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Microstructural characterization of cellulose fibres in reinforced cement boards

Schabowicz K., Jóźwiak-Niedźwiedzka D., Ranachowski Z., Kudela S., Dvorak T.

Archives of Civil and Mechanical Engineering

2018

Vol. 18, no. 4

1068--1078

The microscopic analysis of the different cellulose fibre cement composites is presented. The observations of the fibres in optical microscope in transmitted light and in scanning electron microscope are described. The micro computed tomography (micro-CT) and SEM were used to determine the distribution of the fibres in the matrix. The investigated fibre cement boards were produced by extrusion process and panels were cured in natural conditions. The main goal of the research was application of different microscopic methods to analyze the fibres distribution as a result of a different methods of their production. Micro-CT was used for 3D visualization of fibres distribution in three different fibre cement boards. It was possible to determine the average diameter of the fibres and their concentration using the high-resolution mode of micro-CT scanning procedure. Finally, a procedure which can be applied as a useful tool for analysis of the different procedures used in production of fibre cement boards is described. This procedure can be successfully used in the quality control system of cellulose fibre distribution in cement composites.

Wodoodporna płyta cementowa Aquapanel

Przegląd Budowlany

2006

R. 77, nr 9

37-38

Stabilization of heavy metals in sludge from sewage treatment plants by using detrital basalt and cellulose fibrous mass

Słomkiewicz P. M., Zdenkowski J. A.

Polish Journal of Chemical Technology

2001

Vol. 3, nr 2

26-27

The undertaken research on the expansibility of the developed hygenization technology process of wastewater sludge (which is pending by patent) to environment utilization, meets main requirements of heavy metals stabilization. Treatment of municipal wastewater sludge by dust from electrofilters of cement mills with addition of roasting raw detrital basalt is the base of this technology. These additions cause heavy metals to fix in the sludge. The modification of this technology involves using cellulose fibrous mass made from other waste - waste paper. In this work it was shown that the degree of extraction of heavy metals from mixtures with addition of cellulose fibrous mass (in comparison with mixture prepared without this addition) is smaller by about 1 - 2%. In both cases (the mixture with addition of cement kiln dust and the mixture without the addition), the sequence of the extraction of heavy metals (by continuous method at pH = 4.0 š 0.1 with acetic acid) increases in direction Pb < Cr, Ni < Cd < Zn < Cu.