Physico-chemical characterization of EVA-modified mortar and porcelain tiles interfaces

Nascimento, Otávio Luiz do; Mansur, Alexandra A.P.

doi:10.1016/j.cemconres.2009.07.020

Cited by 74 publications

(39 citation statements)

References 32 publications

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“…Some of them may react with water and lose their cohesion by swallowing and dissolving of polymer film that leads to the reduction in strength. But some polymers may react with water and make strong hydrogen bond which contributes to increase in strength [37,38]. However since the absorbed water in PCM is quite limited during W/D cycles and it is observed by Ramli et al [39] and reported the water absorption was below 0.5% even after 550 days.…”

Section: Wetting and Drying Cyclesmentioning

confidence: 98%

Experimental and analytical investigations on the behavior of interface between concrete and polymer cement mortar under hygrothermal conditions

Rashid

Ueda

Zhang

et al. 2015

Construction and Building Materials

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Section: Wetting and Drying Cyclesmentioning

confidence: 98%

Experimental and analytical investigations on the behavior of interface between concrete and polymer cement mortar under hygrothermal conditions

Rashid

Ueda

Zhang

et al. 2015

Construction and Building Materials

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“…Some researches contributed the length prolongation of the induction period and the delayed onset of the acceleration period to the adsorption of polymer particles on cement particles and the complexation effect of Calorimetric study on the influence of redispersible E/VC/VL terpolymer on the early… 1231 organic groups released by polymers with Ca 2? ions [15][16][17][18]28]. But fewer organic groups will be released by the E/VC/VL in fresh cement paste to complex with Ca 2?…”

Section: Isothermal Calorimetrymentioning

confidence: 99%

“…Literature [13] attributed the adhesion improvement to polymer films penetrating the capillary pores of substrates accompanied with hydrates. But Mansur et al [15] demonstrated that the extension of hydrolysis of EVA is positively related to the improvement of adhesion with the formation of hydrogen bonds at interface. Silva et al [16] found that the acetate groups from EVA hydrolysis can interact with Ca 2?…”

Section: Introductionmentioning

confidence: 99%

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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“…It has been reported that the addition of polymer latex can greatly improve the bond strength of cement-based material with substrate. For example, Mansur et al (2009; and Almeida et al (2007) reported that the tensile bond strength between ceramic tile and latex-modified mortar increases almost 30% compare with reference mortar. Some results showed that the adhesive strength of mortar modified with higher concentration of latex can be two times higher than that of standard mortar (Jenni et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Some results showed that the adhesive strength of mortar modified with higher concentration of latex can be two times higher than that of standard mortar (Jenni et al 2005). The enhancement of bond strength is attributed to the formation of polymer film at the paste-substrate interface (Mansur et al 2009). The addition of polymer latex has also contributed to improved paste-coarse aggregate bond strength (Kim et al 1999;Morin et al 2011) and lower drying shrinkage and creep (Al-Zahrani et al 2003;Ohama 1975) in latex-modified concrete.…”

Section: Introductionmentioning

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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Physico-chemical characterization of EVA-modified mortar and porcelain tiles interfaces

Cited by 74 publications

References 32 publications

Experimental and analytical investigations on the behavior of interface between concrete and polymer cement mortar under hygrothermal conditions

Experimental and analytical investigations on the behavior of interface between concrete and polymer cement mortar under hygrothermal conditions

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

Latex-modified Engineered Cementitious Composites (L-ECC)

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