語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Modeling of concrete cracking due to...
~
Aligizaki, Kalliopi K.
FindBook
Google Book
Amazon
博客來
Modeling of concrete cracking due to corrosion of embedded reinforcement.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Modeling of concrete cracking due to corrosion of embedded reinforcement./
作者:
Aligizaki, Kalliopi K.
面頁冊數:
166 p.
附註:
Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3425.
Contained By:
Dissertation Abstracts International60-07B.
標題:
Engineering, Civil. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9937915
ISBN:
9780599392113
Modeling of concrete cracking due to corrosion of embedded reinforcement.
Aligizaki, Kalliopi K.
Modeling of concrete cracking due to corrosion of embedded reinforcement.
- 166 p.
Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3425.
Thesis (Ph.D.)--The Pennsylvania State University, 1999.
Corrosion of steel in concrete continues freely after concrete cracks, because concrete does not provide even physical protection to steel any more. In this Thesis, the effects of concrete quality and design parameters on concrete cracking due to corrosion of embedded reinforcement are examined. The parameters tested are concrete strength, thickness of concrete cover, diameter of steel bar, crack width at the concrete surface, the presence of polypropylene fibers, and corrosion occurring at a limited length. Four air-entrained concrete mixtures were proportioned having different water-cement ratios (0.40, 0.45, 0.50 and 0.55). The control mixture was selected according to the classifications used by the Eurocode and to represent concrete used in a marine environment. An additional mixture was proportioned containing polypropylene fibers. A total of 148 reinforced concrete specimens (250 x 140 x 140 mm) containing one ribbed steel bar were prepared in the laboratory. Corrosion of the reinforcing steel bars was accelerated by two ways: (a) by adding NaCl in the initial concrete mixtures in an amount of 3.7% by mass of cement, and (b) by anodically charging the steel bar with a current density of 500 mA/m2. Different electrochemical tests were carried out before anodically charging the steel bars and after concrete cracked due to corrosion of embedded reinforcement, in order to determine various electrochemical parameters. After the concrete specimens cracked, the average crack width at the concrete surface and the iron mass loss were determined. A theoretical model is proposed and is used as the basis for developing the final analytical equation. A polynomial regression analysis was carried out in order to relate the parameters tested in this study to the amount of oxides needed to cause cracking of the concrete cover. For the parameters examined and the assumptions made, the analysis indicates that the model proposed explains 30% of the variation of the iron mass loss needed to cause cracking in concrete. The model proposed in this study is also compared to the models proposed in the past by other researchers.
ISBN: 9780599392113Subjects--Topical Terms:
783781
Engineering, Civil.
Modeling of concrete cracking due to corrosion of embedded reinforcement.
LDR
:03128nmm 2200301 4500
001
1833350
005
20071004071616.5
008
130610s1999 eng d
020
$a
9780599392113
035
$a
(UMI)AAI9937915
035
$a
AAI9937915
040
$a
UMI
$c
UMI
100
1
$a
Aligizaki, Kalliopi K.
$3
1922055
245
1 0
$a
Modeling of concrete cracking due to corrosion of embedded reinforcement.
300
$a
166 p.
500
$a
Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3425.
500
$a
Advisers: Philip D. Cady; Digby D. Macdonald.
502
$a
Thesis (Ph.D.)--The Pennsylvania State University, 1999.
520
$a
Corrosion of steel in concrete continues freely after concrete cracks, because concrete does not provide even physical protection to steel any more. In this Thesis, the effects of concrete quality and design parameters on concrete cracking due to corrosion of embedded reinforcement are examined. The parameters tested are concrete strength, thickness of concrete cover, diameter of steel bar, crack width at the concrete surface, the presence of polypropylene fibers, and corrosion occurring at a limited length. Four air-entrained concrete mixtures were proportioned having different water-cement ratios (0.40, 0.45, 0.50 and 0.55). The control mixture was selected according to the classifications used by the Eurocode and to represent concrete used in a marine environment. An additional mixture was proportioned containing polypropylene fibers. A total of 148 reinforced concrete specimens (250 x 140 x 140 mm) containing one ribbed steel bar were prepared in the laboratory. Corrosion of the reinforcing steel bars was accelerated by two ways: (a) by adding NaCl in the initial concrete mixtures in an amount of 3.7% by mass of cement, and (b) by anodically charging the steel bar with a current density of 500 mA/m2. Different electrochemical tests were carried out before anodically charging the steel bars and after concrete cracked due to corrosion of embedded reinforcement, in order to determine various electrochemical parameters. After the concrete specimens cracked, the average crack width at the concrete surface and the iron mass loss were determined. A theoretical model is proposed and is used as the basis for developing the final analytical equation. A polynomial regression analysis was carried out in order to relate the parameters tested in this study to the amount of oxides needed to cause cracking of the concrete cover. For the parameters examined and the assumptions made, the analysis indicates that the model proposed explains 30% of the variation of the iron mass loss needed to cause cracking in concrete. The model proposed in this study is also compared to the models proposed in the past by other researchers.
590
$a
School code: 0176.
650
4
$a
Engineering, Civil.
$3
783781
650
4
$a
Engineering, Metallurgy.
$3
1023648
650
4
$a
Engineering, Materials Science.
$3
1017759
690
$a
0543
690
$a
0743
690
$a
0794
710
2 0
$a
The Pennsylvania State University.
$3
699896
773
0
$t
Dissertation Abstracts International
$g
60-07B.
790
1 0
$a
Cady, Philip D.,
$e
advisor
790
1 0
$a
Macdonald, Digby D.,
$e
advisor
790
$a
0176
791
$a
Ph.D.
792
$a
1999
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9937915
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9224214
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入