강섬유 혼입 폴리머 시멘트 고강도 콘크리트 보의 전단거동

Shear Behavior of Polymer Cement High Strength Concrete Beams Mixed with Steel Fiber

  • 발행 : 2002.01.01

초록

Steel fiber and polymer are used widely for reinforcement material of RC structures because of its excellences of the durability, serviceability as well as mechanical properties. The purpose of this study is to investigate the shear behavior of polymer cement high strength concrete beams mixed with steel fiber. The compressive strength of concrete was based on the 100$\times$200 mm cylinder specimens. The compressive strength of concrete are 320$kgf/cm^2$, 436 $kgf/cm^2$ and 520 $kgf/cm^2$ in the 28 days. The static test was carried out to measure the ultimate load, the initial load of flexural and diagonal cracking, crack patterns and fracture modes. Also, load-strain and load-deflection examined. During the test cracks were sketched against the load values according to the growth of crack. result are as follows; (1) The failure modes of the specimens are increased in rigidity and durability with mixing steel fiber and polymer. (2) The load of initial crack was similar a theory of shear-crack strength. (3) The deflection and strain at failure load of Polymer-steel fiber high strength concrete beams were increased, improving the brittleness of the high strength concrete.

키워드

참고문헌

  1. ACI Strctural Journal v.88 no.2 Shear-faigue behavior of steel fiber reinforced concrete beams Kwak,K.H.;J.Sun;C.T.T.Hsu
  2. J. MACROMOL. SCL-CHEM v.A21 no.6;7 Effect of cement on properties of inverted emulsions and polymer from vinylmonomers with acid an hydride-adducted polypropylene glycel Hideaki Matsuda;Takashi Saheki
  3. AIC Materials Journal Research needs for high-strength concrete ACI Committee 363
  4. ACI Structures Journal Guide for the Use of Polymer in Concrete ACI Committee 548
  5. Builed code requiremints for reinforced concrete (ACI 318-95) and commentary (ACI 318R-95) ACI Committee 318