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Properties of flowable self-compacting slurry using quarry by-products and ponded CCPs
This paper reports the properties of two series of flowable self-compacting slurry. In Series l, five mixtures of flowable slurry were made using ponded coal-combustion fly ash and quarry screenings (fine crushed sand). In Series 2, six mixtures of flowable slurry were made, the first five mixtures using the ponded coal-ash and natural sand, and the final one mixture using Class C fly ash and natural sand. Ash and quarry-screenings contents of the mixtures are expressed as percentages of the sum of the quantities of the ash and aggregate. For Series 1 flowable-slurry mixtures, ponded-ash content was 100, 67, 53, 35, and 0 percent, and quarry-screenings content was 0, 33, 47, 65, and 100 percent, respectively. In Series 2 flowable-slurry mixtures, ash content was 100, 81, 60, 40, 20, and 4 percent, and sand content was 0, 19, 40, 60, 80, and 96 percent, respectively. For both series of flowable-slurry mixtures, tests were performed for flow, density, settlement, compressive strength, and permeability. Ambient air and slurry temperatures were also recorded. Compressive strength of both Series 1 and Series 2 mixtures increased with age. Compressive strength of Series 1 mixture was higher than Series 2 mixtures. It was also observed that the permeability of flowable-slurry mixtures decreased with increase in age due to improvement in microstructure and increase in strength of the flowable-slurry mixtures. Mixtures containing quarry screenings were also less permeable.
Properties of flowable self-compacting slurry using quarry by-products and ponded CCPs
This paper reports the properties of two series of flowable self-compacting slurry. In Series l, five mixtures of flowable slurry were made using ponded coal-combustion fly ash and quarry screenings (fine crushed sand). In Series 2, six mixtures of flowable slurry were made, the first five mixtures using the ponded coal-ash and natural sand, and the final one mixture using Class C fly ash and natural sand. Ash and quarry-screenings contents of the mixtures are expressed as percentages of the sum of the quantities of the ash and aggregate. For Series 1 flowable-slurry mixtures, ponded-ash content was 100, 67, 53, 35, and 0 percent, and quarry-screenings content was 0, 33, 47, 65, and 100 percent, respectively. In Series 2 flowable-slurry mixtures, ash content was 100, 81, 60, 40, 20, and 4 percent, and sand content was 0, 19, 40, 60, 80, and 96 percent, respectively. For both series of flowable-slurry mixtures, tests were performed for flow, density, settlement, compressive strength, and permeability. Ambient air and slurry temperatures were also recorded. Compressive strength of both Series 1 and Series 2 mixtures increased with age. Compressive strength of Series 1 mixture was higher than Series 2 mixtures. It was also observed that the permeability of flowable-slurry mixtures decreased with increase in age due to improvement in microstructure and increase in strength of the flowable-slurry mixtures. Mixtures containing quarry screenings were also less permeable.
Properties of flowable self-compacting slurry using quarry by-products and ponded CCPs
Naik, T.R. (author) / Kraus, R.N. (author) / Chun, Y. (author) / Siddique, R. (author) / Botha, F.D. (author)
2004
15 Seiten, 6 Bilder, 4 Tabellen, 18 Quellen
Conference paper
English
SP-221-32: Properties of Flowable Self-Compacting Slurry Using Quarry By-Products and Ponded CCPs
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