Techno Press

    Prof. Chang-Koon Choi(Managing Ed.)
    Dept. of Civil & Environ. Eng.
    Daejeon 305-701, Korea

    Prof. Stephen Foster (American Australian Ed.)
    Dept. of Civil & Environ. Eng.
    Univ. New South Wales
    Sydney 2052, Australia

    Prof. Andrzej Winnicki (European Ed.)
    Faculty of Civil Eng.
    Cracow Univ. Tech.
    Cracow 31-155, Poland

 Impact factor:0.936(2012)
ISSN: 1598-8198(Print), ISSN: 1598-818X(Online)
Vol 13/14 (12 issues) for 2014, Monthly
Aims and Scope
Computers and Concrete is An International Journal that focuses on the computer applications in be considered suitable for publication in the journal.
The journal covers the topics related to computational mechanics of concrete and modeling of concrete structures including
fracture mechanics
dynamic effects
reliability and safety concepts
automated design procedures
stochastic mechanics
performance under extreme conditions.
Editorial Board
Prof. Jamal A. Abdalla
American University of Sharjah
26666 Sharjah, UAE

Prof. Xuehui An
Tsinghua University
Beijing, 100084, China

Prof. Francisco Armero
University of California at Berkeley
Berkeley, CA 94720-1710, USA

Dr. Vladimir Cervenka
Cervenka Consulting ltd
150 00 Praha 5, Smichov, Czech Republic

Dr. Gary R. Consolazio
University of Florida
Gainesville, FL 32611, USA

Prof. Gregor Fischer
Technical University of Denmark
DK-2800 Kgs. Lyngby, Denmark

Prof. Matej Fischinger
University of Ljubljana, FGG
SI-1000 Ljubljana, Slovenia

Prof. Adnan Ibrahimbegovic
Ecole Normale Superieure de Cachan
94235 Cachan, France

Prof. Thomas Kang
Seoul National University
Gwanak-gu, Seoul 151-744, Korea

Prof. Kamal H. Khayat
University of Sherbrooke
Sherbrooke, QC J1K 2R1 Canada

Prof. Michael D. Kotsovos
NatĄŻl Technical University of Athens
Athens 157 73, Greece

Dr. Neven Krstulovic-Opara
HPCS Consulting
Irvine, CA 92616, USA

Prof. H. G. Kwak
Korea Adv. Inst. of Sci. & Tech.
Daejeon 305-701, Korea

Prof. A. K. H. Kwan
The University of Hong Kong
Pokfulam Road, Hong Kong

Dr. H. S. Lew
NatĄŻl Institute of Standards and Tech.
Gaithersburg, MD 20899-3460, USA

Dr. Zongjin Li
Hong Kong Univ. of Sci. & Tech.
Clear Water Bay, Kowloon, Hong Kong

Prof. Ian M. May
Heriot-Watt University
Edinburgh, EH14 4AS, UK

Prof. Gunther Meschke
Ruhr-University Bochum
D-44780 Bochum, Germany

Prof. Barzin Mobasher
Arizona State University
Tempe, AZ 85287-5306, USA

Dr. Bin Mu
California Department of Transportation
Diamond Bar, CA 91765, USA
Prof. Moncef Nehdi
The University of Western Ontario
London, Ontario, N6A 5B9, Canada

Prof. J. Oliver
Technical Univ. of Catalonia
08034 Barcelona, Spain

Dr. Josko Ozbolt
University of Stuttgart
D-70550 Stuttgart, Germany

Dr. Jerzy Pamin
Cracow University of Technology
PL-31-155, Cracow, Poland

Prof. Stan Pietruszczak
McMaster University
Hamilton, Ontario L8S4L8, Canada

Prof. Jean Marie Reynouard
National Institute of Applied Science (INSA)
Villeurbanne 69621, France

Prof. Jan G. Rots
Delft University of Technology
2600 GA Delft, The Netherlands

Prof. Kenneth Runesson
Chalmers University of Technology
SE-412 96, Goteborg, Sweden

Prof. L. J. Sluys
Delft University of Technology
2600 GA Delft, The Netherlands

Prof. Hamid Saadatmanesh
The University of Arizona
Tucson, AZ 85721, USA

Prof. Bernard Schrefler
University of Padua
9-35131 Padova, Italy

Prof. Surendra P. Shah
Northwestern University
Evanston, IL 60208-3109, USA

Prof. Paul Steinmann
University of Erlangen-Nuremberg
91058 Erlangen, Germany

Prof. Kiang Hwee Tan
NatĄŻl University of Singapore
Singapore 119260, Singapore

Prof. Tada-aki Tanabe
Nagoya University
Nagoya 464-8601, Japan

Prof. Frank J. Vecchio
University of Toronto
Toronto, M5S 1A4, Canada

Prof. H.C. Wu
Wayne State University
Detroit, MI 48202, USA

Prof. Yunping Xi
University of Colorado
Boulder, CO 80309, USA

Instructions to Authors

1. Submission of the paper
Authors are asked to submit manuscripts in PDF format electronically through the Techno-Press Manuscript Upload System (TeMUS) ( Exceptionally, the special issue papers may be directly submitted to the Guest Editor. If you have difficulties in using TeMUS, please contact us at[]. On receiving submitted papers, the system will issue the paper ID and Password to the corresponding author which may be conveniently used to check the status of submitted papers.
2. Preparation of the manuscript
General : The manuscripts should be in English and typed with single column and single line spacing on single side of A4 paper. Submitted papers will be published in three categories, i.e., 1) Regular technical paper, 2) Review papers and 3) Discussions. The first page of an article should contain; (1) a title of paper which well reflects the contents of the paper (Arial, 16pt), (2) all the name(s) and affiliations(s) of authors(s) (Arial, 12pt), (3) an abstract of 100~250 words (Times New Roman, 11pt), (4) 5-10 keywords following the abstract, and (5) footnote (personal title and email address of the corresponding author (required) and other authors' (not mandatory)). The paper should be concluded by proper conclusions which reflect the findings in the paper. The normal length of the technical paper should be about 14-20 journal pages. There will be no page charges and no other fees unless the author wishes arrangements to provide an open access to his article. Authors are advised to read the details in the Appendix A for guide and Appendix B for a template of the instructions to authors for the format of the first page of the paper.
Tables and figures : Tables and figures should be consecutively numbered and have short titles. They should be referred to in the text as following examples (e.g., Fig. 1(a), Figs. 1 and 2, Figs. 1(a)-(d) / Table 1, Tables 1-2), etc. Tables should have borders (1/2pt plane line) with the captions right before the table. Figures should be properly located in the text as an editable image file (.jpg) with captions on the lower cell. All of the original figures are required at the end of the manuscript for reference in editing.
Units and mathematical expressions : It is desirable that units of measurements and abbreviations should follow the System Internationale (SI) except where the other unit system is more suitable. The numbers identifying the displayed mathematical expression should be placed in the parentheses and referred to in the text as following examples (e.g., Eq. (1), Eqs. (1)-(2)). Mathematical expressions must be inserted as an object (set as Microsoft Equations 3.0) for Microsoft Word 2007 and after versions. Image-copied text or equations are not acceptable unless they are editable. The raised and lowered fonts cannot be used for superscription and subscription.
References : A list of references which reflect the current state of technology in the field locates after conclusions of the paper. For details to prepare the list of references and cite them in the text, authors are advised to follow the introduction and the sample list in the Appendix A of the instruction.
3. Review
All the submitted papers will undergo a peer-review process, and those papers positively recommended by at least two expert reviewers will be finally accepted for publication in the Techno-Press Journals or after any required modifications are made.
4. Proofs
Proofs will be sent to the corresponding author to correct any typesetting errors. Alterations to the original manuscript will not be accepted at this stage. Proofs should be returned within 48 hours of receipt.
5. Copyright
Submission of an article to a Techno-Press Journal implies that it presents the original and unpublished work, and not under consideration for publication elsewhere. On acceptance of the submitted manuscript, it is implied that the copyright thereof is transferred to the Techno-Press. The Transfer of Copyright Agreement may also be submitted.
6. Ethics
For the policies on the research and publication ethics not stated in this instructions, International standards for editors and authors ( can be applied.

*Appendix A. Authors' Guide
*Appendix B. Template
*Appendix C. Index
Abstracted/Indexed in

Science Citation Index Expanded (SciSearch)
ISI Alerting Services
Materials Science Citation Index
CompuMath Citation Index
International Civil Engineering Abstracts
Shock and Vibration Digest
Sample Issue
Volume 9, Number 1, January 2012
  • Size-effect of fracture parameters for crack propagation in concrete: a comparative study
    Shailendra Kumar and S.V. Barai
    Abstract; Full Text (2247K)

The size-effect study of various fracture parameters obtained from two parameter fracture model, effective crack model, double-K fracture model and double-G fracture model is presented in the paper. Fictitious crack model (FCM) for three-point bend test geometry for cracked concrete beam of laboratory size range 100-400 mm is developed and the different fracture parameters from size effect model, effective crack model, double-K fracture model and double-G fracture model are evaluated using the input data obtained from FCM. In addition, the fracture parameters of two parameter fracture model are obtained using the mathematical coefficients available in literature. From the study it is concluded that the fracture parameters obtained from various nonlinear fracture models including the double-K and double-G fracture models are influenced by the specimen size. These fracture parameters maintain some definite interrelationship depending upon the specimen size and relative size of initial notch length.

Key Words
concrete fracture; fracture process zone; cohesive stress distribution; nonlinear fracture models; size-effect; three-point bending test.

Shailendra Kumar: Department of Civil Engineering, National Institute of Technology, Jamshedpur-831 014, India; Department of Civil Engineering, Indian Institute of Technology, Kharagpur-721 302, India S.V. Barai: Department of Civil Engineering, Indian Institute of Technology, Kharagpur-721 302, India

  • A numerical study on the damage of projectile impact on concrete targets
    Gang Lu, Xibing Li and Kejin Wang
    Abstract; Full Text (2537K)

This paper presents the numerical simulation of the rigid 12.6 mm diameter kinetic energy ogive-nosed projectile impact on plain and fiber reinforced concrete (FRC) targets with compressive strengths from 45 to 235 MPa, using a three-dimensional finite element code LS-DYNA. A combined dynamic constitutive model, describing the compressive and tensile damage of concrete, is implemented. A modified Johnson_Holmquist_Cook (MJHC) constitutive relationship and damage model are incorporated to simulate the concrete behavior under compression. A tensile damage model is added to the MJHC model to analyze the dynamic fracture behavior of concrete in tension, due to blast loading. As a consequence, the impact damage in targets made of plain and fiber reinforced concrete with same matrix material under same impact velocities (650 m/s) are obtained. Moreover, the damage distribution of concrete after penetration is procured to compare with the experimental results. Numerical simulations provide a reasonable prediction on concrete damage in both compression and tension.

Key Words
concrete; material model; numerical simulation; projectile penetration.

Gang Lu: Shaw Stone & Webster Nuclear, Stoughton, MA, USA 02072 Xibing Li: School of Resources and Safety Engineering, Central South University, Changsha, China 410083 Kejin Wang: National Concrete Pavement Center, Iowa State University, Ames, IA, USA 50010

  • Determination of representative volume element in concrete under tensile deformation
    L. Skarzynski and J. Tejchman
    Abstract; Full Text (11978K)

The 2D representative volume element (RVE) for softening quasi-brittle materials like concrete is determined. Two alternative methods are presented to determine a size of RVE in concrete subjected to uniaxial tension by taking into account strain localization. Concrete is described as a heterogeneous threephase material composed of aggregate, cement matrix and bond. The plane strain FE calculations of strain localization at meso-scale are carried out with an isotropic damage model with non-local softening.

Key Words
characteristic length; concrete; heterogeneous material; representative volume element (RVE); damage mechanics; softening; strain localization.

L. Skarzynski and J. Tejchman : Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gdansk, Poland

  • Fracture process of rubberized concrete by fictitious crack model and AE monitoring
    Chao Wang, Yamei Zhang and Zhe Zhao
    Abstract; Full Text (5866K)

According to the results of three-point bending tests of rubberized concrete and plain concrete, the parameters such as total fracture energy (GF), initial fracture energy (Gf), and tensile strength (ft) are obtained for concrete material. Using ABAQUS software and a bilinear softening fictitious crack model, the crack propagation process was simulated and compared to the experimental results. It is found that the increase of AE hit count has a similar trend with the increase of energy dissipation in FEM simulation. For two types of concretes, both experimental results and numerical simulation indicate that the rubberized concrete has a better fracture resistance.

Key Words
concrete; fracture; acoustic emission; fictitious model.

Chao Wang: School of mechanics and materials, Hohai University, Nanjing, China 210098; Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing, China, 211189 Yamei Zhang and Zhe Zhao: Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing, China, 211189

  • Evaluation of behavior and strength of prestressed concrete deep beams using nonlinear analysis
    T.H. Kim, J.H. Cheon and H.M. Shin
    Abstract; Full Text (4948K)

The purpose of this study is to evaluate the behavior and strength of prestressed concrete deep beams using nonlinear analysis. By using a sophisticated nonlinear finite element analysis program, the accuracy and objectivity of the assessment process can be enhanced. A computer program, the RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), was used for the analysis of reinforced concrete structures. Tensile, compressive and shear models of cracked concrete and models of reinforcing and prestressing steel were used to account for the material nonlinearity of prestressed concrete. The smeared crack approach was incorporated. A bonded or unbonded prestressing bar element is used based on the finite element method, which can represent the interaction between the prestressing bars and concrete of a prestressed concrete member. The proposed numerical method for the evaluation of behavior and strength of prestressed concrete deep beams is verified by comparing its results with reliable experimental results.

Key Words
prestressed concrete; deep beams; nonlinear analysis; material nonlinearity; bonded or unbonded prestressing bar element.

T.H. Kim: Construction Technology R&D Center, Samsung C&T Corporation, 1321-20 Seocho2-dong, Seocho-gu, Seoul 137-956, Korea J.H. Cheon and H.M. Shin: Department of Civil and Environmental Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon-si, Gyeonggi-do 440-746, Korea

Table of Contents
  • 2014  Volume 14      No. 1      No.2    No.3    No.4    No.5
  • 2014  Volume 13      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2013  Volume 12      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2013  Volume 11      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2012  Volume 10      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2012  Volume 9      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2011  Volume 8      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2010  Volume 7      No. 1      No.2    No.3    No.4 _5    No.4    No.5    No.6
  • 2009  Volume 6      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2008  Volume 5      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2007  Volume 4      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2006  Volume 3      No. 1      No.2 _3    No.4    No.5    No.6
  • 2005  Volume 2      No. 1      No.2    No.3    No.4    No.5    No.6
  • 2004  Volume 1      No. 1      No.2    No.3    No.4 _5    No.0
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