Role of the filler on Portland cement hydration at very early ages : Rheological behaviour of their fresh cement pastes

Talero Morales, Rafael and Pedrajas, César and González Cortina, Mariano and Aramburo Varela, Carlos Hernando and Blázquez, A. and Rahhal, V. (2017). Role of the filler on Portland cement hydration at very early ages : Rheological behaviour of their fresh cement pastes. "Construction and building materials", v. 151 ; pp. 939-949. ISSN 0950-0618. https://doi.org/10.1016/j.conbuildmat.2017.06.006.

Description

Title: Role of the filler on Portland cement hydration at very early ages : Rheological behaviour of their fresh cement pastes
Author/s:
  • Talero Morales, Rafael
  • Pedrajas, César
  • González Cortina, Mariano
  • Aramburo Varela, Carlos Hernando
  • Blázquez, A.
  • Rahhal, V.
Item Type: Article
Título de Revista/Publicación: Construction and building materials
Date: 2017
ISSN: 0950-0618
Volume: 151
Subjects:
Freetext Keywords: Rheology, Portland cement, Fresh pastes, Fillers, Hydration stimulus
Faculty: E.T.S. de Edificación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The rheological behaviour of fresh Portland cement (PC) pastes with different chemical and potential mineralogical compositions was analysed when were blended with crystalline mineral additions (fillers). These two fillers were very different: a siliceous, Q, a-quartz type, and another limestone, C. Trials were conducted during latent hydration at 25 C. The findings showed that apparent viscosity was higher in the PC with low C3A and high C3S content, consequently, the Na2Oeq.(%) content of everyone also contributed very significantly. Moreover, it was also observed that the incorporation of each filler affects differently the rheological behaviour of fresh cement pastes. The different influence is due to the different physical and chemical properties of each filler (nature, chemical composition and character and texture intimate of the particles), and also of the type of PC to interact. Finally and at these very early ages, both fillers stimulated the hydration of the PC which they were mixed by direct and non-direct way, and in the case of C filler by indirect way as well, but without any pozzolanic activity. Despite the fact that blended cement P1/Q 60/40 has proved to be a ‘‘false positive” in Frattini test.

More information

Item ID: 54066
DC Identifier: http://oa.upm.es/54066/
OAI Identifier: oai:oa.upm.es:54066
DOI: 10.1016/j.conbuildmat.2017.06.006
Deposited by: Memoria Investigacion
Deposited on: 09 May 2019 11:24
Last Modified: 09 May 2019 11:30
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