Feasibility of Ecofriendly Mortars with Different Hemp Additions for Use in Building Sector

Ferrández, Daniel; Álvarez Dorado, Manuel; Zaragoza-Benzal, Alicia; Leal Matilla, Alberto

doi:10.3390/heritage6070261

Cited by 4 publications

(2 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is attributed to the replacement of the original gypsum material with this plant-based addition, resulting in the composite retaining less water in its matrix. Similar observations have been made in prior research [11,58]. Additionally, it is observed that composites with hemp fiber addition exhibit a lower water absorption capacity compared to their counterparts with hemp powder.…”

Section: Tests On Behavior Regarding Water Exposuresupporting

confidence: 88%

“…In this work, we advocate for the use of hemp additions as a substitute for the original plaster material, aiming to develop environmentally friendly composites that are more cost-effective and meet regulatory requirements [11]. The basic components that impart properties to these natural fibers are cellulose, hemicellulose, and lignin [12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development and Characterization of Innovative Hemp–Gypsum Composites for Application in the Building Industry

Ferrández,

Álvarez,

Zaragoza-Benzal

et al. 2024

Applied Sciences

Self Cite

View full text Add to dashboard Cite

At present, the development of new eco-friendly building materials for the production of lightweight partitions has become a challenge in order to advance towards the industrialization of the building sector. This work aims to design, characterize, and analyze the possibilities of applying innovative ecological gypsum composites lightened with hemp. To achieve this, samples have been prepared with partial replacement of 15% and 30% in volume of the original gypsum material by adding hemp both in the form of powder and fiber. The results show how the replacement of 15% of gypsum by hemp fiber with a length between 8 and 12 mm improves the flexural strength of the composites. Likewise, all the dosages prepared for this study have met the minimum requirements for mechanical strength required by current regulations, while also improving the water resistance behavior of gypsum composites. However, the main advantage derived from the use of these hemp-lightened gypsum-based materials lies in their reduced thermal conductivity, being up to 50% lower than that obtained for traditional materials. These results suggest the possible application of these materials to produce prefabricated boards and panels for a more sustainable construction.

show abstract

Section: Tests On Behavior Regarding Water Exposuresupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Innovative Hemp–Gypsum Composites for Application in the Building Industry

Ferrández,

Álvarez,

Zaragoza-Benzal

et al. 2024

Applied Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

Replacing Tobacco with Hemp in the Beqaa Is Financially Rewarding for Farmers and Government in Lebanon

Abboud,

Gemayel,

Khnayzer

2024

Agriculture

View full text Add to dashboard Cite

Lebanon has been grappling with severe financial and monetary crisis since 2019. In this context, minimizing losses and finding additional revenue sources to sustain state operations have become imperative. One potential solution is to replace subsidized tobacco farming, which has no economic value, with hemp farming for industrial and medicinal purposes. This shift not only ensures economic efficiency but also provides farmers with a moral and profitable crop. However, until now, there has been no scientific study examining the economic impact of hemp cultivation in Lebanon’s Beqaa area. To address this gap, we conducted a Cost-Benefit Analysis within a Business Plan framework to assess the benefits of replacing tobacco with hemp and to provide decision-makers with data-driven strategies. For this analysis, we obtained accurate data on tobacco farming from the state-owned Tobacco Monopoly (Regie), while data on hemp was sourced from existing literature and adapted to Lebanon. Our findings indicate that tobacco farming currently generates USD 828 per dunam for farmers but results in a net loss of USD 317 per dunam to the economy, a shortfall subsidized by the Regie. In contrast, hemp yields a net profit of USD 2405 per dunam, equating to an overall gain of USD 19,240,000 in the Bekaa Valley area. This stark contrast in profitability underscores the potential of hemp as a more lucrative and sustainable alternative to tobacco.

show abstract

Natural Fibers in Composite Materials for Sustainable Building: A State-of-the-Art Review on Treated Hemp Fibers and Hurds in Mortars

Siouta,

Apostolopoulou,

Bakolas

2024

Sustainability

View full text Add to dashboard Cite

In recent years, natural-fiber composite building materials have experienced a revival and have become an important area of interest for the international building and scientific community as a sustainable solution for new constructions and restoration interventions. Natural fibers are obtained from renewable sources and are thus environmentally friendly, while at the same time they do not harm human health, as they do not contain toxic substances. Furthermore, natural reinforced composites present enhanced thermal and acoustic properties. However, the variety of components, the presence of hydroxyl groups, and the surface impurities which plant fibers possess, create a series of issues related to the design of composite materials, as they affect their final properties. Aiming to optimize the physical and chemical characteristics of fibers, several treatments have been applied. International research focuses mainly on hemp fibers, which are considered particularly durable and have thus been extensively studied. This literature review discusses the properties of hemp fibers and hurds, treatments which have been applied up to today, and their effect on the fiber and hurds, as well as the composite materials and discusses future trends. Mortars reinforced with treated hemp present mechanical benefits in most of the cases, such as higher flexural and tensile strength. Also, the improved adhesion between hemp and mortar matrices is commonly accepted by researchers.

show abstract

Feasibility of Ecofriendly Mortars with Different Hemp Additions for Use in Building Sector

Cited by 4 publications

References 72 publications

Development and Characterization of Innovative Hemp–Gypsum Composites for Application in the Building Industry

Development and Characterization of Innovative Hemp–Gypsum Composites for Application in the Building Industry

Replacing Tobacco with Hemp in the Beqaa Is Financially Rewarding for Farmers and Government in Lebanon

Natural Fibers in Composite Materials for Sustainable Building: A State-of-the-Art Review on Treated Hemp Fibers and Hurds in Mortars

Contact Info

Product

Resources

About