Advantages And Disadvantages Of Ferrocement (FRC)

However, the absence of plastic deformation does not mean that composites are brittle materials like monolithic ceramics. The heterogeneous nature of composites result in complex failure mechanisms which impart toughness. Fiber-reinforced materials have been found to produce durable, reliable structural components in countless applications. The unique characteristic of composite materials, especially anisotropy, require the use of special design

Steel-reinforced concrete is a widely used structural material. The effectiveness of the steel reinforcement depends on the bond between the steel reinforcing bar and the concrete. Reinforced concrete is a composite material in which concrete 's relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength and ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars and is usually embedded passively in the concrete before it sets. Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and

The recent rise in terrorist attacks around the world and use of missiles, rockets, ballistic, nuclear weapons, Hydrogen bombs there is huge competition in power show to project in front of the world threatening, feel of insecurity and disturbing the mindset of people by announcing nuclear weapons, and trial testing a challenge for new generation, The buildings currently offer little in the way of protection from explosions. Those protection needs the desired level of protection the building must provide to its occupants or its ability to function has made protection point of view promoted fast research and development of new construction materials to necessarily enhance the resistance of buildings and infrastructures

Furthermore, flax fiber modulus is comparable to that of glass but has a lower density, this means that flax fibers actually have a higher specific stiffness than glass fibers. The excellent mechanical properties of flax, combined with the added functionalities they bring, make them a very attractive potential material for fiber reinforced composites. Their remarkable advantages compared with those conventional inorganic man-made fillers enhance their commercial and research

Fly ash offers both environmental advantages and also improves the performance and quality of concrete. It affects the plastic properties of concrete by improving workability, reducing water demand, segregation and bleeding and lowers heat of hydration increases the strength, reduces permeability, reduces the corrosion of steel, increases sulphate resistance, and reduces alkali aggregate reaction. It reaches its maximum strength more slowly than concrete made with the port land cement. Also, Concrete is a relatively brittle material, when subjected to normal stresses and impact loads. The tensile strength of concrete is less due to widening of micro-cracks existing in concrete subjected to tensile stress. Due to presence of fiber, the micro-cracks are arrested. The introduction of fibers is generally taken as a solution to develop concrete in view of enhancing its flexural and tensile strength. Fiber reinforced concrete is a short discrete, uniformly dispersed and randomly oriented suitable fibrous material used to increase structural integrity. The amount of fibers added to concrete mix is measured as percentage of the total volume of composites. Aspect ratio (l/d) is calculated by dividing fiber length (l) by its diameter

Composites, the wonder materials are becoming an essential part of today’s materials due to their advantages such as low weight, corrosion resistance,

Fly ash cement had a special characteristic which is its can improves the strength, durability, chloride and sulfate resistance properties of the concrete. Furthermore, the fly ash cement had also improved the consistency and resistance to segregation and bleeding. Besides that, they will be likely to have a slower setting time which is an advantageous when in warmer weather conditions.

Glass-fibre reinforced plastic (GFRP) can be designed in many ways depending upon the requirements, specifications and services. Therefore with variety of tasks, it’s properties like temperature range, electrical insulation, resistance to corrosion and abrasion and flammability also varies. A lot of applications of Glass-fibre reinforced plastic (GFRP) need good strength which can be tensile , flexural, compressive or impact depends upon the application. The surface finish of this composite material can be smooth or rough in different applications. The colours used in this applications can be moulded in. Parts made from Glass-fibre reinforced plastic (GFRP) can be simple, complex, large or small.

Examined are multiple articles that conduct research on carbon fiber in circumstances in which, if positive results are found, encourage the development and integrating of carbon fiber into common civil engineering practices. Gomez et al examines the practice of wrapping sheets of carbon fiber around existing structural support beams in the hope of increasing flexural capacity and overall tensile strength. The implementation of carbon fiber into reinforced concrete due to steel’s corrosive properties is discussed. May et al’s study on patching structural fractures with carbon fiber materials rather than steel shows positive test results by slowing the growth of the fracture. Cholake et al’s article conducts research on a specific type of carbon fiber material, short milled carbon fiber. Short milled carbon fiber was found to have increased the strength of the material significantly in addition to reducing the material’s risk of failure due to cracking under tension. This paper discusses carbon fiber’s ability to positively enhance the current standards of structural integrity in civil engineering practices.

However, it is weak in tension as the cement holding the aggregate in place can crack, allowing the structure to fail. Reinforced concrete solves these problems by adding either meta reinforcing bars, steel fibers, glass fiber, or plastic fiber to carry tensile loads.

Abstract. Considerable network of transportation infrastructures such as highways, rails, and so forth are key providers to economic growth and productivity of countries. Consecutively, Reinforced Concrete (RC) is the predominant construction materials in constructing many of these infrastructures. RC is a unique construction material which allows flexible design layouts and offers safe bending and torsion to satisfy design requirements. However, being exposed to harsh environment and contamination such as salts, acid rain, distilled water, carbonation, sulphur and so on are the reasons for deterioration, thus significantly impacting the performance of these structures. Furthermore, the deterioration of these structures is not only a

Abstract: Advancement in recent years on the efficiency of glass fiber-reinforced polymer (GFRP) in production and cost benefits have increased their use as alternative means to steel rebar in bridge deck bases. The purpose in applying rebar is to increase the tensile strength of concrete. Considering the versatility of bridges there are many factors that need to be analyzed when choosing whether to use steel rebar or GFRP material such as: cost, tensile strength, and weather resistance. Stress-strain graphs were calculated, graphed, and analyzed to determine the yield tensile strength and stiffness of steel rebar and GFRP. Data collected from alkaline bath tests were graphed and analyzed to determine the thermal and corrosion resistance of each material. Costs per square inch of each material were also compared as well as each materials quality and life expectancy. The results of the conducted test analysis found the GFRP to have greater thermal resistance, lower cost, and higher life expectancy than the steel rebar, however the steel rebar’s stiffness was found to be about six times larger than the GFRP’s. These results suggest that the advancements in GFRP can provide longer lasting bridge structures and will change the future of construction and restoration of bridges.

FRP composites having superior material properties when compared with metals, improved corrosion resistance, fatigue resistance, less weight to strength ratio and high fracture toughness. Hence GFRP composites frequently used

Mostly researchers have used galvanized iron as fibre to study the effect of fibre on

The research seeks to compare the difference in measurement of flexural strength of palm kernel shell (PKS) concrete, using direct and indirect methods (beam and splitting cylinder specimen).The Palm kernel shell (PKS) was subjected to various physical tests and values obtained are as follows; specific gravity of Palm kernel shell (PKS) 1.3, Aggregate impact value 10.23.The Concrete was cast using two mix ratios 1:1.5:3 and 1:2:4. The concrete cubes, cylinders, and beams were crushed at 7, 14 and 28days in other to determine the compressive strength and flexural strength of the concrete for the various mixed. The 28th day compressive strength was 12.30N/mm2 and 20N/mm2, for the two mixed ratio respectively. The 28th day flexural strength was 2.03N/mm2 and 1.10N/mm2 for the beam and cylinder specimen respectively. The student t-test showed that there is no significant difference between the tensile strength measured using direct and indirect