Untitled Document
Untitled Document
Untitled Document
Study on the influencing factors of asphalt mixture compaction quality test method
based on simulation and experimentation.
https://www.sciencedirect.com/science/article/abs/pii/S0263224124018049
Self-Compacting concrete, which flows under its own weight without any need for
compaction or vibration, can save construction time, labor forces, and machine power.
The addition of Fibers to Self-compacting concrete and High Strength concrete may
improve its properties, yet retain some ductility. High Strength concrete is brittle, crack-
prone and reduces flexural and tensile strength. Basalt Fibres are eco-friendly, energy-
intensive, inexpensive, non-toxic, and have high stability. Fibre-reinforced composites,
which are used widely in civil infrastructure, possess high strength-to-weight ratio,
toughness, resistance to crack formation and more uniform stress field. The changes in
physical and mechanical properties are based on the fiber concentration and length;
higher length of the fibre reduces workability and compressive strength. Basalt Fibers
have excellent bond strength when used with proper content compared to concrete
plain mixture. The present research aims to find out whether the addition of Basalt
Fibers in High Strength Self Compacting concrete would be beneficial to structures
affected by environmental conditions.Self-compacting concrete is a very fluid type of
concrete mix, which can flow under its own weight and fill the molds for full compaction
without requiring vibration. It makes Self compacting concrete suitable to be placed in
complex forms and areas with congested reinforcement, for the easy and quality
construction. It has been demonstrated that self compacting concrete yields the
advantages of saving the labor cost, better surface quality, and lower chance of defects
including segregation and bleeding. Much work has been carried out in incorporating
fibers to the concrete mixtures for enhancing various mechanical and durability
properties.This literature on the basalt fibers and their effects on the durability
characteristics of high-strength self-compacting concrete indicates improved
performance in many applications. Mechanical properties and durability are improved by
the introduction of basalt fibers, which leads to the highly sustainable and resilient
concrete structures. Further studies in this regard are required to continue exploring
mechanisms that make up enhanced material performance. ( K. Navya, & S. Rakesh,
2022).
Studies on the effects of basalt fibres on the durability characteristics of high strength
self compacting concrete.
https://www.sciencedirect.com/science/article/abs/pii/S2214785321082614
Roller-compacted concrete (RCC) is a dry concrete mix that has gained popularity with
its great cost efficiency and rapid placement in most of the applications undertaken in
construction. These works have established the durable footing of RCC as an
alternative for pavements, dams, and industrial floors, citing its superiority over normal
conventional concrete due to lower water content and reduced construction time. The
proportions and gradation of aggregates greatly influence the packing density and voids
within the mix. Studies show that maximum aggregate grading enhances compactness
and strength. On the other hand, though RCC makes use of minimal water, when water
is present in contact during mixing, it influences workability and compacting efficiency,
but it is also accountable for achieving desired density through moisture balance. The
type of compaction method-roller, weight, and speed-is significant. Since the changes of
compaction parameters can achieve different compactness, it implies that proper
strategy for compaction is needed. In order to study various periods of compaction,
many models have been developed aiming to visualize the arrangement of the particles
as well as their interactions. The change in different material configurations will be
understood through the help of this theory, leading to changes in general performance.
Such numerical modeling technique captures the behavior of granular materials with
detailed understanding of particle dynamics under compaction. The study only tackles
granular stacking models. These involve the way particles get stacked up and have
impacts on compactness. Literature up to date suggests that these can predict with
accuracy the packing density and material properties of RCC which allow optimization
of the formulations of the former. Various analyses comparing the conventional concrete
method with RCC also revealed the fact that the latter has a higher strength, is cheaper
to use, and can bear heavier loads than the former. Such comparative analyses
emphasize the need to obtain precise predictive models to be chosen at the optimum
configuration of RCC for specific applications in order to get better in real-world
exposure. Extensive literature available on the prediction of compactness of RCC is
basically related to crucial aspects of factors influencing the RCC properties,
development of modeling techniques, and its advantages over conventional concrete.
The fruitful study on granular stacking models with valuable contributions to RCC will
enhance design and application, paving the way for further research and practical
improvements in the field. (T. Sedran, & C. Dufour, 2016).