Influence of Co-Polymer Dispersion Additives onto Shrinkage Strains for Cementitous Mortars and Concretes

Abstract:

In the paper there is presented the influence of different types of co-polymer dispersion additives onto the magnitude of shrinkage and strength properties of cement composites. The effect of application of such additives was compared and confronted with the action of widely used classical admixture reducing shrinkage based on multi-molecular alcohol (propylene alcohol). As a result of conducted tests the significant reduction in shrinkage strains and increase in bending strength was observed due to the application of co-polymer dispersion with the amount of at least 5% of the cement mass. Reduction of shrinkage and improvement of serviceability properties to great extent prejudge the technical attractiveness of co-polymer and cement materials for the cases of concrete structures repairs and constructing industrial floors without joints.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 1097-1101
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.1097
• Online since: July 2011
• Authors: Maciej Gruszczyński
• Keywords: Anti-Shrinkage Admixture, Concrete Shrinkage, Co-Polymer Dispersion Additive, Polymer Modified Concretes

References

[1] Ohama Y., Hashimoto H. Drying shrinkage and compressive creep of polymer-modified concrete. Semento-Gijutsu-Nempo no. 32, pp.308-311 (1978)

[2] H. Schorn, S. Gieler-Breßmer, M. Raupach:. Repair. Industrial Floors, RILEM TC 184-IFE: State-of-the-Art Report, Chapter 5 (2006)

[3] A. Kwiecień, M. Gruszczyński, B. Zając: Tests of flexible polymer joints repairing of polymer modified concretes. 13th Int. Congress on Polymers in Concrete ICPIC 2010, p.559 – 566

DOI: 10.4028/www.scientific.net/kem.466.225

[4] W. Wu, T. Chen, W. Zang, R. Chen: Study of the causes of crack in concrete pavement of airfield. RILEM Proceedings PRO 32, Advances in concrete and structures, ICACS 2003, Xuzhou, (2003)

[5] Lösching P.: Schwindreduzierer für Zementfließestrich, Zement+Beton Sonderheft (2002)

[6] Wittmann F., Trausch L.: Hygromechanisches Verhalten von zementgebundenen Werkstoffen. ETH Zürich (1999)

[7] Schorn H., Butler M. Microcrack propagation observed in ESEM. SEM Annual Conference, Milwaukee, USA (2002)

[8] EN 480-1:2006, Admixtures for concrete, mortar and grout. Test methods. Reference concrete and reference mortar for testing

DOI: 10.3403/01306367

[9] EN 196-1:2005, Methods of testing cement. Determination of strength