Mix design and properties assessment of Ultra-High-Performance Fibre Reinforced Concrete (UHPFRC)

Porcelain represents the foundation of the ceramics discipline and one of the most complex ceramic materials. Composed primarily of clay, feldspar, and quartz, porcelains are heat-treated to form a mixture of glass and crystalline phases. This review focuses on raw materials, processing, heat treatment, and mechanical behavior. Because of the complexities of the porcelain system and despite the substantial amount of research already conducted within the field, there remain significant opportunities for research and study, particularly in the areas of raw material understanding, processing science, and phase and microstructure evolution.

Porcelain—Raw Materials, Processing, Phase Evolution, and Mechanical Behavior

https://josbrouwers.bwk.tue.nl/publications/Journal36.pdf

Self-Compacting Concrete: Theoretical and Experimental Study

This paper addresses the development of an eco-friendly Ultra-High Performance Concrete (UHPC) with efficient cement and mineral admixtures uses are investigated. The modified Andreasen & Andersen particle packing model is utilized to achieve a densely compacted cementitious matrix. Fly ash (FA), ground granulated blast-furnace slag (GGBS) and limestone powder (LP) are used to replace cement, and their effects on the properties of the designed UHPC are analyzed. The results show that the influence of FA, GGBS or LP on the early hydration kinetics of the UHPC is very similar during the initial five days, while the hydration rate of the blends with GGBS is mostly accelerated afterwards. Moreover, the mechanical properties of the mixture with GGBS are superior, compared to that with FA or LP at both 28 and 91 days. Due to the very low water amount and relatively large superplasticizer dosage in UHPC, the pozzolanic reaction of FA is significantly retarded. Additionally, the calculations of the embedded CO2 emission demonstrate that the cement and mineral admixtures are efficiently used in the developed UHPC, which reduce its environmental impact compared to other UHPCs found in the literature.

/pdf/development-of-an-eco-friendly-ultra-high-performance-3fud7qno8j.pdf

Development of an eco-friendly Ultra-High Performance Concrete (UHPC) with efficient cement and mineral admixtures uses

https://pure.tue.nl/ws/files/3881873/448899096909189.pdf

Effect of nano-silica on the hydration and microstructure development of Ultra-High Performance Concrete (UHPC) with a low binder amount

Predictive Process Control of Crowded Particulate Suspensions: Applied to Ceramic Manufacturing

Particle packing is directly controlled by the particle-size distribution of a material being processed. For this reason, particle packing is important to all particulate/fluid systems. After the solids fraction of a body is defined, interparticle chemistry controls how the body will pack and flow. A system of powders can never pack better than the maximum possible level defined by the particle-size distribution alone. Proper control of interparticle chemistry however can help achieve maximum packing, can be used to open the structure, and/or can be used to modify rheological or other process properties.The main goals of particle-packing research have been to determine how systems of particles pack, to develop algorithms for calculating packing densities and porosities for any distribution of particles (spherical or nonspherical, rough or smooth, wet or dry), and to determine how packing and its properties affect the variety of industrial operations that utilize particulate/fluid systems.

Particle-Packing Phenomena and Their Application in Materials Processing

Predictive Process Control of Crowded Particulate Suspensions

The main references and concepts dealing with the subject of particle packing have been presented in earlier papers. The vast amount of literature extant on this subject shows the importance of particle packing to ceramists as well as to engineers in many other disciplines. Within the literature, there are two major historical approaches to particle packing. Each starts with one of the following two assumptions: particles are monodisperse or discrete sizes, or particles are continuous size distributions. We review and compare these two historical approaches, showing their theoretical bases and applicability, to show that they are fundamentally the same, and we present an equation which better describes the optimum packing of continuous size distributions

Particle packing. III: Discrete versus continuous particle sizes

Two other particle physics parameters of interest are porosity and pore size distribution. They are listed separately and distinctly because they are separate and distinct. Certainly they are related, but they each give different information and they apply to different processing phenomena.

James E. Funk

Papers

Predictive Process Control of Crowded Particulate Suspensions: Applied to Ceramic Manufacturing

Particle-Packing Phenomena and Their Application in Materials Processing

Predictive Process Control of Crowded Particulate Suspensions

Particle packing. III: Discrete versus continuous particle sizes

Porosity and Pore Size Distribution