Effect of PCE anionic charge density on fly ash cementitious system-PCE compatibility

Name: Effect of PCE anionic charge density on fly ash cementitious system-PCE compatibility
Author: Ramyar, K., Felekoglu, B., Mardani, A., Kobya, V., Karakuzu, Kemal

İsim	Effect of PCE anionic charge density on fly ash cementitious system-PCE compatibility
Yazar	Ramyar, K., Felekoglu, B., Mardani, A., Kobya, V., Karakuzu, Kemal
Basım Tarihi:	2025-01-17
Basım Yeri	- Taylor & Francis
Konu	Rheology, Fly ash, Sulfonate, Phosphate, Anionic groups, Adsorption, Pce
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0169-4243
Kayıt Numarası	16014e5f-24ce-426e-805a-c6f470b804e3
Tarih	2025-01-17
Notlar	TÜBİTAK
Örnek Metin	In this study, the compatibility of polycarboxylate-based water-reducing admixtures (PCEs) with cementitious systems containing fly ash (FA) was investigated. For this purpose, PCEs with carboxylate, phosphate, and sulfonate anionic groups having different anionic charge densities were synthesized. The effects of PCEs on fresh properties and compressive strength of cementitious systems containing FA were investigated. The PCE with 9% phosphate substitution and high anionic charge density was found to be the most effective, requiring the least amount for the target flow. Similarly, in terms of the PCE requirement for the minimum Marsh funnel flow time and rheological parameters, the best performance was obtained with 5% sulfonate substituted PCE having high anionic charge density. While FA had a positive effect on the PCE requirement and consistency retention of the mixtures; it had a negative effect on Marsh funnel flow time, rheological properties, and compressive strength. However, the rheological properties of the mortar mixtures were not adversely affected by the FA substitution as much as that of the paste mixtures. Regarding the 28-day compressive strength of mortar mixtures, the optimum FA substitution ratio was 15%. Fly ash substitution above this level reduced the compressive strength at all ages including 28-day strength. Anionic charge density variation of PCE had no significant influence on the compressive strength of the mortars.
DOI	10.1080/01694243.2024.2401091
Cilt	39

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Effect of PCE anionic charge density on fly ash cementitious system-PCE compatibility

Yazar Ramyar, K., Felekoglu, B., Mardani, A., Kobya, V., Karakuzu, Kemal

Basım Tarihi 2025-01-17

Basım Yeri - Taylor & Francis

Konu Rheology, Fly ash, Sulfonate, Phosphate, Anionic groups, Adsorption, Pce

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0169-4243

Kayıt Numarası 16014e5f-24ce-426e-805a-c6f470b804e3

Tarih 2025-01-17

Notlar TÜBİTAK

Örnek Metin In this study, the compatibility of polycarboxylate-based water-reducing admixtures (PCEs) with cementitious systems containing fly ash (FA) was investigated. For this purpose, PCEs with carboxylate, phosphate, and sulfonate anionic groups having different anionic charge densities were synthesized. The effects of PCEs on fresh properties and compressive strength of cementitious systems containing FA were investigated. The PCE with 9% phosphate substitution and high anionic charge density was found to be the most effective, requiring the least amount for the target flow. Similarly, in terms of the PCE requirement for the minimum Marsh funnel flow time and rheological parameters, the best performance was obtained with 5% sulfonate substituted PCE having high anionic charge density. While FA had a positive effect on the PCE requirement and consistency retention of the mixtures; it had a negative effect on Marsh funnel flow time, rheological properties, and compressive strength. However, the rheological properties of the mortar mixtures were not adversely affected by the FA substitution as much as that of the paste mixtures. Regarding the 28-day compressive strength of mortar mixtures, the optimum FA substitution ratio was 15%. Fly ash substitution above this level reduced the compressive strength at all ages including 28-day strength. Anionic charge density variation of PCE had no significant influence on the compressive strength of the mortars.

DOI 10.1080/01694243.2024.2401091

Cilt 39