Volume 1, Issue 2 (11-2016)                   NMCE 2016, 1(2): 1-8 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mirzabozorg H, Lamea M. Developing numerical algorithm and a new program for simulating alkali aggregate reaction in mass concrete. NMCE 2016; 1 (2) :1-8
URL: http://nmce.kntu.ac.ir/article-1-29-en.html
1- Associate Professor ,Civil Engineering Department,K.N.Toosi University of Technology, Tehran, Iran
2- PhD Student,Email: mo.l.civil@gmail.com
Abstract:   (2273 Views)
Nowadays, Alkali Aggregate Reaction is considered as one of the most dangerous weak points of concrete and its occurrence has been widely reported in various structures. In the current study, a program is developed for predicting and examining the effects of mentioned reaction on the three-dimensional analysis of concrete structures such as arch dams. In this regard, a program provided for dam analysis is utilized applying necessary modifications on its flowchart to represent the reaction effects on the analysis procedure. The model utilized for simulating AAR is one of the comprehensive and newest models among the ones presented in various references. The deterioration of elasticity module due to the reaction is also included in the analyses, in addition to modeling concrete expansion with an excess load vector. The analyses conducted for considering the developed program capabilities indicates acceptable results so that its stability and accuracy are considered enough for long term prediction of performance of AAR-affected structures(especially concrete dams) during their service life.
Full-Text [PDF 691 kb]   (868 Downloads)    
Type of Study: Research | Subject: Special
Received: 2014/03/13 | Revised: 2014/09/4 | Accepted: 2014/10/18 | ePublished ahead of print: 2014/10/28

References
1. [1] Saouma, V. Xi, Yunping. "Literature Review of Alkali Aggregate Reaction in Concrete Dams", under contract from FOWG, Report CU/SA-XI-2004/001, 2004
2. [2] Leger, P., Cote, P., Tinawi, R" ,.Finite Element Analysis of Concrete Swelling due to Alkali-Aggregate Reaction In Dams"., Computers and Structures, Vol. 125, No. 4, pp. 601-611,1996 [DOI:10.1016/0045-7949(95)00440-8]
3. [3] Mirzabozorg, H., Jalalzadeh, B., Kianoush, R."Damage Mechanics Approach and Modeling Non-uiniform Cracking within Finite Elements for Safety Evaluation of Concrete Dams in 3D Space", Structural Engineering Mechanics (SEM), Vol. 33, No. 1, 2009. [DOI:10.12989/sem.2009.33.1.031]
4. [4] Mirzabozorg, H., Ghaemian, M."NSAD-DRI: Nonlinear Seismic Analysis of Dams including Dam Reservoir Interaction- User's Manual", KN-Toosi University of Technology, Tehran, Iran, 2006.
5. [5] Saouma, V., perotti, L. "Constitutive Model for Alkali- Aggregate Reactions", ACI Materials Journal-technical paper, Title no. 103-M22, V. 103, No. 3, May/June2006 [DOI:10.14359/15853]
6. [6] Akhavan, A. " Seismic Safety Evaluation of Concrete Arch Dams", Msc Thesis in Hydraulic Structural Engineering, Sharif University of Technology (SUT), Tehran, Iran, 2001
7. [7] Saouma, V., perotti, L".Alkali Aggregate Reactions in Dams; Stress analysis and Long Term prediction", ASDSO Dam Safety Conf., New Orleans, Sep. 2005
8. [8] Saouma, V., perotti, L., Shimpo, T ".Stress Analysis of Concrete Structures Subjected to Alkali-Aggregate Reactions", ACI Structural Journal-Technical paper, Title no. 104-S50, V. 104, No. 5, Sep/Oct. 2007 [DOI:10.14359/18855]

Add your comments about this article : Your username or Email:
CAPTCHA