Effect of EVA on the fresh properties of cement paste

Betioli, Andrea Murillo; Gleize, Philippe Jean Paul; John, Vanderley M.; Pileggi, Rafael Giuliano

doi:10.1016/j.cemconcomp.2011.10.004

Cited by 88 publications

(32 citation statements)

References 16 publications

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“…2). The automatic exponential mode was adopted because it is the default mode of the equipment and was used in previous publications [14,16,17,20,21]. The normal force was measured at the lower plate.…”

Section: Sample Loadingmentioning

confidence: 99%

“…Most of the studies aimed to evaluate the effects of composition and admixtures [9,[13][14][15][16][17][18][20][21][22]; while others focused on the influence of processing parameters like mixing method [4] and temperature [17]; understanding the setting kinetics and microstructural development [11,16,17,[19][20][21][22]; or the relationship between rheology of cement paste and that of concrete [7,15,18]. The technique was also utilised for the development of a reference material intended for calibration of cement paste rheometers [12].…”

Section: Introductionmentioning

confidence: 99%

“…Because of its suitable features, the parallel-plate geometry has been extensively used for the rheometry of cement pastes in flow [4,[6][7][8][9][10][11][12][13][14][15][16][17][18] and small amplitude oscillatory [4,[16][17][18][19][20][21][22] modes. Most of the studies aimed to evaluate the effects of composition and admixtures [9,[13][14][15][16][17][18][20][21][22]; while others focused on the influence of processing parameters like mixing method [4] and temperature [17]; understanding the setting kinetics and microstructural development [11,16,17,[19][20][21][22]; or the relationship between rheology of cement paste and that of concrete [7,15,18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Parallel-plate rotational rheometry of cement paste: Influence of the squeeze velocity during gap positioning

Cardoso

Fujii

Pileggi

et al. 2015

Cement and Concrete Research

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Section: Sample Loadingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Parallel-plate rotational rheometry of cement paste: Influence of the squeeze velocity during gap positioning

Cardoso

Fujii

Pileggi

et al. 2015

Cement and Concrete Research

View full text Add to dashboard Cite

“…As can be seen, both the viscosity and the air content of fresh mortar increases with increasing EVA content. The addition of EVA reduces the inter-particle space of the system and therefore the viscosity increases when more polymer particles are added into the fresh mixture (Betioli et al 2012). Higher viscosity tends to entrap more air during mixing resulting in higher air content when EVA is used in the mixture.…”

Section: Test Methodsmentioning

confidence: 99%

Latex-modified Engineered Cementitious Composites (L-ECC)

Chen

Yang

Yao

et al. 2014

ACT

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This paper reports the influence of polymer latex on the fresh and the hardened properties of engineered cementitious composites (ECC), a unique strain-hardening cement-based material featuring extreme tensile strain capacity of 3-5%. Ethylene-vinyl acetate (EVA) dispersible polymer powder was employed in the synthesis of latex-modified ECC (L-ECC). The effects of EVA dosage on viscosity, air content, compressive strength, direct tensile stress-strain relation, four point bending behavior, and microstructure of L-ECC were reported. It was found that the addition of EVA increases the viscosity and the air content of fresh mixture. While the compressive and the tensile strength of L-ECC decrease with increasing EVA dosage, the tensile strain capacity and the toughness of the resulting material show significant enhancement. This is attributed to the change of microstructure as evidenced by the SEM images when EVA is used in the mixture.

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“…EVA can reduce the early shrinkage [12] and improve the bond strength [2,13], the impermeability, the fracture toughness and many physical properties [3,14]. Betioli et al [14] attributed the improvement of EVA on rheological properties to the ball-bearing effect and believed that EVA has minor influence on the early cement hydration. Literature [13] attributed the adhesion improvement to polymer films penetrating the capillary pores of substrates accompanied with hydrates.…”

Section: Introductionmentioning

confidence: 98%

Calorimetric study on the influence of redispersible E/VC/VL terpolymer on the early hydration of Portland cement

Zhang

Wang

et al. 2016

J Therm Anal Calorim

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The effects of redispersible ethylene-vinyl chloride-vinyl laurate terpolymer (E/VC/VL) on the early hydration evolution of Portland cement were quantitatively investigated by isothermal calorimetry, setting time testing, thermal analysis, Fourier transform infrared spectroscopy, X-ray diffraction analysis and environmental scanning electron microscope analysis. The results show that the E/VC/VL definitely affects the early hydration process of cement paste, increases the initial exothermic peak value, decreases the heat evolution rate of the acceleration period and the second hydration exothermic peak, but increases the heat evolution rate during the deceleration period. And the E/VC/VL has little effects on the length of these different hydration periods. The E/VC/VL decreases hydration heat and hydration degree within 72 h, and the bigger the E/VC/VL dosage is, the less hydration heat and hydration degree are. The E/VC/VL retards the formation of hydrates, decreases the content of Ca(OH) 2 and CSH gels, affects the morphology evolution of hydrates and declines the crystalline degree and crystal size of Ca(OH) 2 . Besides, the E/VC/VL retards the formation of AFt and inhibits the conversion of AFt to AFm, accordingly keeping AFt content higher at later hydration time. In addition, no new phases are formed in cement paste with the E/VC/ VL. The retardation of E/VC/VL is also evidenced by the setting time of cement pastes. But with hydration time prolonging, the retardation of E/VC/VL on cement hydration gradually weakens.

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Effect of EVA on the fresh properties of cement paste

Cited by 88 publications

References 16 publications

Parallel-plate rotational rheometry of cement paste: Influence of the squeeze velocity during gap positioning

Parallel-plate rotational rheometry of cement paste: Influence of the squeeze velocity during gap positioning

Latex-modified Engineered Cementitious Composites (L-ECC)

Calorimetric study on the influence of redispersible E/VC/VL terpolymer on the early hydration of Portland cement

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