Inicio  /  Applied Sciences  /  Vol: 13 Par: 14 (2023)  /  Artículo
ARTÍCULO
TITULO

Investigation of Durability Properties for Lightweight Structural Concrete with Hemp Shives Instead of Aggregate

Elzbieta Horszczaruk    
Jaroslaw Strzalkowski    
Anna Glowacka    
Oliwia Paszkiewicz and Agata Markowska-Szczupak    

Resumen

The paper presents the results of testing the performance of lightweight structural concrete containing hemp shives as an aggregate. It has been analysed how the higher binder content and use of the Portland cement affect the thermal and microbiological properties of the lightweight concrete. The aggregates of the plant origin and cement are incompatible because the plant chemical compounds, dissolved in water or an alkaline environment, inhibit cement hydration. To avoid this, mineralisation of the aggregates of plant origin is necessary. The most often used binder in hemp concrete is hydrated lime, a mineraliser. An addition of hydrated lime and sodium trisilicate was used for hemp shiv mineralisation in the tested materials with a cement binder. Concrete containing hemp shiv and cement binder, of which volume share in the concrete was at most 15%, was prepared as a reference concrete. In the remaining three concretes, the total content of the binder in relation to hemp shiv (by mass) was increased 2.5 times. It was shown that lime-binder hemp concrete offers a promising antimicrobial strategy, as it can inhibit bacterial and fungal growth on their surface with superior efficacy. The best results were obtained for tested concretes with the cement?lime binder regarding compressive strength; the average compressive strength was 9.56 MPa.

 Artículos similares

       
 
Alba Patrizia Santo, Oana Adriana Cuzman, Dominique Petrocchi, Daniela Pinna, Teresa Salvatici and Brunella Perito    
Weathering processes seriously affect the durability of outdoor marble monuments. In urban environments, a very common deterioration phenomenon is the dark discoloration or blackening of marble. This paper describes a multidisciplinary study on the state... ver más
Revista: Applied Sciences

 
Nuno M. M. Ramos, Joana Maia, Andrea R. Souza, Ricardo M. S. F. Almeida and Luís Silva    
Near-infrared (NIR) reflective materials are being developed for mitigating building cooling needs. Their use contributes to broadening the range of colours, responding to the urban aesthetic demand without compromising the building performance. Despite ... ver más
Revista: Infrastructures

 
Andrej Androjna, Blagovest Belev, Ivica Pavic and Marko Perkovic    
The use of electronic compasses and satellite systems has led to the magnetic compass becoming a secondary means of navigation. Yet this means of navigating is not only not obsolete, it is a necessary backup device: the construction simplicity of the mag... ver más

 
Luu Viet Dung, Truong Huu Duc, Le Thi Khanh Linh, Trinh Thi Dieu Ly, Hoang Anh Duong and Nguyen Thi My Hao    
Plastics are essential materials that play critical roles in people?s lives in the modern world. However, plastic pollution in the ocean has become a critical environmental problem due to the fact of its durability and long life span. In the present stud... ver más

 
Wei Guo, Xuedong Guo, Xing Chen, Yingsong Li, Zhun Li, Yin An and Wenting Dai    
Open graded friction course (OGFC), as a highly permeable mixture, has the characteristics of good friction and splash-and-spray reduction during rainstorms. The limitations of the use of such mixtures include the fact that they are affected by poor dura... ver más
Revista: Applied Sciences