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Experimental Study on Anti-sulfate and Chlorine Salt Corrosion Performance of Hybrid Fiber Reinforced Concrete

Author: HuangGuoDong
Tutor: MaQinYong
School: Anhui University of Technology
Course: Structural Engineering
Keywords: Hybrid Fiber Reinforced Concrete Steel fiber Polypropylene fiber Fly ash Compressive strength Splitting tensile strength Flexural strength
CLC: TU528.572
Type: Master's thesis
Year: 2010
Downloads: 70
Quote: 1
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Abstract


On the basis of theoretical research first designed and produced 126 standard test cubes and 9 small beam specimen, plain concrete, fly ash concrete, polypropylene fiber reinforced concrete layer hybrid fiber reinforced concrete and non-layer cloth type hybrid fiber concrete compressive strength, splitting tensile and flexural strength test research. The results show that the dosage of 30% fly ash concrete 28d compressive strength, splitting tensile strength and flexural strength than plain concrete reduced 10.5%, 5.4%, 12.3%. Polypropylene fiber added can not improve the compressive strength of the concrete, but can be slightly increased the splitting tensile strength and improve the brittleness of concrete. Layer hybrid fiber reinforced concrete can significantly improve the splitting strength and flexural strength of concrete to improve the brittleness of concrete. Followed by the design and production of plain concrete, fly ash concrete, 36 layer hybrid fiber reinforced concrete cube specimens and 36 small beam specimens, specimen conservation 28d in the box to the erosion of saturated sulfate solution single factor test, trial total erosion 200d every 50d, respectively, to test the compressive strength and flexural strength. The test results show that the plain concrete poor resistance to erosion, erosion 200d compressive strength and flexural strength of 10.8% and 1.8% higher than the 28d better than plain concrete, fly ash concrete resistance to erosion, anti-erosion 200d compressive strength and flexural strength of 16.2% and 9.3% higher than the 28d, erosion layer hybrid fiber reinforced concrete compressive strength and flexural strength than 28d 200d increased 10.7% and 6.1%, while improving the brittleness of concrete. Then design and production of plain concrete, fly ash concrete layer hybrid fiber reinforced concrete 36 small beam specimens, the conservation of the specimen after 28 days in the box saturated chloride solution single factor erosion test, test total erosion 200d every 50d, respectively, to test the compressive strength and flexural strength. The test results showed that the saturated solution of chloride effect of erosion and damage to the concrete is lower than the sulfate solution had the effect of erosion and damage. Erosion of plain concrete flexural strength than 28d 200d 14.6% fly ash concrete erosion 200d flexural strength 22.6% higher than the 28d layer hybrid fiber reinforced concrete erosion 200d after flexural strength higher than the 28d 11.4%, while improving the brittleness of concrete. Final design and production of plain concrete, fly ash concrete, layered hybrid fiber reinforced concrete 36 cubic specimen, specimen conservation 28d in the box mixed solution of saturated sulfate and saturated chloride corrosion test, the test total erosion 200d every 50d compressive strength test. The test results show that the erosion effect of a mixed solution of concrete to be weaker than the erosion effect of a saturated sulphate solution, but higher than the the chlorine saturated salt solution erosion effect. Compressive strength than plain concrete erosion 200d compressive strength of 23.7% higher than the 28d compressive strength of fly ash concrete erosion 200d 30.2% higher than the 28d layer hybrid fiber reinforced concrete erosion 200d 28d 15.6%, while improving the brittleness of concrete. Figure 33 Table 37 Participation 80

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CLC: > Industrial Technology > Building Science > Building Materials > Non-metallic materials > Concrete and concrete products > Reinforced Concrete > Fiber Reinforced Concrete
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