Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: obciążenie jednostkowe

Sortuj według:

Ogranicz wyniki do:

Evaluation of hot-mix asphalt containing Portland cement treated blast furnace slag

Rondón-Quintana H. A., Ruge-Cardenas J. C., Bastidas-Martínez J. G.

Archives of Civil Engineering

2019

Vol. 65, nr 2

193--207

Iron production’s waste materials include significant quantities of blast furnace slag (BFS) which could potentially be used as a substitute for natural aggregates in hot mix asphalt (HMA) used in highway projects. Although many of properties of slag are interesting, its porosity and absorption rate would lead to greater consumption of asphalt. For this study, a Portland cement (PC) paste was used to reduce the porosity of a BFS. This PC treated BFS (called BFS-C) was then used in an HMA to replace the coarse fraction of a natural aggregate. Marshall, Indirect Tensile Strength (ITS), resilient modulus and Cantabro tests were then carried out on different HMA mixtures that included BFS-C. Using BFS-C, HMA’s resistance under monotonic loading, stiffness under cyclic loading, and resistance to moisture damage increased remarkably. In addition, the Cantabro abrasion resistance of BFS-C improved was better than that of the HMA mixture produced with untreated BFS.

Eksperymentalne badania wzdłużnych pasywnych łożysk magnetycznych

Burcan J., Sławińska A.

Tribologia

2004

nr 3

13-23

W referacie zawarto opis stanowiska, metodykę i wyniki badań dynamicznych jednostronnych i dwustronnych pasywnych łożysk magnetycznych. Przykładowo podano eksperymentalne przebiegi nośności, strat brodzenia oraz zmianę współczynnika tłumienia w funkcji prędkości obrotowej wirnika i różnych wartości szczeliny łożysk wykonanych z magnesów NdFeB.

The paper presents the description of a research stand, methodology and results of dynamic research of single- and double-acting passive magnetic bearings. It describes exemplary experimental runs of the curves of the carrying load ability, fording loss and the change of the vibration damping coefficient in the function of the rotor rotational speed for different gap values of bearings made of NdFeB magnets.