Change of Fatigue and Mechanical Fracture Properties of a Cement Composite due to Partial Replacement of Aggregate by Red Ceramic Waste

Abstract

Fine-grained cement-based composites used in civil engineering and construction industry are usually made of cement-based matrix and natural aggregate (such as sand, gravel, crushed stone, etc.). Red ceramic waste aggregate is considered as a perspective replacement of a part of natural aggregate in modern environmentally oriented building materials. Fine-grained cement composite with natural aggregate partially replaced by ceramic waste aggregate usually show different mechanical fracture characteristics from ordinary fine-grained concrete. The specimens were tested at six different ages. This was the reason for conducting the research programme. Altogether, 6 fine-grained cement mixtures with various proportions of natural and red ceramic waste aggregate were prepared. The aim of this paper is to present and compare mechanical fracture properties obtained from static and fatigue tests. Bulk density, flexural and compressive cube strength, fracture toughness and fatigue properties (S−N − Wöhler curve) were of special interest. All of these tests are important for a practical application of concrete with ceramic aggregate for structures. All the results were statistically analysed and they showed that the fatigue and mechanical fracture properties were improved or at least kept up with the increasing levels of red ceramic waste aggregate. Environmental impact of application in construction industry of composites in question is discussed.

Effect of High Temperatures on the Impact Strength of Concrete Based on Recycled Aggregate Made of Heat-Resistant Cullet

“…Promising results have been obtained as regards the vibration damping coefficient in concrete composites modified by polymers and kinescope glass [45]. In [50][51][52], concrete samples containing different proportions of sand and waste red ceramic aggregate (RWCA) were tested. Among other things, compression and bending samples were tested, crack resistance and fatigue properties were determined.…”

An example of harnessing crushed ceramic pots for the production of watertight concrete

“…Both ceramic aggregates were planned to be added to mixes in amounts of 20%, 30%, and 40%. These amounts were chosen based on previous authors' experiences with similar waste ceramic aggregates 4,5,17,19 . Nevertheless, the mix with 40% of microfiller (P40) was dismissed due to stiff consistency, which could not be tested using the slump test.…”

“…The research program dedicated to the use of waste ceramics in form of tiles, roof tiles, bricks, and sanitary products to create concrete has been conducted by many scientists all over the world 4,5 . It was demonstrated 6 that the addition of recycled ceramic aggregate to conventional concrete improves its mechanical characteristics.…”

Fatigue and fracture mechanical properties of selected concrete for subtle precast structural elements

“…The limit of 2×10 6 cycles to fracture was used to consider the applied stress amplitude as safe for loading during the whole component lifetime. The testing procedure based on applying cyclic loading with a defined stress amplitude to determine the number of cycles to the fracture was described by multiple researchers [10][11][12][13][14][15][16][17]. The formula for fitting the experimentally obtained data from the fatigue test used in this paper is based on empirically derived S-N diagrams known as Wöhler curves:…”