| Summary: | 碩士 === 國立雲林科技大學 === 營建工程系碩士班 === 89 === The purpose of this research is using the waste fluid catalytic cracking catalysts, widely used in oil refinery and petrochemical industries, adding in high performance concrete (HPC) to analysis to effect of durability in concrete and the microstructure in paste.
The waste catalysts are substituting the cement in concrete and paste. The ratios of waste catalysts substitute cement are 5%, 10%, 15%, 20%, and 25%. The test methods in concrete include: Compressive strength, abrasion properties, fast chloride permeability, carbonation, and thaw-freeze resistance. The test method in cement mortar includes: AAR. The test methods in cement paste include: SEM, X-Ray diffraction pattern, Nuclear Magnetic Resonance (NMR), and MIP.
The concrete result shows: using un-wetting catalysts in concrete can improve the durability except the thaw-freeze resistance. Using 10% un-wetting waste catalyst substitute cement in concrete, the compressive strength is higher than 0% concrete in 90 days ages. Using 15% un-wetting waste catalyst substitute cement in concrete, the chloride permeability is lower than 0% in all ages. Using 10% un-wetting waste catalyst substitute cement in concrete, the anti-carbonation ability is better than 0% in later ages. Using 15% un-wetting waste catalyst substitute cement in concrete, the abrasion properties are better than 0%. The AAR mortar test result shows: there should no alkali-aggregate reaction when using waste catalyst in concrete.
The microstructure test shows: the waste catalysts have pozzolan reaction in paste in SEM test. The X-Ray diffraction test shows the waste catalyst consume CH in pozzolan reaction. The MIP test shows the un-wetting waste catalyst substitute cement can reduce the pore volume in cement paste and improve the durability.
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