셀룰로오스 섬유보강 콘크리트를 사용한 기계화경작로 확 · 포장공사의 현장사례 연구
Field Case Study of Mechanized Form Roads Pavement Construction using Cellulose Fiber Reinforced Concrete
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At the present, the mechanized form roads pavement was constructed with plain concrete. Mostly, it was used by welded wire mesh for preventing crack. Cellulose fibers for the reinforcement of concrete offer relatively high levels of elastic modulus, fiber count (per unit weight), specific surface, and bondstrength to cement-based materials. The construction of concrete pavement confirmed that cellulose fiber reinforced concrete was applicable tomechanized form roads pavement. In the study, cellulose fibers were used here at 0.08 % volume fraction, which is equivalent to a fiber content of 1.2 kg/㎥. Cellulose fiber reinforced concrete were compared with plain concrete. Field test results indicated that cellulose fiber reinforced concrete showedslightly to increase of 28 days compressive strength and improved the initial strength. it tended to increase of splitting tensile strength. Test results showedthat the slump and air content tend to decreased. but, the variation of air contends is very little. Also, construction cost of cellulose fiber reinforced concreteis less than about 25.7 % the case of welded wire mesh previously used. Therefore, The cost reduction is expected to be possible in construction site bymechanized form roads pavement.
Abstract
At the present, the mechanized form roads pavement was constructed with plain concrete. Mostly, it was used by welded wire mesh for preventing crack. Cellulose fibers for the reinforcement of concrete offer relatively high levels of elastic modulus, fiber count (per unit weight), specific surface, and bondstrength to cement-based materials. The construction of concrete pavement confirmed that cellulose fiber reinforced concrete was applicable tomechanized form roads pavement. In the study, cellulose fibers were used here at 0.08 % volume fraction, which is equivalent to a fiber content of 1.2 kg/㎥. Cellulose fiber reinforced concrete were compared with plain concrete. Field test results indicated that cellulose fiber reinforced concrete showedslightly to increase of 28 days compressive strength and improved the initial strength. it tended to increase of splitting tensile strength. Test results showedthat the slump and air content tend to decreased. but, the variation of air contends is very little. Also, construction cost of cellulose fiber reinforced concreteis less than about 25.7 % the case of welded wire mesh previously used. Therefore, The cost reduction is expected to be possible in construction site bymechanized form roads pavement.
참고문헌 (15)
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