Properties of Polymer Modified Mortars Using Re-dispersible Polymer Powders

Bae, Sang-Chan; Hyung, Won-gil

doi:10.5345/jkibc.2013.13.3.235

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…Polymers improve flexibility, crack-bridging properties and adhesion to the substrate. The microstructure changes are influenced by the simultaneous cement-hydration reactions and the polymer-coalescence process [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Polymer Modifiers on Selected Properties and Microstructure of Cement Waterproofing Mortars

2021

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This paper presents the results of research on the influence of polymer modifiers: styrene-acrylic copolymer, vinyl acetate/ethylene (EVA), vinyl acetate/acrylic copolymer (VAAc), and VA/VeoVa/acrylic terpolymer on the water permeability and adhesion of cement-containing waterproofing mortars in concrete. The content of the polymers in the composition of the mortars was 15, 20 and 26% (m/m) in relation to the weight of the dry ingredients. Using microscopic methods, an attempt was made to analyse the relationship between the microstructure of the mortars and the properties of these polymers. The EVA and the vinyl acetate/acrylic copolymer, which were used in the form of dry powders, had the most favourable effect on water permeability and adhesion to the concrete substrate. They may prove to be useful for the production of one-component cement-containing waterproofing mortars. On the other hand, the VA/VeoVa/acrylic terpolymer modifier had the least favourable effect on the tested properties. For mortars with this modifier, the desired water-permeability parameters were not achieved. Depending on the amount of polymer modifier, the mortars were characterized by differences in watertightness, as established on the basis of changes in porosity and differences in the adhesion of the cement-polymer paste to the surface of aggregate grains. It was determined that the type of polymer and its dispergation properties influence the water permeability of mortars, as well as their adhesion to concrete substrates.

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Section: Introductionmentioning

confidence: 99%

“…Polymer modifiers can be found both in the form of aqueous dispersions and redispersible powders [1,[15][16][17][18]. Waterproofing mortars with polymer modifiers are offered as one-component products (mixtures of dry components) or two-component products (dry components of the mortar plus a liquid polymer).…”

Section: Introductionmentioning

confidence: 99%

Influence of Polymer Modifiers on Selected Properties and Microstructure of Cement Waterproofing Mortars

2021

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Effect of mixing ratio on fire resistance of cement mortar with polypropylene fiber and polymer

Jeon,

Choi

2023

Case Studies in Construction Materials

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Bonding Properties of Steel-reinforced Polymer Cement Mortar Evaluated by Pull-off Test and FEM Modeling

Park¹,

Yoneda²,

Cho³

2014

Journal of the Korea Institute of Building Construction

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Chloride attack to reinforced concrete structures located in seaside can cause a serious problem of durability and maintenance during the service life. Corrosion of reinforced steel bars in concrete decreases the bond strength and finally causes the detachment of concrete cover. Polymer cement mortar is usually adopted to repair the deteriorated RC structures because of its strong bonding property. The recovered load-carrying capacity after the repair was simulated by non-linear FEM analysis. The properties of concrete, repairing materials, bonding materials and reinforced bar were used as input data. Four types of redispersible polymer powders were used as components of polymer cement mortar. Pull-off tests were carried out to examine the bond properties such as rigidity and strength. Effects of a corrosion inhibitor and the loss of reinforced bars due to the corrosion were also considered in this study. FEM modeling and analysis were conducted to propose the universal model. Physical bonding in the relationship between repair materials and steel reinforced bar is more dominant than chemical bonding.

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Properties of Polymer Modified Mortars Using Re-dispersible Polymer Powders

Cited by 5 publications

References 6 publications

Influence of Polymer Modifiers on Selected Properties and Microstructure of Cement Waterproofing Mortars

Influence of Polymer Modifiers on Selected Properties and Microstructure of Cement Waterproofing Mortars

Effect of mixing ratio on fire resistance of cement mortar with polypropylene fiber and polymer

Bonding Properties of Steel-reinforced Polymer Cement Mortar Evaluated by Pull-off Test and FEM Modeling

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