Article
  • Tensile Strength and Tensile Adhesive Strengths of Polymer-Modified Mortar with Methyl Methacrylate-Based Latexes
  • Hyung W, Lee C, Park S
  • MMA계 라텍스를 혼입한 폴리머 시멘트 모르타르의 인장강도 및 부착강도
  • 형원길, 이찬태, 박성무
Abstract
This paper investigates the effects of the monomer ratios on the typical properties of polymermodified mortars that contain methyl methacrylate-based latexes. Basic data are also obtained to develop appropriate latexes for cement modifiers. Polymer-modified mortars that contain methyl methacrylate latexes copolymerized with butyl acrylate or ethyl acrylate are prepared for different polymer-cement ratios. They are then tested to obtain the tensile and tensile adhesive strengthes of polymer-modified mortar with methyl methacrylate-based latexes. From the test results, the tensile strength of MB7 polymer-modified mortar was higher than normal cement mortar by a maximum of 94% with a 20% polymer-cement ratio, which was almost twice higher than normal. The tensile adhesive strength of the MB polymer-modified mortar was higher for higher MMA monomer contents and polymer-cement ratios, and increased up to four times than that of normal cement mortar. The basic properties of the polymer-modified mortars are more affected by the polymer-cement ratio than by the monomer ratio, and are improved over unmodified mortar.

본 연구에서는 시멘트 복합체의 단점을 보완하기 위해 유기화합물인 폴리머를 시멘트 모르타르에 혼입하여 폴리머 시멘트 모르타르를 제작하고 이에 대한 인장력과 부착특성을 개선시키고자 하였다. 또한, 폴리머 시멘트 모르타르 내에서 형성되는 폴리머 필름의 인장강도와 유리전이온도가 폴리머 시멘트 모르타르의 인장강도와 부착특성에 미치는 영향을 파악하였다. 본 연구 결과 폴리머 시멘트 모르타르는 보통 시멘트 모르타르에 비해 인장강도의 경우 최대 2배 정도 증진효과를 나타내고 있었으며 부착특성에 있어서도 약 4배 정도의 증진효과가 나타났다.

Keywords: polymer-modified mortar; tensile strength; tensile adhesive strength

References
  • 1. Mun KJ, Song HR, Hyung WG, Polym.(Korea), 32(6), 555 (2008)
  •  
  • 2. Mun KJ, Hyung WG, Polym.(Korea), 32(6), 603 (2008)
  •  
  • 3. Hyung W, Mun K, Kim W, J. Appl. Polym. Sci., 103(5), 3010 (2007)
  •  
  • 4. Pei M, Wu Y, Kim W, Hyung W, Soh Y, J. Appl. Polym. Sci., 93(5), 2403 (2004)
  •  
  • 5. Song H, Hyung W, Kim W, Soh Y, Korea Concrete Institute, 13, 1011 (2001)
  •  
  • 6. Mai YW, Cotterell B, Cement Concrete Research, 16, 646 (1986)
  •  
  • 7. Kim W, Architectural Institute of Korea, 22, 119 (2006)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2010; 34(3): 247-252

    Published online May 25, 2010

  • Received on Jan 7, 2010
  • Accepted on Feb 3, 2010