Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: pasek plastikowy

Sortuj według:

Ogranicz wyniki do:

Study on some of the strength properties of soft clay stabilized with plastic waste strips

Kabeta Worku Firomsa

Archives of Civil Engineering

2022

Vol. 68, nr 3

385--395

It is well known that if plastic wastes are not well managed, it has a negative impact on the environment as well as on human health. In this study, recycling plastic waste in form of strips for stabilizing weak subgrade soil is proposed. For this purpose, a weak clay soil sample was mixed with 0.2%, 0.3%, and 0.4% of plastic strips by weight of soil, and the experimental results were compared to the control soil sample with 0% plastic. Laboratory tests on the Standard compaction test, Unconfined compression test (UCS), and California bearing ratio (CBR) were conducted according to the American Society for Testing and Materials (ASTM). The results of the study reveal that there are significant improvements in the strength of weak soil stabilized with plastic waste strips. Accordingly, the Standard Proctor test shows that there is a small increment in the maximum dry density of the soil when it is mixed with plastic strips. The result from the CBR test shows that there is a significant increment of CBR value with the plastic strip content. The unconfined compressive strength test also shows that increasing the percentage of plastic strips from 0 to 0.4% resulted in increased strength of soil by 138% with 2 cm length plastic strips. Therefore, this study recommends the application of plastic strips for improvement of the strength of soft clay for subgrade construction in civil engineering practice as an alternative weak soil stabilization method.

FEM modelling of buckling and post-buckling behaviour of plastic strips.

Spoormaker Jan L., Skrypnyk Ihor D., Vasylkevych Taras O.

Archive of Mechanical Engineering

2000

Vol. XLVII, nr 2

89-103

Because of clear trend in the world to design lighter plastic products, the phenomenon of creep buckling of visco-elastic solids becomes increasingly important. This paper reports the intermediate results of the research project on loading capability and buckling of plastic containers, carried out in the Laboratory of Mehanical Raliability (LMB) of TU Delft. Based on the earlier development non-linear visco-electricity model for engineering plastics, the FE simulation of the delayed in time buckling of plastic strips have been performed as a first step toward the understanding and predicting creep-buckling behaviour of plastic carriers.

Wobec oczywistego światowego trendu w kierunku projektowania produktów z lekkich tworzyw, coraz bardziej istotne staje sie zjawisko pełzającego wyboczenia brył plastykowych o właściwościach lepko-sprężystych. Niniejsza praca przedstawia wyniki etapu badań, prowadzonych w Laboratorium Niezawodności Mechanicznej Politechniki w Delft (Holandia), nad obciążalnością i wyboczeniam pojemników plastykowych. Posługując się opracowanym wcześniej nieliniowym modelem lepkościowo-sprężystym dla plastyków konstrukcyjnych, wykonano symulację metodą elementów skończonych zjawiska opóźnionego wyboczenia pasków plastykowych. Stanowiło to pierwszy krok do zrozumienia i przewidywania zjawiska pełzającego wyboczenia nośników plastykowych.