Applicability of rheometers to characterizing earth mortar behavior. Part I: experimental device and validation

Azeredo, Givanildo; Morel, Jean‐Claude; Lamarque, Claude‐Henri

doi:10.1617/s11527-007-9343-9

Cited by 27 publications

(11 citation statements)

References 11 publications

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“…Earthen construction has recently regaining much attention in the building industry due to its low environmental impact and recyclability [1][2][3][4]. Nevertheless, the development of earthen construction is still limited because of the price, insurability difficulties and bad durability due to high water sensitivity.…”

Section: Introductionmentioning

confidence: 99%

3D printing of earth-based materials: Processing aspects

Perrot

Rangeard

Courteille

2018

Construction and Building Materials

169

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Due to its low environmental impact, earth construction has received much consideration in recent years. Nevertheless, its development remains limited due to low production rate. Recent developments have been made to improve earth-based materials mixdesign and processing methods. Simultaneously, digitally based construction methods have been introduced in the field of construction especially for cement-based materials application. Among these new techniques, the so-called 3D printing by extrusion deposit has been the most intensively studied. In this study, we assess the possibility of adapting this technique to earth-based material. After making the earth's rheological behaviour suitable for 3D printing, a laboratory-scale printing has been carried out and the printed samples have been mechanically tested.

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Section: Introductionmentioning

confidence: 99%

3D printing of earth-based materials: Processing aspects

Perrot

Rangeard

Courteille

2018

Construction and Building Materials

169

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“…Fortunately air lime-based mortars regained interest in the last couple of decades and have been studied by several researchers (Andrejkovicová et al 2013, Coroado et al 2010, Arizzi et al 2012. Meanwhile earth mortars have only been systematically studied by few researchers (Azeredo et al 2008, Minke 2011, Stazi 2003, Pkla et al 2003 and stabilised earth mortars with little amount of air lime have also been studied by very few researchers (Fernandes et al 2012, Gomes et al 2012a. In this last study, mortars were formulated and characterised with a commercial earth.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of air lime and clayish earth mortars for earthen wall renders

Faria¹,

Silva²,

Jamú³

et al. 2013

Vernacular Heritage and Earthen Architecture

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“…Finally, viscosity is independent from shear rate if p = 1. Banfill & Frias (2007) and Azeredo et al (2008), preferred Bingham Model to simulate the rheology of cement paste. Since the Bingham model is a special case of Herschel-Bulkley Model (p = 1), both cement pastes and micro-concretes can be modelled by Herschel-Bulkley formulae.…”

Section: Rheological Modelling Of Flow Curves and Determination Of Rhmentioning

confidence: 99%

Rheological behaviour of self-compacting micro-concrete

Felekoğlu

2014

Sadhana

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The rheological behaviour of Self-Compacting Micro-Concrete (SCMC) mixtures has been investigated within the scope of this paper. Rheological measurements have been performed using a novel rheometer equipped with a ball measuring system. Three SCMC mixtures with the same water/cement (W/C) ratios (0.44 by weight) and cement/limestone powder (1/1 by weight) with different High Range Water Reducing Admixtures (HRWRA) contents (1, 1.2 and 1.4% by weight of cement) have been tested. For comparison purpose, three conventional cement paste mixtures with varying W/C ratios (0.30, 0.325 and 0.35) were also prepared. Flow parameters such as yield value and plastic viscosity have been measured along with shear thickening or thinning behaviour. Furthermore, thixotropic behaviour of the various mixtures have been measured using hysteresis areas. Finally, advanced rheological properties of micro-concretes and cement pastes have been compared and discussed. While cement pastes investigated in this study possessed high yield values (34-217 Pa) and very low viscosities (5-19 Pa.s), comparatively high viscosities (17-45 Pa.s) and low yield values (0-47 Pa) have been obtained from SCMCs. The high viscosity of micro-concretes improves the solid holding capacity of this composite. According to flow curve analysis, cement paste mixtures and SCMCs exhibited shear thinning and shear thickening characteristics, respectively.

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Applicability of rheometers to characterizing earth mortar behavior. Part I: experimental device and validation

Cited by 27 publications

References 11 publications

3D printing of earth-based materials: Processing aspects

3D printing of earth-based materials: Processing aspects

Evaluation of air lime and clayish earth mortars for earthen wall renders

Rheological behaviour of self-compacting micro-concrete

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