Adding waste paper to clay plaster to raise its ability to buffer moisture; pp. 179–185

Proceedings of the Estonian Academy of Sciences

article

Nele Nutt¹  Ardo Kubjas²  Lembit Nei² 

[1] Academy of Architecture and Urban Studies, Department of Civil Engineering and Architecture, School of Engineering, Tallinn University of Technology;Tartu College, School of Engineering, Tallinn University of Technology

关键词: materials science;    composite material;    moisture buffer value;    nordtest;    plaster;    clay;    wastepaper;   

DOI  :  10.3176/proc.2020.3.01

学科分类：内科医学

来源: Teaduste Akadeemia Kirjastus

【 摘 要 】

The Nordtest method evaluates the moisture buffer value (MBV) of materials that are being exposed to indoor air. The test simulates daily variations (high RH of 75% for 8 hours, low RH of 33% for 16 hours) in MBV, which in this context refers to the moisture uptake/release in the material when it is exposed to relative humidity (RH) in a square wave. We are looking for ways to increase clay plaster’s ability to buffer moisture. Which material has simultaneously a higher ability to buffer moisture and can be added to the clay plaster mixture? The recipe for the specimen included the following: waste paper (newspaper paper), glue (methylcellulose), clay and water. Our research showed that adding paper plaster mixture to the clay plaster mixture increases the moisture buffering ability of the plaster. The bigger the amount of added paper plaster, the better the plaster’s ability to buffer moisture.

【 授权许可】

CC BY