Green Plastering Mortars Based on Clay and Wheat Straw

Andres, Dana Maria; Manea, Daniela Lucia; Fechete, Radu; Jumate, Elena

doi:10.1016/j.protcy.2016.01.105

Cited by 12 publications

(4 citation statements)

References 4 publications

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“…Laborel-Préneron et al have written a review on the use of plant aggregates and fibers in earth construction materials [4]. Other research studies have studied the association of clay-hemp [5], clayey soil-nature fibre [6], clay-straw [7,8], clay-wheat straw [9,10,11]. All these research works showed the benefits by associating the earth with plant aggregates especially to enhance the insulation performances.…”

Section: Introductionmentioning

confidence: 99%

Evaluate the influence of starch on earth/hemp or flax straws mixtures properties in presence of superplasticizer

Alhaik

Dubois

Wirquin

et al. 2018

Construction and Building Materials

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In this paper, we study the influence of two types of starch on earth hemp or flax straw mixtures at fresh and hardened states. The main goal is to propose new non-load bearing earthen for indoor. The mass percentage of starch/binder (S/B) in mixtures was fixed at 1% of mass. The VEBE consistometer test has been used to fix a similar consistency between mixtures. The targeted workability has to allow an easy introduction of materials in the moulds. Adding both of starch has shown a positive effect on mixtures workability at the fresh state and mechanical resistances at the hardened state. At hardened state, mechanical and thermal-acoustic performances have been measured on laboratory samples and blocks at real scale. Results have shown a significant effect of starch on mechanical strengths.

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Section: Introductionmentioning

confidence: 99%

Evaluate the influence of starch on earth/hemp or flax straws mixtures properties in presence of superplasticizer

Alhaik

Dubois

Wirquin

et al. 2018

Construction and Building Materials

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“…Clay is a fine-grained sedimentary rock composed of a blend of silica and fr of materials such as quartz and mica [38] (X-ray diffraction (XRD) using a high-re Brucker D8 diffractometer). The particular clay used in this study, considered to b of montmorillonite type, from the point of view of the particle size distribution, of approximately 38.15% clay minerals, 41.93% sand, and 19.92% silt, determine sieving and sedimentation method according to the Romanian standard STAS 191 Based on its size distribution, it is classified as clay loam (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Development of Clay-Composite Plasters Integrating Industrial Waste

et al. 2023

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This research investigates the feasibility of developing clay composites using natural materials and incorporating waste by-products suitable for plastering diverse support structures. The study identified a versatile composition suitable for a wide range of support materials and explored the potential of revaluing industrial waste and by-products by reintegrating them into the Circular Economy. The experimental investigation outlines the process of evaluating the influence of different raw materials on the performance of the clay composite. The findings confirm that using limestone sludge and fly ash as additives to clay contributes to reducing axial shrinkage and increasing mechanical strengths, respectively. The optimal percentage of additives for the clay used are identified and provided. Using hydraulic lime as a partial substitute for clay reduces the apparent density of dried clay composites, axial shrinkage, and fissures formation while improving adhesion to the substrate. Introducing dextrin into this mix increases the apparent density of the hardened plaster while keeping axial shrinkage below the maximum threshold indicated by the literature. Mechanical strengths improved, and better compatibility in terms of adhesion to the support was achieved, with composition S3 presenting the best results and a smooth, fissure-free plastered surface after drying.

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“…According to research findings [145], in order to attain a comparable consistency, hempcrete plaster necessitates a greater amount of binder compared to sand-lime coating, thus leading to a more substantial carbon footprint. While plant-based construction materials have a favorable overall life cycle balance and contribute positively to health [146], their drawback lies in their comparatively greater cost when compared to conventional materials. Despite the numerous ecological, environmental, and energy-saving advantages associated with plant-based products, the present consumer preference remains skewed towards non-plant-based alternatives, with just a minority opting for the former.…”

Section: Environmental Sustainabilitymentioning

confidence: 99%

State of the Art Review of Attributes and Mechanical Properties of Hempcrete

Asghari,

Memari

2024

Biomass

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The global surge in environmental pollution, largely attributed to industrialization, has fueled a pressing need for sustainable solutions. In response, the construction sector is increasingly focusing on bio-based materials such as hemp, recognized for its low environmental footprint and prominent carbon-negative quality. As designers, housebuilders, and an environmentally conscious society pivot towards ecological alternatives to standard building materials, hempcrete emerges as a promising candidate. As a composite material mainly made from hemp hurd/shiv, water, and lime, hempcrete offers the ability to sequester carbon long after its incorporation into structures. As a result, the hemp cultivation process—which can be completed within less than four months—ensures that more carbon is absorbed during production and deployment than emitted, e.g., per one study, sequestration on the order of 300 kg of CO2 per m3 of hempcrete. In comparison to concrete, hempcrete offers a more sustainable footprint, given its recyclability post life cycle. This state-of-the-art review paper delves deep into different aspects of hempcrete, summarizing its multifaceted attributes, particularly its compressive strength. Based on the study conducted, the paper also suggests strategies to augment this strength, thereby transitioning hempcrete from a non-load-bearing material to one capable of shouldering significant weight. As architects and designers consistently strive to align their projects with high ecological standards, focusing not just on aesthetic appeal but also environmental compatibility, hempcrete becomes an increasingly fitting solution for the future of construction.

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Green Plastering Mortars Based on Clay and Wheat Straw

Cited by 12 publications

References 4 publications

Evaluate the influence of starch on earth/hemp or flax straws mixtures properties in presence of superplasticizer

Evaluate the influence of starch on earth/hemp or flax straws mixtures properties in presence of superplasticizer

Development of Clay-Composite Plasters Integrating Industrial Waste

State of the Art Review of Attributes and Mechanical Properties of Hempcrete

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