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Durability of Polymer-Modified Mortars Using Acrylic Latexes with Methyl Methacrylate

MMA계 아크릴 라텍스를 혼입한 폴리머시멘트 모르타르의 내구성

  • Hyung Won-Gil (The Research Cutter of Industrial Technology, Chonbuk National University) ;
  • Kim Wan-Ki (Dept. of Urban Architecture and Engineering, Hyupsung University) ;
  • Soh Yang-Seob (Faculty of Architecture & Urban Engineering, Chonbuk National University)
  • Published : 2005.06.01

Abstract

Polymer-modified mortar and concrete are prepared by mixing either a polymer or monomer in a dispersed, or liquid form with fresh cement mortar and concrete mixtures, and subsequently curing, and if necessary, the monomer contained in the mortar or concrete is polymerized in situ. Although polymers and monomers in any form such as latexes, water-soluble polymers, liquid resins, and monomers are used in cement composites such as mortar and concrete, it is very important that both cement hydration and polymer phase formation proceed well the yield a monolithic matrix phase with a network structure in which the hydrated cement phase and polymer phase interpenetrate. In the polymer-modified mortar and concrete structures, aggregates are bound by such a co-matrix phase, resulting in the superior properties of polymer-modified mortar and concrete compared to conventional mortar and concrete. The purpose of this study is to obtain the necessary basic data to develope appropriate latexes as cement modifiers, and to clarify the effects of the monomer ratios and amount of emulsifier on the properties of the polymer-modified mortars using methyl methacrylate-butyl acrylate(MMA/BA) and methyl methacrylate-ethyl acrylate(MMA/EA) latexes. The results of this study are as follows, the water absorption, chloride ion penetration depth and carbonation depth of MMA/BA-modified mortar are lowest. However, they are greatly affected by the polymer-cement ratio rather than the bound MMA content and type of polymer.

References

  1. Kuhlmann, L.A. and Foor, 'Chloride Permeability versus Air Content of Latex Modified Concrete', Cement, Concrete, and Aggregates, Vol.6, No.1, 1984, pp.11-16 https://doi.org/10.1520/CCA10348J
  2. Erhard, G.F.C., 'Repair of Concrete Floors with Polymer Modified Cement Mortars', Adhesion between Polymers and Concrete: Bonding, Protection, Repair, Proceedings of an International Symposium Organized by RILEM Technical Committee 52-Resin Adherence to Concrete and Laboratoire Central des Ponts et Chaussees, Paris, Chapman and Hall, London, 1986, pp.230-244
  3. 大濱嘉彦, '建築用再ポ リマ―セメントモルタルの性狀と 調合設計に關する硏究', 建築硏究報告, No.65, 1973, pp.172-184
  4. Shirai A. and Ohama Y., 'Properties of Polymer-Modified Mortars with Garnet Sand', Proceedings of the IVth International Congress an Polymers in Concrete, 1998, pp.321-328
  5. Jo Y., Ohama Y., and Demura K., 'Properties of Polymer-Modified Mortars with Polymer Dispersion and Epoxy Resin', Transactions of the Japan Concrete Institute, Vol.15, 1993, pp.85-92
  6. Shirai A. and Ohama Y., 'Properties of Polymer-Modified Mortars with Garnet Sand', Proceedings of the IVth International Congress on Polymers in Concrete, 1998, pp.321-328
  7. F. Bueche, Physical Properties of Polymers, John Wiley & Sons, New York, 1962
  8. Ohama, Y., Handbook of polymer-modified concrete and mortar, Noues Publications, New Jersey, U.S.A, 1994

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  2. Effect of VAE Type Powder Polymer on Strength Properties of High Strength Polymer Cement Mortars vol.15, pp.3, 2015, https://doi.org/10.5345/JKIBC.2015.15.3.299
  3. The Properties of Durability and Strength of Fiber-Reinforced Polymer-Modified Mortars Using Eco-Friendly UM Resin vol.25, pp.3, 2013, https://doi.org/10.4334/JKCI.2013.25.3.313