CAJ | 학술논문

对掺入两种不同纤维的活性粉末混凝土在不同养护条件下的使用寿命进行了试验研究，分析掺不同纤维对活性粉末混凝土使用寿命的影响。试验结果表明：经过湿热养护后活性粉末混凝土试块的使用寿命得到较大提高；掺钢纤维使活性粉末混凝土的寿命降低，且每掺入1％的钢纤维，活性粉末混凝土的寿命降低5％~10％；掺聚丙烯纤维能提高活性粉末混凝土的寿命，最多能提高15％，聚丙烯纤维的掺量超过0．2％后，其对活性粉末混凝土寿命的提高作用不明显；混合掺入两种纤维时，钢纤维对活性粉末混凝土寿命的降低作用和聚丙烯纤维对活性粉末混凝土寿命的提升作用是相互叠加的。
대참입량충불동섬유적활성분말혼응토재불동양호조건하적사용수명진행료시험연구，분석참불동섬유대활성분말혼응토사용수명적영향。시험결과표명：경과습열양호후활성분말혼응토시괴적사용수명득도교대제고；참강섬유사활성분말혼응토적수명강저，차매참입1％적강섬유，활성분말혼응토적수명강저5％~10％；참취병희섬유능제고활성분말혼응토적수명，최다능제고15％，취병희섬유적참량초과0．2％후，기대활성분말혼응토수명적제고작용불명현；혼합참입량충섬유시，강섬유대활성분말혼응토수명적강저작용화취병희섬유대활성분말혼응토수명적제승작용시상호첩가적。
The reactive powder concrete specimens mixed with steel fiber and polypropylene fiber were tested in service life under dif-ferent curing conditions and the impact of mixing different fiber into reactive powder concrete in service life was analyzed. Results of this test show that heat curing condition can significantly enhance the service life of reactive powder concrete specimens. Mixing steel fi-ber into reactive powder concrete can reduce the service life of reactive powder concrete,and each 1%steel fiber mixed into,the service life of the reactive powder concrete will be reduced by 5%~10%. Mixing polypropylene fiber into reactive powder concrete can enhance the service life of reactive powder concrete by 15%at most.When the content of polypropylene fiber is more than 0.2%,the enhancement effect to reactive powder concrete′s life will be not obvious. When the two kinds of fibers been mixed into reactive powder concrete specimens,the reduce role of steel fibers to reactive powder concrete′s life and the enhance role of polypropylene fibers to reactive pow-der concrete′s are superimposed on each other.