Influence of measuring system on rheological behavior of PVA-fiber reinforced mortars

被引：5

作者：

de Franca, Marylinda Santos ^{[1
,2
]}

Cazacliu, Bogdan ^{[3
]}

Kraenkel, Thomas ^{[1
]}

Savastano Jr, Holmer ^{[4
]}

机构：

[1] Tech Univ Munich, Ctr Bldg Mat, Franz Langinger Str 10, D-81245 Munich, Germany

[2] Univ Sao Paulo, Dept Construct Engn, Escola Politecn, BR-05508900 Sao Paulo, Brazil

[3] Univ Gustave Eiffel, Dept Mat & Struct MAST, Head & Mat Proc Lab, Route Bouaye CS4, F-44344 Nantes, France

[4] Res Nucleus Mat Biosyst NAP BioSMat, Dept Biosyst Eng, BR-13635900 Pirassununga, SP, Brazil

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 314卷

基金：

巴西圣保罗研究基金会;

关键词：

Rheology; Rheometry; Ball measuring system; Vane; Fiber reinforced mortar; YIELD-STRESS MEASUREMENTS; CREEPING MOTION; CONCRETE; SPHERE; FLOWABILITY; ADSORPTION; PARAMETERS; THIXOTROPY; SURFACE; FLUIDS;

D O I：

10.1016/j.conbuildmat.2021.125613

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Rheological analysis of fiber reinforced mortar is a complex subject since fibers induce significant flow disturbances in the paste-fiber system. The aim of this study is to compare the rheological properties of PVA-fiber reinforced mortars determined by two different rheometer probes: vane system and a sphere that is dragged across a fluid (ball measuring system, BMS). The yield stress of the mortar with and without fibers changed significantly by varying the superplasticizer content. Mixing time also varied from 1 to 3 min. BMS seems to better discriminate and quantify the fiber reinforced mortar rheology. For this system, some minor measurement artifacts introduced measurement variability between the first and second stage of measurement. The Vane system gave less consistent results. Significant strain localization and fiber network evolution in the sheared zone were observed, strongly affecting the measurements. It should be noted that in both systems, the mixing time did not change significantly the composite behavior. .

引用

页数：12

共 55 条

[1] Effect of fiber characteristics on fresh properties of fiber-reinforced concrete with adapted rheology
Abdelrazik, Ahmed T.
Khayat, Kamal H.
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2020, 230
[2] Influence of surface properties on the flow of a yield stress fluid around spheres
Ahonguio, Fiacre
Jossic, Laurent
Magnin, Albert
[J]. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 2014, 206 : 57 - 70
[3] Effect of vane configuration on yield stress measurements of cement pastes
Assaad, Joseph J.
Harb, Jacques
Maalouf, Yara
[J]. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 2016, 230 : 31 - 42
[4] Correlating water extraction to viscosity variations of injection grouts
Assaad, Joseph J.
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2015, 77 : 74 - 82
[5] CREEPING SPHERE MOTION IN HERSCHEL-BULKLEY FLUIDS - FLOW-FIELD AND DRAG
ATAPATTU, DD
CHHABRA, RP
UHLHERR, PHT
[J]. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1995, 59 (2-3) : 245 - 265
[6] Thixotropy - A review
Barnes, HA
[J]. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1997, 70 (1-2) : 1 - 33
[7] Creeping motion of a sphere in tubes filled with Herschel-Bulkley fluids
Beaulne, M
Mitsoulis, E
[J]. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1997, 72 (01) : 55 - 71
[8] Rheological and tribological behaviors of polypropylene fiber reinforced concrete
Bentegri, I
Boukendakdji, O.
Kadri, E-H
Ngo, T. T.
Soualhi, H.
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2020, 261
[9] CREEPING MOTION OF A SPHERE THROUGH A BINGHAM PLASTIC
BERIS, AN
TSAMOPOULOS, JA
ARMSTRONG, RC
BROWN, RA
[J]. JOURNAL OF FLUID MECHANICS, 1985, 158 (SEP) : 219 - 244
[10] Cazacliu B., 2006, MIXING ULTRAHIGH PER

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