폴리프로필렌 섬유보강 화강토 콘크리트의 역학적 특성
Mechanical Properties of Granite Soil Concrete with Polypropylene Fiber
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초록
This study will not only prove experimental dynamic properties which are classified to slump, compressive strength, tensile strength,flexure strength and toughness granite soil concrete with a fine aggregate of granite soil and blast-furnace cement and polypropylenefiber over 45 mm, but also establish a basic data in order to use environment-friendly pavement through prove useful pavement mixedwith granite and polypropylene (PP) fiber which is a kind of material to prevent a dry shrinkage clack, a partial destruction and usefuland light. The value of slump test was gradually increased by PP fiber volume 3 kgf/m3, but compressive strength took a sudden turnfor the worse from 5 kgf/m3. The compressive strength indicated a range of 13.72∼18.35 MPa. On the contrary to compressivestrength, the tensile strength showed to decrease with rising PP fiber volume, and the tensile strength indicated a range of 1.43∼1.64 MPa. The tensile strength was stronger about 2∼15 % in case of mixing with PP fiber volume than normal concrete. The flexuralstrength indicated a range of 2.76∼3.41 MPa. The flexural strength was stronger about 20 % in case of PP fiber volume 0 kg/m3than PP fiber volume 9 kg/m3. The toughness indicated a range of 0∼25.46 N ․ mm and increased proportionally with PP fiber volume. The toughness was stronger about 8.3 times in case of PP fiber volume 9 kg/m3 than PP fiber volume 1 kg/m3. The pavement withPP fiber volume over such a fixed quantity in the park roads and walkways can have a effect to prevent not only resistance againstclack but also rip off failures.
Abstract
This study will not only prove experimental dynamic properties which are classified to slump, compressive strength, tensile strength,flexure strength and toughness granite soil concrete with a fine aggregate of granite soil and blast-furnace cement and polypropylenefiber over 45 mm, but also establish a basic data in order to use environment-friendly pavement through prove useful pavement mixedwith granite and polypropylene (PP) fiber which is a kind of material to prevent a dry shrinkage clack, a partial destruction and usefuland light. The value of slump test was gradually increased by PP fiber volume 3 kgf/m3, but compressive strength took a sudden turnfor the worse from 5 kgf/m3. The compressive strength indicated a range of 13.72∼18.35 MPa. On the contrary to compressivestrength, the tensile strength showed to decrease with rising PP fiber volume, and the tensile strength indicated a range of 1.43∼1.64 MPa. The tensile strength was stronger about 2∼15 % in case of mixing with PP fiber volume than normal concrete. The flexuralstrength indicated a range of 2.76∼3.41 MPa. The flexural strength was stronger about 20 % in case of PP fiber volume 0 kg/m3than PP fiber volume 9 kg/m3. The toughness indicated a range of 0∼25.46 N ․ mm and increased proportionally with PP fiber volume. The toughness was stronger about 8.3 times in case of PP fiber volume 9 kg/m3 than PP fiber volume 1 kg/m3. The pavement withPP fiber volume over such a fixed quantity in the park roads and walkways can have a effect to prevent not only resistance againstclack but also rip off failures.
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