP 102262}},
  author       = {{Qian, Ye and Ma, Siwei and Kawashima, Shiho and De Schutter, Geert}},
  issn         = {{0167-8442}},
  journal      = {{THEORETICAL AND APPLIED FRACTURE MECHANICS}},
  keywords     = {{STATIC YIELD-STRESS,FLOW BEHAVIOR,FLY-ASH,THIXOTROPY,MORTARS,SLUMP,RECOVERY,CLAYS,CREEP,SLIP,Static yield stress,Storage modulus,Tangent shear modulus,Cohesion,Nanoclay}},
  language     = {{eng}},
  pages        = {{7}},
  publisher    = {{Elsevier}},
  title        = {{Rheological characterization of the viscoelastic solid-like properties of fresh cement pastes with nanoclay addition}},
  url          = {{http://dx.doi.org/10.1016/j.tafmec.2019.102262}},
  volume       = {{103}},
  year         = {{2019}},
}

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