Systemic multi-scale approaches to predict the flowability at various temperature and mechanical properties of cement paste modified with nano-calcium carbonate

Salih, Ahmed; Rafiq, Serwan; Mahmood, Wael; AL-Darkazali, Hind; Noaman, Riyadh; Ghafor, Kawan; Qadir, Warzer

doi:10.1016/j.conbuildmat.2020.120777

Cited by 57 publications

(13 citation statements)

References 42 publications

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“…By solving the ODE, an approximate constitutive relation of cement-based material included w/c and temperature is obtained. At last, it is compared with the experimental results of Vipulanandan and Mohammed (2015), Huang et al (2021) and Salih et al (2020) to confirm the correctness of the present model.…”

Section: Rheological Model Of Cement-based Materialsmentioning

confidence: 63%

“…(4) The present prediction results are compared with the rheological experiments of Vipulanandan and Mohammed (2015), Huang et al (2021) and Salih et al, (2020) with variable w/c and temperatures to show that the higher shear stress is derived by the higher shear rate and temperature but lower w/c. However, a lower w/c can promote a better stability of cement pastes.…”

Section: Discussionmentioning

confidence: 97%

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Rheological model of cement-based material slurry with different water-cement ratio and temperature

Dong,

Chen,

Yang

et al. 2024

MMMS

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PurposeThe purpose of this paper is to obtain a constitutive model of cement-based material in the rheological stage, which owns the different water-cement ratio (w/c) and temperature and have a significant impact on the workability of concrete materials.Design/methodology/approachIt is introduced a modified Arrhenius equation into the Herschel–Bulkley model, which is widely applied in rheological analysis and constructed an ordinary differential equation (ODE) of w/c from the Navier–Stokes equation. By solving the ODE, an approximate constitutive relation of cement-based materials included w/c and temperature is derived. Compared with the experimental results, the present model is validated.FindingsThe shear stress and shear rate curves with different w/c and temperature are simulated by the present method, and the present model can be applied to analyze the changes of apparent viscosity in cement-based material slurry as the w/c and temperature varying.Originality/valueThis work gives a mathematical model, which can effectively approximate the shear stress–shear rate relation with different w/c and temperature in the rheological stage of cement-based material.

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Section: Rheological Model Of Cement-based Materialsmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 97%

Rheological model of cement-based material slurry with different water-cement ratio and temperature

Dong,

Chen,

Yang

et al. 2024

MMMS

View full text Add to dashboard Cite

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“…It also provides enhanced strength, while reducing shrinkage during hydration (Cai et al, 2016). Finally, it drastically reduces the loss of water at temperatures as high as 800 C (Salih et al, 2020). It is expected that more research will be devoted to this material once its manufacturing and distribution becomes more widespread.…”

Section: Other Mineral Additionsmentioning

confidence: 99%

Nano-modification in digital manufacturing of cementitious composites

Filho

Chen

Çopuroğlu

2022

Recent Advances in Nano-Tailored Multi-Functional Cementitious Composites

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“…Several research studies reported [3] that cement grout is used to repair the construction items in the field [4]. Several research studies have used various types of grout material, such as a cement replacement with byproduct materials like fly ash [5,6], silica fume [7], and metakaolin [8], and the cement modified with polymers [9][10][11][12]. High flowability cement-based grout is a remarkable target to ensure that the cement has covered most of the granular solid materials; as a result, the component's compressive [5,13] and bonding strengths will considerably improve [14,15].…”

Section: Introductionmentioning

confidence: 99%

Interpreting the experimental results of compressive strength of hand-mixed cement-grouted sands using various mathematical approaches

Mahmood

Mohammed

Sihag

et al. 2021

Archiv.Civ.Mech.Eng

Self Cite

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Using two different test standards (ASTM and BS), the influence of five different sizes of sand on the ultimate stress (MPa) of hand-mixed cement-grouted sands modified with polymer is discussed in this study. The characteristics of cement-grouted sands modified with polymer up to 0.16% (percent weight of dry cement) were evaluated and measured in fresh and hardened conditions. Adding polymer decreased the water/cement ratio ( w∕c ) from 0.6 to 0.5, and it kept the flow time of the cement-based grout in the range of 18 to 23 s recommended by ASTM standard. Using mix proportion and curing time, adding polymer significantly increased the prismatic and cylindrical compressive strength (MPa) by 113 to 577% and 53 to 459%. Several mathematical approaches such as linear regression (LR), Nonlinear regression (NLR), multilinear regression (MLR), Artificial neural network (ANN), and M5P-tree were used to predict the compression strength of cement-grouted sand with a different size of sand, w/c, polymer content, and curing age. Based on the scatter index (SI), objective function (OBJ) assessments, and training and testing datasets, the compressive strength of the cement-grouted sands can be predicted well using NLR and ANN models. The compression strength tested using the BS standard was 71% higher than the compression strength of the same mix tested using the ASTM standard.

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Systemic multi-scale approaches to predict the flowability at various temperature and mechanical properties of cement paste modified with nano-calcium carbonate

Cited by 57 publications

References 42 publications

Rheological model of cement-based material slurry with different water-cement ratio and temperature

Rheological model of cement-based material slurry with different water-cement ratio and temperature

Nano-modification in digital manufacturing of cementitious composites

Interpreting the experimental results of compressive strength of hand-mixed cement-grouted sands using various mathematical approaches

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