Single and Multi Effects of Polycarboxylate Main and Side Chain Lengths on Setting Time, Viscosity, and Yield Stress of Cementitious Mixtures Containing Fly Ash

ALTUN M. G., Ozen S., Karakuzu K., MARDANİ A., Ramyar K.

JOURNAL OF MATERIALS IN CIVIL ENGINEERING, cilt.35, sa.7, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 7
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1061/jmcee7.mteng-14321
  • Dergi Adı: JOURNAL OF MATERIALS IN CIVIL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Computer & Applied Sciences, Geobase, ICONDA Bibliographic, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Polycarboxylate, Rheology, Non-ionic monomer, Main chain, Side chain, COMB-SHAPED SUPERPLASTICIZERS, MOLECULAR-STRUCTURE, CHARGE CHARACTERISTICS, RHEOLOGICAL BEHAVIOR, HYDRATION PROPERTIES, PORTLAND-CEMENT, PERFORMANCE, ADMIXTURES, FLUIDITY, PASTE
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In this study, polycarboxylate polymers having different main chain lengths, side chain lengths, and main chain and side-chain lengths at constant molecular weight were synthesized. Cementitious mixtures with 0%, 15%, 30%, and 45% fly ash substitution levels were tested with polycarboxylate based admixtures (PCEs). As the main and side chain length of the PCE increased up to a certain value, regardless of the fly ash content, the fluidity of the mixtures was positively affected. However, after a certain length, both the electrostatic and steric effects of the PCE decreased, as the polymers intercalated and flocculated, adversely affecting the flow properties of the mixtures. Regardless of the PCE structure, the use of fly ash adversely affected the setting times and rheological properties of the mixtures.