Improvement in the rheological and mechanical properties of clay mortar after adding Ceratonia Siliqua L. extracts

Clausell, Joan Romero; Signes, Carlos Hidalgo; Solà, Gabriel Barbeta; Lanzarote, Begoña Serrano

doi:10.1016/j.conbuildmat.2019.117747

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…Taking into account the singular curves of each component of the concrete, the percentages of each were adjusted to recreate an ideal curve that was close to the proposal made by Bollomey [9], which proposes an ideal granulometric curve based on the consistency of the concrete. The procedure of recognising the reactivity of the GA with the clayey soil IL according to [10] was followed to obtain an ideal pH of the mixing water and an ideal percentage of the GA as a superplasticizer.…”

Section: Sccc Dosagementioning

confidence: 99%

Environmental evaluation of a self-compacted clay based concrete with natural superplasticizers

et al. 2021

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Cement concrete is the most widely used construction material worldwide due to its favourable mechanical characteristics. However, it is responsible for 8% of the total carbon emissions in the world, which are generated mainly during the production of clinker. Due to that fact, finding alternatives to cement for some applications in which it is not strictly needed should be a priority. In this study, a self-compacted clay-based concrete with natural superplasticizers based on natural tara tannins is presented. The main objective of the study is to determine if this clay-based concrete can be a sustainable alternative to conventional cement concrete as the main component in structural slabs. The methodology of the study is divided into two parts.First, the self-compacting clay concrete is characterized to determine its mechanical properties. Secondly, a comparative Life Cycle Assessment is conducted to determine the difference between the impacts generated by one square meter of self-compacting cement concrete and one of self-compacting clay concrete. The characterization of the material showed that this self-compacting clay concrete is suitable for some building elements such as structural slabs while avoiding the energy consumption needed to produce conventional concrete. The environmental impact results showed that using self-compacting clay concrete instead of the cement-based material decreases 90% of the carbon emissions and 80% of the overall environmental impact. After the completion of the study, it can be stated that the presented material is a sustainable alternative to conventional concrete for building structural slabs.

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Section: Sccc Dosagementioning

confidence: 99%

Environmental evaluation of a self-compacted clay based concrete with natural superplasticizers

et al. 2021

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“…The two most prominent features of poured earth are good initial workability and delayed setting. The dispersing effect is usually achieved either through cement plasticizers as soon as there is an alkali solution or through dispersants usually used in ceramic industries which are adsorbed on clay particles’ surfaces and hold them apart either via raising the surface charge density or bringing steric hindrance. − To solidify the highly dispersed paste, several ways have been put forward. The most common practice is by using a hydraulic binder like cement or lime .…”

Section: Introductionmentioning

confidence: 99%

Design of Tannin-Based Poured Earth Material via Deflocculation–Coagulation Control: Additive Selection and Tannin Variation

Habert

Brumaud

2022

ACS Sustainable Chem. Eng.

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Combining the low environmental impact of vernacular earthen construction and the cost efficiency of the modern concrete pouring technique, poured earth is becoming more attractive for the construction sector nowadays. However, the development of poured earth is still in its infancy and few design options have been reported. In this study, we present a new type of poured earth based on natural tannin extracts and iron compounds. Tannin is used as a dispersant to liquefy clay materials, while the iron compound acts as an antitannin agent to slowly remove the dispersing effect and recoagulate clay. Specifically, iron compounds with different solubilities were selected and their complexation reaction kinetics with oak tannin were investigated through various techniques including UV–vis, ATR, XRD, and rheological measurements. Iron citrate was finally screened out because of its controlled speed of chelating tannin originating from various species with and without the presence of kaolinite. Such a study enables the production of a poured earth material based on natural additives with higher strength and water resistance. It paves the way for locally tailored solutions for circular and climate-neutral construction.

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Viscosity Control of Kaolinites Dispersion via Addition of Tannin and Ferric Chloride

Lovage,

Prud’homme,

Jorand

2024

RILEM Bookseries

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Improvement in the rheological and mechanical properties of clay mortar after adding Ceratonia Siliqua L. extracts

Cited by 8 publications

References 6 publications

Environmental evaluation of a self-compacted clay based concrete with natural superplasticizers

Environmental evaluation of a self-compacted clay based concrete with natural superplasticizers

Design of Tannin-Based Poured Earth Material via Deflocculation–Coagulation Control: Additive Selection and Tannin Variation

Viscosity Control of Kaolinites Dispersion via Addition of Tannin and Ferric Chloride

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