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Improvement of Strength Parameters of Cement Matrix with the Addition of Siliceous Fly Ash by Using Nanometric C-S-H Seeds

Author

Listed:
  • Bartosz Szostak

    (Department of Conservation of Built Heritage, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40 str, 20-618 Lublin, Poland)

  • Grzegorz Ludwik Golewski

    (Department of Structural Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40 str, 20-618 Lublin, Poland)

Abstract

Modification of a cement matrix using additives and admixtures has been a common practice for many years. The use of some mineral additives as substitutes for the cement, e.g., the siliceous fly ashes (FAs), has a positive effect on reducing the energy used in cement production. On the other hand, such activities may have negative effects due to the lowering of strength parameters of composites in early stages of curing. In order to solve this problem, over the last few years, thanks to the patented "seedings" technology, a branch of industry connected with the production of admixtures that accelerate the binding process has developed significantly. Therefore, the paper presents the results of research aimed at analyzing the parameters of FA cement matrix with the nanoadmixture containing the nanometric C-S-H seeds (nanoadmixture (NA)). By using the modern NA, an attempt was made to neutralize the negative influence of the used industrial waste on the structure of the cement matrix in the early stages of its curing. The paper presents the results of strength tests for the FA cement pastes modified by NA in seven test periods, i.e., after 8, 12, 24 and 72 h, and 7, 14 and 28 days. Additionally, hydration heat tests were carried out on the analyzed material in the first 24 hours of curing.

Suggested Citation

  • Bartosz Szostak & Grzegorz Ludwik Golewski, 2020. "Improvement of Strength Parameters of Cement Matrix with the Addition of Siliceous Fly Ash by Using Nanometric C-S-H Seeds," Energies, MDPI, vol. 13(24), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6734-:d:465475
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    References listed on IDEAS

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    1. Grzegorz Ludwik Golewski, 2020. "Energy Savings Associated with the Use of Fly Ash and Nanoadditives in the Cement Composition," Energies, MDPI, vol. 13(9), pages 1-20, May.
    2. Hongbo Li & Hao Sun & Wanlong Zhang & Huiyan Gou & Qiuning Yang, 2019. "Study on Mechanical Properties of Self-Compacting Concrete and Its Filled in-Line Multi-Cavity Steel Tube Bundle Shear Wall," Energies, MDPI, vol. 12(18), pages 1-18, September.
    3. Xixian Yang & Shijie Li & Hongyu Huang & Jun Li & Noriyuki Kobayashi & Mitsuhiro Kubota, 2017. "Effect of Carbon Nanoadditives on Lithium Hydroxide Monohydrate-Based Composite Materials for Low Temperature Chemical Heat Storage," Energies, MDPI, vol. 10(5), pages 1-9, May.
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    Cited by:

    1. Rimma Niyazbekova & Gabit Mukhambetov & Rassul Tlegenov & Saule Aldabergenova & Lazzat Shansharova & Vasiliy Mikhalchenko & Michał Bembenek, 2023. "The Influence of Addition of Fly Ash from Astana Heat and Power Plants on the Properties of the Polystyrene Concrete," Energies, MDPI, vol. 16(10), pages 1-19, May.
    2. Grzegorz Ludwik Golewski, 2021. "The Beneficial Effect of the Addition of Fly Ash on Reduction of the Size of Microcracks in the ITZ of Concrete Composites under Dynamic Loading," Energies, MDPI, vol. 14(3), pages 1-14, January.

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