Mechanical and Chemical Characteristics of Bottom Ash Aggregates Cold-bonded with Fly Ash

被引：4

作者：

Kim, Hyeong-Ki ^{[1
]}

Ha, Kyung-Ae ^{[2
]}

Jang, Jeong-Gook ^{[2
]}

Lee, Haeng-Ki ^{[2
]}

机构：

[1] Chosun Univ, Sch Architecture, Gwangju 501759, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Daejeon 305701, South Korea

来源：

JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2014年 / 51卷 / 02期

关键词：

Fly ash; Agglomeration/agglomerates; Cements; Mechanical properties; Chemical properties;

D O I：

10.4191/kcers.2014.51.2.57

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Bottom ash can be used as pelletizing seeds in unsintered artificial lightweight aggregates, so it can be called as 'cold-bonded aggregates'. In the present study, the mechanical and chemical characteristics of bottom ash aggregates cold-bonded with fly ash were investigated. The crushing strength and the water transfer characteristic of the aggregates, which may affect the strength gain of the concrete, were evaluated. Moreover, the degree of hydration and the hydration products of the aggregates were analyzed to verify the chemical stability of the aggregates. Compared to commercialized artificial lightweight aggregates manufactured by sintering process, cold-bonded fly/bottom ash aggregates had similar levels of water transfer characteristics, while having lower strengths. The calcium hydroxide in the aggregates was almost completely consumed after 28 days moist curing.

引用

页码：57 / 63

页数：7

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