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2 2024

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Study of the Thermomechanical Behavior of the Compressed Earth Bloc when Adding Plastic Bag Slices

Fidjah Abdelkader, Zazou Rahma Laredj, Belmehdi Nadjia, Ushcats Svitlana, Sengra Kheira, Sayeh Mohammad Elamine, Djaber Safa Marwa, Lyndiuk Olena, Melenti Yevhen, Melnyk Vladyslav

Ecological Engineering & Environmental Technology

2024

Vol. 25, iss. 11

274--283

Plastic waste management is a complex problem that has negative effects on the environment, society, and the economy. The development of science has made humanity use plastic materials a lot, and because it does not cost to manufacture and is recyclable, it is used in most industries. Plastic contains polyethylene, most of it does not biodegrade and remains in the environment for long periods, and its abundant accumulation leads to many environmental and health hazards to humans. This research, which aims to recycle plastic bags in the field of construction, is of utmost importance in addressing the pressing issue of plastic waste management. The plastic will likely increase the durability of structures mechanically and increase thermal insulation. In this research, the plastic bag segments are integrated in a ratio of 0% to 0.7% in the compressed clay bricks. Which consists of sand, clay, and gypsum. Some physical, mechanical, and thermal properties of the samples are measured. Preliminary results show that the addition of these strips reduces the value of the bulk density between 3.21% to 13%. The speed of sound transmission also decreases between 2.17% and 21%. The stress strength increases between 5.4% to 25.53%. The thermal conductivity value also decreases between 5.26% to 23.68%. This leads to the clay brick becoming lighter, more solid, and better thermal insulation. Thus, we combine the improvement of the properties of clay structures with a significant reduction in environmental impact, inspiring a more sustainable future.

Improving the properties of clay soils in foundationsthrough compaction and the integration of fibres and cement

Fidjah Abdelkader, Mohamed Rabehi, Kezrane Cheikh, Bendeb Asma, Smain Nour Elhouda, Khalili Rachid

Budownictwo i Architektura

2024

Vol. 23, no. 4

129--149

Clay soils present significant challenges in engineering applications, particularly in the design and construction of foundations, due to their susceptibility to swelling and shrinkage. This research investigates the enhancement of clay soils through the incorporation of fibres, compaction, and cement, based on a comprehensive series of tests conducted at the Public Works Laboratory in Adrar, southern Algeria. The tests adhered strictly to technical standards in soil mechanics, examining the physical, mechanical, and thermal properties of the clay soil. The results demonstrated that applying a compressive strength of 2.5 MPa and incorporating palm and glass fibres in proportions ranging from 0% to 0.3% reduced bulk density by 0.95% to 7%. The capillary water absorption rate increased by 10.61% to 12.63%, while compressive strength improved by 11.4% to 34.37%. Furthermore, thermal conductivity decreased by 0.71% to 11.9%. These findings provide valuable insights into the properties of clay soils and the observed improvements. It can be concluded that soil enhancement through various materials and fibres is viable and yields positive outcomes in geotechnical applications.

Gleby gliniaste, ze względu na podatność na pęcznienie i kurczenie, stanowią poważne wyzwanie w zastosowaniach inżynieryjnych, szczególnie w projektowaniu i budowie fundamentów. Niniejsze badania oparte na kompleksowej serii testów, przeprowadzonych w Laboratorium Robót Publicznych w Adrar w południowej Algierii, dotyczą wzmocnienia gruntów gliniastych poprzez włączenie włókien, zagęszczenie i użycie cementu. Zgodne ze standardami technicznymi w zakresie mechaniki gleby testy badały właściwości fizyczne, mechaniczne i termiczne gleby gliniastej. Wyniki wykazały, że zastosowanie wytrzymałości na ściskanie 2,5 MPa i włączenie włókien palmowych i szklanych w proporcjach od 0% do 0,3% zmniejszyło gęstość nasypową o 0,95% do 7%. Kapilarny współczynnik absorpcji wody wzrósł o 10,61% do 12,63%, podczas gdy wytrzymałość na ściskanie poprawiła się o 11,4% do 34,37%. Ponadto przewodność cieplna spadła o 0,71% do 11,9%. Wyniki te dostarczają cennych informacji na temat właściwości gleb gliniastych i zaobserwowanych ulepszeń. Można stwierdzić, że wzmocnienie gleby za pomocą różnych materiałów i włókien jest wykonalne i przynosi pozytywne rezultaty w zastosowaniach geotechnicznych.