A Statistical Model of Fibre Distribution in a Steel Fibre Reinforced Concrete

Kobaka, Janusz

doi:10.3390/ma14237297

Cited by 4 publications

(2 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results were collected and analyzed using OMNIC v9 software. The relationships between observations were determined using principal component analysis (PCA) [ 22 ] based on the Pearson correlation-similarity matrix. Agglomerative hierarchical clustering (AHC) was obtained based on the Bray and Curtis dissimilarity matrix, and dendrogram construction was performed using Ward’s method.…”

Section: Methodsmentioning

confidence: 99%

Concept of Sustainable Demolition Process for Brickwork Buildings with Expanded Polystyrene Foam Insulation Using Mealworms of Tenebrio molitor

et al. 2022

View full text Add to dashboard Cite

The traditional demolition process for brickwork buildings results in a significant volume of mixed debris. The debris consists of ceramic bricks (and other wall elements), mortar, thermal insulation (usually expanded polystyrene or rockwool), smaller steel elements, pieces of wood, and glass. Such mixed debris is difficult to recycle. Separating thermal insulation that is “glued” by cement mortar to brickwork is probably the most difficult and time-consuming task in processing mixed debris. This task can be performed in a very different and fully “automatized” manner using Tenebrio molitor mealworms. The mealworms remove expanded polystyrene from brickwork surfaces and transform it into frass. In the paper, a research program aiming to prove the concept of using the mealworms of Tenebrio molitor for processing mixed debris is presented. The tests were conducted using two models of a three-layered brickwork wall, which is very common in Europe. The proposed approached was successful. Both types of used expanded polystyrene foam (EPS) were fully removed from multilayer wall specimens. The possibilities and limitations of the proposed processing method were discussed and analyzed. The conducted research proved that it is feasible to clean brickwork debris from the EPS using Tenebrio molitor mealworms. Differences in the speed of cleaning process regarding the type of EPS were noted. More research is needed to scale the process, and to find the best method for using frass. By using Tenebrio molitor mealworms, one can make the demolition process much cleaner.

show abstract

Section: Methodsmentioning

confidence: 99%

Concept of Sustainable Demolition Process for Brickwork Buildings with Expanded Polystyrene Foam Insulation Using Mealworms of Tenebrio molitor

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The main advantages of using fibres in concrete are resistance to extreme loadings and increased tensile strength [ 3 , 4 , 5 , 6 ]. Another point is the possibility of orienting fibres and thus obtaining anisotropic properties when needed, particularly a targeted increase in tensile strength and the capacity to dissipate mechanical energy in the desired direction [ 7 , 8 , 9 , 10 , 11 ]. In 3D printing applications, fibre orientation also plays a key role [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Simulations of the Behaviour of Steel Ferromagnetic Fibres Commonly Used in Concrete in a Magnetic Field

et al. 2021

View full text Add to dashboard Cite

The efficiency of fibre reinforcement in concrete can be drastically increased by orienting the fibres using a magnetic field. This orientation occurs immediately after pouring fresh concrete when the fibres can still move. The technique is most relevant for manufacturing prefabricated elements such as beams or columns. However, the parameters of such a field are not immediately apparent, as they depend on the specific fibre reaction to the magnetic field. In this study, a numerical model was created in ANSYS Maxwell to examine the mechanical torque acting on fibres placed in a magnetic field with varying parameters. The model consists of a single fibre placed between two Helmholtz coils. The simulations were verified with an experimental setup as well as theoretical relationships. Ten different fibre types, both straight and hook-ended, were examined. The developed model can be successfully used to study the behaviour of fibres in a magnetic field. The fibre size plays the most important role together with the magnetic saturation of the fibre material. Multiple fibres show significant interactions.

show abstract

Case study of fiber reinforced, lightweight concrete, intended for production of precast elements

Bancerz,

Katzer,

Miarka

2024

Case Studies in Construction Materials

View full text Add to dashboard Cite

A Statistical Model of Fibre Distribution in a Steel Fibre Reinforced Concrete

Cited by 4 publications

References 42 publications

Concept of Sustainable Demolition Process for Brickwork Buildings with Expanded Polystyrene Foam Insulation Using Mealworms of Tenebrio molitor

Concept of Sustainable Demolition Process for Brickwork Buildings with Expanded Polystyrene Foam Insulation Using Mealworms of Tenebrio molitor

Simulations of the Behaviour of Steel Ferromagnetic Fibres Commonly Used in Concrete in a Magnetic Field

Case study of fiber reinforced, lightweight concrete, intended for production of precast elements

Contact Info

Product

Resources

About