Hence it is a better choice in situations demanding tight fits that do not vary 6) Durable: Structures made of composites have a long life and need little maintenance. 7) Design Flexibility: Composites can be moulded into complicated shapes more easily than most other materials. 8) Light Weight: Composites are light in weight, compared to most woods and metals Thus, if looked at these advantages, in the longer run, the net benefit obtained from the composite product would be greater than the normal product that are being used currently. USP that the Everlast composites offers more is in term of- Corrosion resistance Zero scrap value High impact strength Only thing that needs to be carried out is to market the product properly at all the levels. They need to step up their marketing activities which has been proposed by us and are being mentioned in the report.
The results showed that the compressive strengths of mortars with Nano silica particles were all higher than those of mortars containing silica fume at 7 and 28 days. It is concluded that the Nano-particles are more valuable in enhancing strength than silica fume since strength increased as the Nano silica content increased from 3% to 12%. However, they demonstrated that using higher content of Nano silica must be accompanied by adjustments to the water and superplasticizer dosage in the mix in order to ensure that specimens do not suffer cracking. Otherwise, using this much quantity of Nano-SiO2 could actually lower the strength of composites instead of improving it, although this finding was not observed in their
Composites are combination of two or more materials that results in better properties than those of the individual components used alone. There are many disadvantages of using composite materials such as lightweight, high strength, corrosion resistant, high strength-to-weight ratio, high impact strength, high electric strength (insulator), low maintenance, etc. Because of that, composites are one of engineer’s favorite materials nowadays. Almost in all sectors like oil, gas, aviation, and automobile industries are all using composite materials. In order to meet increasing technical, technological and economic requirements, the use of modern, composite materials becomes increasingly prominent.
Abstract: The precast construction system is witnessing a growing interest because of the focus on improving the work area and reduce the construction time, and reduce environmental impact, while maintaining quality. In addition, the precast concrete system is becoming very popular around the world for low, medium, and high-rise construction due to the economical advantages possible with the ease and speed of assembly, and the high quality of the precast panels. The connections between panels are extremely important since they affect both the speed of erection and the overall integrity of the structure. The connections are more important and the specificity of Precast construction, being the general behavior of the precast structures related to their design,
Concrete, a strong, durable material composed of cement, aggregate, and water, is the most used building material in the world. The improvement of concrete is needed and essential in order to increase the performance and sustainability. Good quality concrete requires adequate compaction during casting by skilled labours, which have numerous disadvantages. Self-compacting concrete (SCC), with self-compacting ability enables the concrete to self-levelled and compacted under its own weight without internal or external compaction. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement.
The largest application for steel fiber reinforced concrete is floor slab construction, although it’s use as a replacement for or complement to structural reinforcement in other applications is growing fast. Steel fiber floor/slab applications can save money when compared to other reinforcing systems. In addition, joint spacing can be increased and they can be used as a replacement for structural reinforcement in some cases. In some ways, the role polymer macro fibers and steel fibers play in concrete is similar. Each product can be used to extend joint width in floor slabs and each can reduce curling.
As flat slab building structures are significantly more flexible than traditional concrete structures, thus becoming more vulnerable to seismic loading. Therefore, the characteristics of the seismic behavior of flat slab buildings suggest that additional measures for guiding the conception and design of these structures in seismic regions are needed. They favored by both architects and clients because of their aesthetic appeal and economic advantage. LITERATURE
The merits of composites over their ordinary materials are the capacity to meet assorted outline necessities with noteworthy weight savings and additionally Strength-to-weight proportion. Some advantages of composite materials over conventional ones are as follows: 1. Tensile strength of composites is four to six times more than that of steel or aluminium (based on the reinforcements). 2. Enhanced torsional, solidness impact resistance.
In the current world, fiber- reinforcement composites are superseding products of convectional materials due to low cost and facilitate of engenderment. 1.5 Distinct constraints of composites Distinct inhibitions of composites are as listed below. Composites aren’t economical if the volume of engenderment is less Mechanical characterization of a composite structure is more intricate than that of a metal structure. Composites materials are not isotropic, that is, their properties are not same in all the directions. So they require more material
• Prestressed concrete is a modern material in which the stresses resulting from external loads are counteracted to a desired degree by introducing internal stresses of a suitable magnitude. • In reinforced concrete members, the prestress is commonly introduced by tensioning the steel reinforcement. • The apparent tensile strength of a material like concrete, which is strong in compression but weak in tension, is increased by application of permanent compressive stresses. • ¬¬¬¬Once the initial compression has been applied, the resulting material has the features of ductile high-strength steel when subject to tension forces and high-strength concrete when subjected to any compression forces. The tensile strength of the material increases because the subsequent application of tensile stress must nullify the compressive prestress.