Study on the Expansion of a Cement-Based System Containing Sap Polymer and Supplementary Cementing Materials
- 1 Instituto de Ingeniería, Coordinación de Ingeniería Estructural, Universidad Nacional Autónoma de Móxico, Circuito Escolar s/n, Cd. Universitaria, Coyoacán, Móxico D. F., Mexico
- 2 Instituto de Ingeniería, Coordinación de Ingeniería Estructural, Universidad Nacional Autónoma de Móxico, Circuito Escolar s/n, Cd. Universitaria, Coyoacán, Móxico D. F., Mexico
Abstract
In this paper, the addition of admixed superabsorbent polymer (SAP) improved the microstructure and durability-related properties in a cement-based system with supplementary materials. This is an important issue in real construction projects when good durability properties are required. This study investigates the effect of SAP on the systems using cement replacement by fly ash and silica fume considering the strength properties and durability properties of paste under sulfate attack of cement-based system. The replacement considered in the study was of 10% silica fume and 20% fly ash in each case, the dosage of SAP was 0.25% of the total amount of cementitious material. The results showed that the addition of SAP in the cement-based system improved the compressive strength and reduced expansion to sulfate attack. Scanning electron micrographs showed that utilization of fly ash with silica fume and silica fume with SAP resulted in a much denser microstructure, thereby, leading to an increase in compressive strength and lower expansion under sulfate attack.
- Santhanam, M., Cohen, M.D. and Olek, J. (2001) Sulfate Attack Research—Whiter Now? Cement and Concrete Research, 31, 845-851. https://doi.org/10.1016/S0008-8846(01)00510-5
- Ouyang, C., Nanni, A. and Chang, W.F. (1988) Internal and External Sources of Sulfate Ions in Portland Cement Mortar: Two Types of Chemical Attack. Cement and Concrete Research, 18, 699-709. https://doi.org/10.1016/0008-8846(88)90092-0
- Donatello, S., Palomo, A. and Fernández-Jimónez, A. (2013) Durability of very High Volume Fly Ash Cement Pastes and Mortars in Aggressive Solutions. Cement and Concrete Composites, 38, 12-20. https://doi.org/10.1016/j.cemconcomp.2013.03.001
- Ferraris, C.F., Stutzman, P.E. and Snyder, K.A. (2006) Sulfate Resistance of Concrete: A New Approach. R & D Serial No. 2486, Portland Cement Association, Skokie, Illinois, 93 p.
- Ghrici, M., Kenai, S. and Said-Mansour, M. (2007) Mechanical Properties and Durability of Mortar and Concrete Containing Natural Pozzolana and Limestone Blended Cements. Cement and Concrete Composites, 29, 542-549. https://doi.org/10.1016/j.cemconcomp.2007.04.009
- Ramezanianpour, A.A. (2014) Cement Replacement Materials. Properties, Durability, Sustainability. Springer, New York. https://doi.org/10.1007/978-3-642-36721-2
- Sha, W. and Pereira, G.B. (2001) Differential Scanning Calorimetry Study of Ordinary Portland Cement Paste Containing Metakaolin and Theoretical Approach of Metakaolin Activity. Cement and Concrete Composites, 23, 455-461. https://doi.org/10.1016/S0958-9465(00)00090-1
- de Sensale, G.R. (2010) Effect of Rice-Husk Ash on Durability of Cementitious Materials. Cement and Concrete Composites, 32, 718-725. https://doi.org/10.1016/j.cemconcomp.2010.07.008
- Chen, Z., Liu, M. and Ma, S. (2005) Synthesis and Modification of Salt-Resistant Superabsorbent Polymers. Reactive and Functional Polymers, 62, 85-92. https://doi.org/10.1016/j.reactfunctpolym.2004.09.003
- Beushausen, H., Gilmer, M. and Alexander, M. (2014) The Influence of Superabsor-bent Polymer on Strength and Durability Properties of Blended Cement Mortars. Cement and Concrete Composites, 52, 73-80. https://doi.org/10.1016/j.cemconcomp.2014.03.008
- Mechtchreine, V. and Reinhardt, H.-W. (2012) Application of Superabsorbent Poly-mers (SAP) in Concrete Construction. Springer, Berlin. https://doi.org/10.1007/978-94-007-2733-5
- Esteves, L.P. and Jensen, O.M. (2012) Absorbency of Superabsorbent Polymers in Cementitious Environments. MRS Online Proceeding Library Archive, 1488.