The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper is devoted to the research into the consistence and air content of fresh cement composites. The experiment included 24 mixtures prepared on the basis of CEM I 42.5R Portland cement and natural quartz sand of 0÷2 mm particle size. Five types of polypropylene fibre were used, with lengths ranging from 3 to 38 mm. The effect of fibre content was measured for four basic formulas: A – basic mortars,...
In the paper there were presented the results of the research of non-stationary moisture sorption process of mortars at six levels of relative humidity of the air and three temperatures as well. Received equilibrium humidities for examined materials were the basis to draw sorption isotherms and mathematical description was taken under consideration. Received curves were examined taking on the one...
This paper deals with a diversity scale evaluation of the results of water vapour permeability measurements using computational procedures based on various norms. The assessment was carried out on two plastering mortars tested at high and low humidities – using the wet and dry cups method. The results achieved in the experiment were compared with standard computational values.
The paper presents results of tests of non-stationary moisture sorption process of cellular concrete that lets describe vapor mass diffusivity (Dm). The Vt-type and logarithmic-type procedures were applied to find moisture parameters of Dm. The obtained results allowed to compare two procedures used to determine the vapor mass diffusion coefficient.
Przedstawiono badania kinetyki wysychania silnie zawilgoconych materiałów budowlanych w różnych warunkach temperaturowych i brzegowych. Suszenie przegrody poprzez intensywne nagrzewanie oraz wietrzenie jest najbardziej popularną, a według niektórych specjalistów również najbardziej efektywną metodą suszenia w przypadku znacznego zawilgocenia. Realizacja opisanych badań miała na celu określenie wpływu...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.