STRESS –STRAIN DIAGRAM OF SELF-CONSOLIDATING CONCRETE SUBJECTED TO CHEMICAL ATTACK
DOI:
https://doi.org/10.31272/jeasd.26.5.10Keywords:
SCC, self-compacting concrete, sulfuric acid, hybrid fiber, stress strain diagram, compressive strength, mass lossAbstract
Self-consolidating concrete (SCC) is increasingly used in a number of concrete applications, some of which are highly susceptible to attack by sulfuric acid. This work aimed to study the resistance of a wide range of different SCCs to sulfuric attack. The main variables studied included binder material type (highly reactive materials), limestone powder, and hybrid fibers in this work, compaction, L-box, and V-hopper were performed for the new mixtures. In this study, the specimens were immersed in a solution of sulfuric acid at a concentration (0.5%) for up to 289 days after normal curing for 28 days. Laboratory results show that concrete containing pozzolanic material has reduced mechanical properties compared to a mixture containing only limestone powder. The study also showed that there was an improvement in the resistance of concrete to acid solutions when hybrid fibers were added to the concrete mix. From the stress graph, the strain at given axial stress will be less than once the failure becomes more severe, it will become less rigid than immersing the specimen for six months.
References
Fan. Y.F., Hu, Z.Q., and Luan, H.Y., ''Deterioration of tensile behavior of concrete exposed to artificial acid rain environment '' Interaction and Multiscale Mechanics, Vol. 5, No. 1 (2012) 41-56
Zhang, Y.,., Fan, Y., and Li, H., '' Influence of Simulated Acid Rain Corrosion on the Uniaxial Tensile Mechanical Properties of Concrete '' Hindawi Publishing Corporation , International Journal of Corrosion ,Volume 2012 pp: 1-7
Hewayde, E., Nehdi, M. , Allouche, E., and Nakhla, G., '' Effect of Mixture Design Parameters and Wetting-Drying Cycles on Resistance of Concrete to Sulfuric Acid Attack'' journal of materials in civil engineering , ASCE , February, 2007,19 pp:155-163.
Joorabchian, S. M., '' Durability of concrete exposed to sulfuric acid attack '' Theses, Ryerson University ,Canada, 1-1-2010 pp 1-116
Salhi M.,,Alex L.,Ghrici M.,Christophe B.,,Boubekeur T.,'' Effect of acids and sulphates on the durability of self-compacting concretes '' The First International Conference on Materials, Environment, Mechanical and Industrial Systems, 29-30 June 2019, University of DJELFA, Algeria pp1-8
Özlem, C., Jan, E., Dimitri, F., Gert, H., Lucie, V., Dionys, V. G., Bram, D., John, V. and Geert, S., '' Microstructural Changes in Self-Compacting Concrete by Sulphuric Acid Attack Chemistry of Cement pages:436 July 2011
Sara I., Laurence D., Dirk Q., Maria C., A.,Kristina V., and Nele D., ''Severe Sulfuric Acid Attack on Self-Compacting Concrete with Granulometrically Optimized Blast-Furnace Slag-Comparison of Different Test Methods'' Materials 2020, 13, pp 1-22
Iraqi Specification, No. 45/1984., "cement''
ASTM C1240- 03, '' Standard Specification For The Use of Silica Fume as a Mineral Admixture in Hydraulic Cement Concrete , Mortar and Grout '' , Vol. 4.2 , 2003 , 6p.
ASTM C618-03, “Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete”, Annual Book of ASTM Standard, Vol. 04-02, February 2003, p. 3.
EFNARC, “Specification and Guidelines for Self-Compacting Concrete”, www.efnarce.org , February 2002, pp.32.
The self-compacting concrete European project group, ''The European Guidelines for Self-Compacting Concrete'' May 2005, pp 43-56
Senhadji, Y., Escadeillas, G., Mouli, M., Khelafi, H. and Benosman, ''Influence of natural pozzolan, silica fume and limestone fine on strength, acid resistance and microstructure of mortar'' Powder Technology 254 (2014) 314–323
Mesdah, H., A., Lachemi, M. and Aϊtcin, P.,P.,“Determination of Elastic Properties of High-Performance Concrete at Early Ages”, ACI Material Journal, V. 99, No. 1, January – February 2002, PP.37-41
ASTM C597-02, '' standard test method for pulse velocity through concrete '' Annual Book of ASTM Standard, Vol. 04-02, 2002.
Holschemacher, K. and Klug, Y., “A Database for the Evaluation of Hardened of SCC”, LACER No. 7, 2002, PP.123-134
Yaoa, W., Lib, J., and Wua, K., ''Mechanical properties of hybrid fiber – reinforced concrete at low fiber volume fraction '' Cement and Concrete Research 33 (2003) 27-30
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