Influence of the shape and roughness of inclusions on the rheological properties of a cementitious suspension

Date

2008-05-01

Author

Erdoğan, Sinan Turhan
Ferraris, C. F.
Fowler, D. W.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

31
views

0
downloads

The influence of particle shape and surface roughness on the rheological properties of cementitious composites (cement paste plus coarse and fine particles) was investigated for mixtures of mortars and laboratory-made aggregates. The coarse particles were monosized spheres and cubes made from mortar, and monosized glass spheres, uncoated or roughened. The fine particles were uncoated or roughened monosized glass mini-spheres. The coarse particle mixtures were tested with a concrete rheometer to investigate separately the influence of overall particle shape and surface roughness on rheological properties as a function of aggregate concentration. The fine particle mixtures were tested with a paste rheometer to investigate the effect of surface roughness on flow at a smaller length scale using a different rheometer size and geometry. Results showed that shape had a large effect on plastic viscosity and, to a lesser degree, on Bingham yield stress. Surface roughness did not appear to have a significant effect on either property at the scale of roughness and particle volume fractions used. The tests were simulated using a validated computer model, which showed good agreement with the measured results.

Subject Keywords

General Materials Science, Building and Construction

URI

https://hdl.handle.net/11511/48079

Journal

CEMENT & CONCRETE COMPOSITES

DOI

https://doi.org/10.1016/j.cemconcomp.2008.01.003

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Effect of material characteristics on the properties of blended cements containing high volumes of natural pozzolans Turanlı, Lutfullah; Uzal, B; Bektas, F (Elsevier BV, 2004-12-01) The effect of three different natural pozzolans from Turkish deposits on the properties of blended cements produced by intergrinding cement clinker with a high volume of natural pozzolan (55 wt.% of the cementitious material) was investigated. The particle size distribution of blended cements, setting time, heat of hydration, and compressive strength of blended cement mortars were determined. Experimental results showed that the hardness of the pozzolanic material strongly influenced the particle size distr...
Influence of degree of saturation on the borehole sealing performance of an expansive cement grout Akgün, Haluk (Elsevier BV, 2000-02-01) The strength measures of expansive cement grout borehole plugs cast in welded tuff cylinders is investigated as a function of the degree of saturation of the plugged rock cylinder and of borehole size. Details on experimental procedure regarding rock cylinder and cement grout preparation, sample curing conditions, experimental apparatus, sample loading, mechanical characterization of the rock, and cement grout, along with procedures for the determination of the sample saturation assuming uniform saturation,...
Determination of the elastic properties of amorphous materials: Case study of alkali-silica reaction gel Moon, Juhyuk; Speziale, Sergio; Akgül, Çağla; KALKAN, BORA; Clark, Simon M; Monteiro, Paulo JM (Elsevier BV, 2013-12-01) The gel formed during alkali-silica reaction (ASR) can lead to cracking and deterioration of a concrete structure. The elastic properties of the ASR gel using X-ray absorption and Brillouin spectroscopy measurements are reported. X-ray absorption was used to determine the density of the gel as a function of pressure, and the result yields an isothermal bulk modulus of 33 +/- 2 GPa. Brillouin spectroscopy was applied to measure isentropic bulk (24.9-34.0 GPa) and shear moduli (8.7-10.1 GPa) of the gel. The r...
Synthesis of copolymers of methoxy polyethylene glycol acrylate and 2-acrylamido-2-methyl-1-propanesulfonic acid: Its characterization and application as superplasticizer in concrete Buyukyagci, Arzu; Tuzcu, Goezde; Aras, Leyla (Elsevier BV, 2009-07-01) Water-soluble copolymers of methoxy polyethylene glycol acrylate (mPEGA) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) were synthesized by free radicalic polymerization and evaluated as slump-retaining dispersant for cement particles. The slump-retaining effect of the synthesized copolymers was studied in terms of reaction pH, composition, and molecular weight of mPEG side chains. mPEG grafted copolymers (mPEGA-co-AMPS) were characterized by FTIR, H-1 NMR. In this study, dilute solution viscometry...
Effect of Presoaked Expanded Perlite Aggregate on the Dimensional Stability and Mechanical Properties of Engineered Cementitious Composites KESKİN, SÜLEYMAN BAHADIR; Sulaiman, Kamaran; Sahmaran, Mustafa; Yaman, İsmail Özgür (American Society of Civil Engineers (ASCE), 2013-06-01) This paper reports on an investigation of the use of expanded perlite aggregate as saturated lightweight aggregate (LWA) with respect to the mechanical and dimensional stability properties of engineered cemetitious composites (ECC). Expanded perlite aggregate was soaked in water for 24 h before its use in ECC, and replaced 10, 20, and 30% of the aggregate that was used in ECC production. The mixture proportion of a standard ECC mixture with properties that have been extensively reported in the literature is...

Citation Formats

S. T. Erdoğan, C. F. Ferraris, and D. W. Fowler, “Influence of the shape and roughness of inclusions on the rheological properties of a cementitious suspension,” CEMENT & CONCRETE COMPOSITES, pp. 393–402, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48079.