CBI Pro-Akademia

Rozwiń menu ▼

Contact

Katarzyna Woźniak
Katarzyna Woźniak
Technical Editor
e-mail:

Contact

Monika Stojan
Monika Stojan
Technical Editor
e-mail:

AI Partners

The image shows our cooperation with the online plagiarism detection service PlagScan

The task “Maintenance
of the anti-plagiarism system” is being
financed by an agreement 605/P-DUN/2018
from the resources of Polish Ministry of Science
and Higher Education dedicated to
the activity popularising the science.

Zadanie „Utrzymanie systemu antyplagiatowego”
finansowane w ramach umowy
605/P-DUN/2018 ze środków Ministra
Nauki i Szkolnictwa Wyższego przeznaczonych
na działalność upowszechniającą naukę

 

 

Crossref Member Badge

 

 

PRESSURE MEASUREMENT AS A TOOL TO IDENTIFY MOISTURE TRANSPORT MECHANISMS IN CONVECTIVE DRYING OF NON-SHRINKING MATERIAL

Date added: 2018-04-03
Type: Article

Author / authors

Anna Adamska

Anna Adamska

View more
Zdzisław Pakowski

Zdzisław Pakowski

View more

Abstract

The drying process is one of the most important stages in the production of building materials. The choice of
the drying method affects the chemical and physical properties of the final product. The aim of this research is
to measure and analyze the dynamic changes of internal pressure in non-shrinking, porous material during
convective drying. In this work the problem will be discussed with special attention to the behavior of rewetted
plaster. A commercial gypsum of company PIOTROWICE II (Alpol brand), typically used in construction and
decorative plastering was applied. Gypsum was mixed with water in recommended proportion of 0.6
water/gypsum and drying experiments were performed at 50°C. The changes in sample overall mass as well as
pressure and material temperature on the midpoint of sample axis were monitored. On the basis of the
obtained experimental data of axial pressure, it is possible to perform a more detailed analysis of mass and
heat transfer mechanisms than based on the drying kinetics alone. The pressure trends in the sample allow one
to determine the moment of transition from the first to the second drying period, without the need to
determine the kinetics of drying. The element of novelty consists of using a direct internal pressure
measurement to provide information on the variation of the actual drying rate and mass transfer mechanisms.

Downloads / Links