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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43021

Title: 水淬高爐爐碴粉細度及用量對混凝土性質影響之研究
Effect of Fineness and Dosage of Ground Granulated Blast-Furnace Slag on the Properties of Concrete
Authors: Tsou,Kuo-Chung
鄒國忠
Contributors: NTOU:Department of Harbor and River Engineering
國立臺灣海洋大學:河海工程學系
Keywords: 水淬高爐爐碴粉;抗壓強度;細度;用量
granulated blast-furnace slag;compressive strength;fineness;dosage
Date: 2016
Issue Date: 2017-05-24T08:40:39Z
Abstract: 本研究旨在探討使用水淬高爐爐碴粉對於混凝土力學性及耐久性之影響,試驗變數包括水淬高爐爐碴粉細度100級(420 m2/kg)與120級(520 m2/kg)及用量(40%, 50%及60%),固定水膠比0.485,製作試體進行試驗,探討水淬高爐爐碴粉細度及用量對混凝土性質之影響。水淬高爐爐碴粉細度越高,不論取代用量為何均顯示其早期強度發展越好。如水淬高爐爐碴粉細度固定,取代用量為50%之混凝土強度發展會比取代用量為40%及60%者優異。但與控制組比較發展速度較緩慢,此或因能進行早期水化反應的水泥較少。水淬高爐爐碴粉替代水泥,早期強度發展會比較低。混凝土晚期強度,水化反應趨於穩定。水淬高爐爐碴粉試體14天抗壓強度控制組試體抗壓強度漸漸趨近。水淬高爐爐碴粉120級(520 m2/kg)試體 7天、14天強度成長比,都優於水淬高爐爐碴粉100級 (420 m2/kg)試體,此由於細度高之水淬高爐爐碴粉的早期水化反應較為明顯,亦即細度越高之水淬高爐爐碴粉其活性越好。抗壓強度與吸水率、滲透率及耐磨耗之間有關聯性。水淬高爐爐碴粉細度與使用量愈高,混凝土內部孔隙結構越緻密,吸水率、滲透率及磨耗相對較低;水淬高爐爐碴粉細度與用量明顯影響混凝土的強度與耐久性。
The main purpose of this research is to investigate the influence of ground granulated blast-furnace slag (ggbs) on the properties of concrete. Testing variables included fineness (420 m2/kg, 520 m2/kg) and dosage (40%, 50% and 60%) of ggbs. The water-cementitious ratio was set as a constant of 0.485 for the specimens. Teating results indicate that fineness affects the development of early strength regardless of the dosage. For a given fineness of ggbs, specimens with 50% dosage have highest strength than other specimens with 40% or 60% dosage. It was also found that the strength developments of ggbs specimens were slower than those of control specimens due to less hydrated products generated at early age. However, the strength of ggbs specimens develpop fast after 28 days. Greater fineness of ggbs improves early strength (7 days and 14 days) specimen which demonstrating the effect of fineness on the hydration rate. A good relationship exists between compressive strength, water absorption and abrasion resistance. Higher dosage of ggbs in the specimen has lower water absorption, permeability and higher abrasion resistance. The effect of fineness and dosage of ggbs on the strength and durability of concrete is prominent.
URI: http://ethesys.lib.ntou.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=G0040345024.id
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43021
Appears in Collections:[河海工程學系] 博碩士論文

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