Increasing brick body strength by adjusting the particle-size distribution

1 Context

The particle-size distribution of raw materials employed is one of the most important parameters with respect to workability, drying and firing behaviour and pore-structure formation within the brick body, which dictates most of the finished product properties. Until now, most investigations regarding the complex influence of particle-size distribution have been of an empirical nature – for example, by means of a Winkler diagram for the three size fractions 0–2, 2–20 and >20 µm. The present research project, however, pursues a new approach.


2 Objectives

The set objective was to imitate...

Related articles:

Issue 2021-05

Potential for millions of tonnes of new raw materials

Raw materials are becoming scarce and expensive. The magic word is resource efficiency. Against this background, the utilization of secondary or waste-derived materials, appropriately tested for their...

Issue 2013-11

From mine to building element testing

To address such a comprehensive subject in a talk, first the requirements for a certain product property are described. To answer the question of what pit clay or additive is suitable for what...

Issue 2011-6

Enhancement of the hydrostatic capillary tension in wet brick green bodies for a reduced susceptibility to cracking during drying

1 Context and problem statement After shaping, brick green bodies exist as capillary-porous solids, the pores of which are filled with water and which are enclosed by a water sheath. Capillary suction...

Issue 2018-6

Influence of the ceramic-related properties on the adhesive bond between brick slips and substructure material

The application of clay brick slips on façade surfaces is to be facilitated with a simplified specification. Basis for this are research findings with brick slips mortared directly onto rendered or...

Issue 2013-05

Energy-saving methods of conditioning ­green brick bodies for low-temperature drying

1 Context and formulation of problem Low-temperature drying is a modified form of open-air drying with the aid of modern plant and control technology. In heavy clay production, the introduction of...