Measuring material moisture in the brick and tile industry

The object of investigation was to determine how well the moisture content of drying green bodies and fired bricks can be measured using a capacitive moisture sensor. The water content of raw materials and of fired bricks actually can be determined by means of a moisture sensor. Due to the shrinkage involved in the drying of green bricks, however, the use of capacitive means to measure their moisture content is not entirely suitable. Once shrinkage ends, however, the residual water load can be determined with a moisture sensor.

1 Introduction

Most steps of the production process are decisively dependent on the moisture content of the material. For example, the moisture content of the raw material affects the water content of the extrusion compound. Continuous monitoring of raw material moisture enables systematic control for closely maintaining the initial water content and, hence, ensuring process reliability. During the drying process, in-line material moisture measurement facilitates continuous monitoring of progress made. The drying process therefore can be improved by appropriate metrological means. Hence, the...

Related articles:

Issue 2014-08

Measuring green-product moisture

All regular-market measuring systems determine the water content of a given medium by indirect means, i.e., by exploiting a certain physical effect. The consequences of a change in moisture content...

Issue 2020-5 Anne Tretau1, Ralf Wagner2, Frank Bonitz2, S. Alireza Pakdaman Shahri1

Material-specific moisture determination during brick drying

1 Introduction The objective of drying green bricks is to remove any water necessary for plastic shaping prior to ceramic firing. For this purpose, convection drying is used. Control of the dryer in...

Issue 2017-6

Effective dryer control based on material-specific moisture content – Part 1: Material data

Drying green products is easily the most energy-intensive process step in clay brick and tile production. For the purpose of process control, it is interesting to know the distribution of moisture in...

Issue 2009-05

Influence of the inner surface of drying green ceramic products on their moisture-dependent tensile strength

1 Introduction The determination of the pore size distribution by means of mercury penetration porosimetry leads as a secondary result to the specific pore surface a (total pore area) of the dry...

Issue 2009-11

ACO moisture measurement systems – the innovation at Wienerberger, Deest/Netherlands

At the location Wiener- berger Deest (Nether­lands), moisture measurement in clay has always been an important subject. With an accurate and reliable measurement, production failures due to too high...