Energy Saving Preparation and Evaluation of a Novel Polycarboxylate Superplasticizer

Abstract:

A novel polycarboxylate superplasticizer (PCE) with energy saving preparation was elaborately designed and synthesized by using acrylic acid (AA), hydroxypropyl acrylate (HPA) and isopentenyl polyethylene glycol (IPEG) as monomers. To investigate the effects of the preparation method on the effectiveness of PCE, the PCEs were prepared from energy-saving method and common method respectively, and the hydration heat evolutions of the cement pastes containing these PCEs were comparatively probed. Furthermore, the working mechanisms of the PCEs by different preparations were identified via adsorption behavior, adsorption kinetic and Zeta potential of the PCE on cement surfaces. The results showed that, this novel PCE prepared in an energy saving manner can significantly prolong the hydration process and present a stronger adsorption capacity. In addition, the adsorption of this PCE on cement surface exhibited a characteristic of pseudo first order kinetic equation model. The evaluation in energy conservation showed that, this energy saving preparation can save 1.548×10⁴ kJ per 10 ton production. The aim of this study is to provide a new avenue to synthesize a PCE with economical method which achieves energy-saving preparation. Due to the indispensable application in construction industry, the innovations from this study contribute to the low energy-consumption production and high eco-effectiveness of the novel PCE, which has potential applications in low-emission building materials.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 1006-1012
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.1006
• Online since: June 2021
• Authors: Xiao Liu*, Xiao Fei Song, Qi Feng Luo, Chun Lei Xia, Yun Sheng Zheng, Zi Ming Wang, Su Ping Cui
• Keywords: Eco-Effectiveness, Energy Saving, Evaluation, Polycarboxylate Superplasticizer, Preparation

References

[1] Plank, J., Sachsenhauser, B. Impact of molecular structure on zeta potential and adsorbed conformation of α-allyl-ω-methoxy polyethylene glycol-maleic anhydride superplasticizers, J. Journal of Advanced Concrete Technology. 4 (2006) 233-239.

DOI: 10.3151/jact.4.233

[2] Kinoshita, M., Saitou, K., Tamaki, S., et, al. Multi-Functional Admixtures for Hydraulic Cement Compositions, U.S. Patent 7,265,191. (2007).

[3] Mezger, J., Kraus, A., Grassl, H., et, al. Vinyl Ester Maleic Acid Derivative Copolymers, U.S. Patent 8,227,559. (2012).

[4] Liu, X., Wang, Z.M., Zheng, Y.S., et, al. Preparation, characterization and performances of powdered polycarboxylate superplasticizer with bulk polymerization, J. Materials. 7 (2014) 6169-6183.

DOI: 10.3390/ma7096169

[5] Plank, J., Sachsenhauser, B., Reese, J.D. Experimental determination of the thermodynamic parameters affecting the adsorption behavior and dispersion effectiveness of PCE superplasticizers, J. Cement and Concrete Research. 40 (2010) 699-709.

DOI: 10.1016/j.cemconres.2009.12.002

[6] Kong, F.R., Pan, L.S., Wang, C.M., Zhang, D.L., et, al. Effects of polycarboxylate superplasticizers with different molecular structure on the hydration behavior of cement paste, J. Cement and Building Materials. 105 (2016) 545-553.

DOI: 10.1016/j.conbuildmat.2015.12.178

[7] A. Zingg, F. Winnefeld, L. Holzer, J. Pakusch, S. Becker, R. Figi, et, al. Interaction of polycarboxylate-based superplasticizers with cements containing different C3A amounts, J. Cement and Concrete Composites. 31 (2009) 153-162.

DOI: 10.1016/j.cemconcomp.2009.01.005

[8] Yamada, K., Ogawa, S., Hanehara, S. Controlling of the adsorption and dispersing force of polycarboxylate-type superplasticizer by sulfate ion concentration in aqueous phase, J. Cement and Concrete Research. 31 (2001) 375-383.

DOI: 10.1016/s0008-8846(00)00503-2