Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/74707
標題: 以飛灰及爐石改善再生混凝土之工程性質
作者: 彭獻生
陳豪吉
顏聰
關鍵字: 再生混凝土;飛灰;爐石
出版社: 國立中興大學工學院;Airiti Press Inc.
Project: 興大工程學刊, Volume 14, Issue 3, Page(s) 211-218.
摘要: 
再生混凝土之抗壓強度與工作性一般均較並較普通混凝土差,因而會影像其在工程上之應用性。有鑑於飛灰與石等卜作嵐材料應用於混凝士中,有變善工作性且增加長期抗壓強度之效果,本文嘗試以固定水膠比,以不同含量之飛灰、爐石及兩者混合取代水泥之百分比,分別拌製再生混凝土,探討基對再生混凝土或質之影響,及飛灰與石之最佳取代量與取代比例,以做為工程應用之參考。試驗結果顯示,飛灰取代水泥用量30%以下與爐石取代水泥用量50%以下時,均可明顯提昇再生混凝土長齡期之抗壓強度以及彈性模數,水到與普通混凝土相當之水準。且再生混凝土工作性不佳及坍度損失較大之缺點,亦可獲得大幅改善。因此,使用卜作嵐材料於再生混凝土中,可有效提高其在工程上之應用價值。

Due to lower compressive strength and worse workability of recycled aggregate concrete (RAC)m it will be limited in the application of construction. Pozzolans such as fly ash and slag could increase compressive strength and workability when it applies on concrete. In this research the recycled aggregate concretes were produced by using the same water to binder ratio and different replacing percentage of fly ash and slang to cement. The engineering properties of recycled aggregate concrete were investigated to determine to optimum replacing amount and rate of fly ash and lag. Test results show that it could increase the compressive strength and the elastic modulus of RAC of reach the same level with natural aggregate concrete for using below 30% of fly ash or below 50% of replacement. Moreover, the defects of inferior workability and the higher sump loss of recycled aggregate concrete could be greatly improved. So, it could enhance the application of recycled aggregate concrete in construction by using pozzolans to replace parts of cement.
URI: http://hdl.handle.net/11455/74707
ISSN: 1017-4397
Appears in Collections:第14卷 第3期
工學院

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