Study on Incinerator Bottom Ash Used for Pervious Concrete
| Autor: | Lin, Jeng-Da, 林正大 |
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| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 This study used the incinerator bottom ash provided by Yin-Chen Corporation as aggregate and added the curing agent by Johnson Corporation in the making of pervious concrete. The pervious concrete specimens were built according to respective water-cement ratios W/C ranged from 0.41 to 0.47, whilst aggregate particle size was between 4.8~19.1 mm. Tamping tools were two steel rods, one with 5 cm diameter round bottom, 2 cm thickness and the other with 5#westeur024#5 cm square bottom, 2 cm thickness, were used to impact cylindrical and beam specimens respectively. The specimens were made by the same degree of impacting, and were performed the compressive strength, flexural strength, permeability coefficient, and porosity tests. Hopefully, the W/C of maximum strength concrete was found, and the requirements of permeability and water retention were satisfied as well. Test results showed that, both the 28 day maximum compressive strength fc and maximum modulus of rupture R occurred at W/C=0.42. The values were fc=64.3 kgf/cm2 and R=22.9 kgf/cm2. The mix for this specific W/C was 350 kg cement, 140 kg water, 3.5 kg curing agent and 1126 kg aggregate. Both the 7 day to 28 day compressive strength ratio fc7/fc28 and modulus of rupture ratio R7/R28 were 0.93. Therefore, the curing agent had accelerating effect in strength. The ratio of the 28 day compressive strength to modulus of rupture R/fc were between 0.22~0.47, averaged at 0.37, higher than that of normal concrete about 0.15. The permeability coefficient k values ranged between 1.3~3.4 cm/sec, larger than the criteria value 0.01 cm/sec proposed by Taiwan Architecture and Building Center. The n values ranged between 25%~35%, also larger than the criteria value 15%. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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