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Abstract

Abstract at IgMin Research

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Influence of Polycarboxylate Superplasticizer on the Calorimetric and Physicomechanical Properties of Mortar

Affiliation

Affiliation

    Institute of Science, University Center of Tipaza, 42000, Algeria

Abstract

The use of polycarboxylate ether superplasticizer PCE in the preparation of mortars and concretes influences the hydration kinetics and the amount of total heat released. This leads to a modification of certain properties of the mortar, namely workability, calorimetry and mechanical resistance. In this study two ether polycarboxylate superplasticizers with different chemical structures were used; they were incorporated at different dosages into a standardized cement-based mortar. The objective of this work is to study the effectiveness of these superplasticizers and to select the most compatible product with cement and the most suitable for use according to the climates of the country. The impact of superplasticizers on fresh cement was studied by measuring the Marsh cone flow time and calorimetric measurement. In the hardened state, the mechanical properties were provided by measuring the compressive strength. The results show that low dosages of ether polycarboxylate superplasticizer promote grain hydration and produce more heat. On the other hand, high dosages delay the contact of the cement grains with the mixing water and cause a reduction in the final heat released and a delay in setting. The ether polycarboxylate superplasticizer with high carboxylic density gives the best mechanical resistance compressive at 7 and 28 days.

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References

    1. Harichane A, Benmounah A. Influence of Polycarboxylic Ether-based Superplasticizers (PCE) on the Rheological Properties of Cement Pastes. J Mater Eng Struct. 2021; 8: 325–339.
    2. Lei L, Hirata T, Plank J. 40 years of PCE superplasticizers—History, current state-of-the-art, and an outlook. Cem Concr Res. 2022; 157: 106826.
    3. Harichane A,  SeghirNT, Niewiadomski P,  Sadowski Ł. Effectiveness of the Use of Polymers in High-Performance Concrete containing Silica Fume.  2023; 15(18): 3730. https://doi.org/10.3390/polym15183730
    4. Harichane A, Benmounah A, Plank J. Effect of Molecular Weight and Carboxylic Density of Polycarboxylates Ether Superplasticizer on Its Performance in Cement Pastes. J Mater Eng Struct. 2023; 10: 283-292.
    5. Sha S, Wang M, Shi C, Xiao Y. Influence of the structures of Polycarboxylate superplasticizer on its performance in ce-mentbased materials-a review. Constr Build Mater. 2020; 233: 117257.
    6. Kai K, Heng Y, Yingbin W. Effect of chemical structure on dispersity of polycarboxylate superplasticizer in cement paste. Adv Cem Res. 2019; 32: 456–464.
    7. Chen S, Sun S, Chen X, Zhong K. Effects of core-shell polycarboxylate superplasticizer on the fluidity and hydration behavior of cement paste. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2020; 590: 124464. doi:10.1016/j.colsurfa.2020.124464.
    8. Kong F, Pan L, Wang C, Zhang D, Xu N. Effects of polycarboxylate superplasticizers with different molecular structure on the hydration behavior of cement paste. Construction and Building Materials. 2016; 105:545-553. doi:10.1016/j.conbuildmat.2015.12.178.
    9. Papo A, Piani L. Effect of various superplasticizers on the rheological properties of Portland cement pastes. Cement and Concrete Research. 2004; 34(11): 2097-2101. doi:10.1016/j.cemconres.2004.03.017.
    10. Alonso MM, Palacios M, Puertas F. Compatibility between polycarboxylate-based admixtures and blended cement pastes. Cement and Concrete Composites. 2013; 35(1): 151-162. doi:10.1016/j.cemconcomp.2012.08.020.

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