Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: waste elimination

Sortuj według:

Ogranicz wyniki do:

Coupled effect of waste tire rubber and steel fibers on the mechanical properties of concrete

Waris Mohsin Adeel, Sahar Umbreen us, Akmal Usman, Khuram Nauman, Asiam Fahid, Fathi Dina

Materials Science Poland

2022

Vol. 40, No. 1

49--59

Studies in the literature indicate that while tire crumb rubber can be added to concrete to replace some natural aggregates, steel fibers need to be introduced to overcome the compromise in the mechanical properties of concrete, especially compressive and tensile strength, that would be caused due to the addition of tire crumb rubber exclusively. In the present study, a minimum content of steel fibers has been added to mitigate the negative impact of addition of tire rubber fibers on the mechanical properties of concrete. The tire rubber fibers content was varied from 1% to 3% by volume whereas steel fibers were added from 0.1% to 0.3% by volume only. In this way, the effectiveness of hybridized concrete using tire rubber and steel fibers was evaluated based on its mechanical properties. The results revealed that inclusion of steel fibers overcame the reduction in strength and toughness of concrete to which tire rubber fibers have been added. Concrete with 2% tire rubber fibers and 0.2% steel fibers showed better mechanical performance in terms of compressive strength (10%), split tensile (14.7%), flexural strength (6.6%), and flexural toughness indices ( T150D=46% , f150D=45% ) as compared to the concrete with only 3% tire rubber fibers.

System eliminacji odpadów chemicznych powstających w laboratoriach wydziałów chemicznych

Majewski J., Dzido G., Zawadiak J., Wójcik J., Rajca A.

Chemia i Inżynieria Ekologiczna

2001

Vol. 8, nr 11

1147-1154

Przedstawiono rezultaty prac nad opracowaniem systemu eliminacji odpadowych substancji chemicznych powstających w wyniku działalności badawczo-dydaktycznej na wydziałach chemicznych uczelni wyższych w Polsce. Przeprowadzono jakościową i ilościową analizę problemu odpadów chemicznych i źródeł ich powstawania. Przedstawiono również wskazania odnośnie opracowania i wdrażania przedmiotowego systemu.

Results of works on system of elimination chemical wastes obtained as a result of teaching and research activities on chemical faculties in Poland was presented. The qualitative and quantitative analysis of chemical wastes and their sources was described. The guidelines concerning work out and put into practice of the system are presented.