{"id":1479,"date":"2024-11-28T06:02:12","date_gmt":"2024-11-28T06:02:12","guid":{"rendered":"https:\/\/concretefiberhub.com\/?p=1479"},"modified":"2025-01-07T03:31:02","modified_gmt":"2025-01-07T03:31:02","slug":"3-loai-soi-tot-nhat-cho-vat-lieu-composite-gia-cuong-soi","status":"publish","type":"post","link":"https:\/\/concretefiberhub.com\/vi\/3-loai-soi-tot-nhat-cho-vat-lieu-composite-gia-cuong-soi\/","title":{"rendered":"3 lo\u1ea1i s\u1ee3i t\u1ed1t nh\u1ea5t cho v\u1eadt li\u1ec7u composite gia c\u01b0\u1eddng s\u1ee3i"},"content":{"rendered":"
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\u00a0Fiber-reinforced composites are designed to provide materials with high specific strength and modulus. Fiber types for fiber-reinforced concrete exist in many different sizes, forms, colors, and flavors.<\/div>
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Fiber types<\/strong><\/h3>

Fiber types for fiber-reinforced concrete exist in many different sizes, forms, colors, and flavors.<\/p>

Here are some examples of fiber types:<\/p>

Macro-Synthetic Fibers: Macro synthetic fibers, also known as \u2018structural\u2019 synthetic fibers, are made up of a mixture of polymers and were designed to replace\u00a0steel fibers\u00a0in certain applications.<\/p>

Micro-Synthetic Fibers: Microfibers are utilized in concrete to prevent shrinkage fractures caused by plastic shrinkage. Plastic shrinkage fractures form whenever the concrete is still soft or movable. The loss of moisture at the concrete\u2019s surface is the most common cause of these cracks.<\/p>

Poly-Vinyl Alcohol (PVA) Fibers: Wet spinning produces high-strength polyvinyl alcohol fiber with a high modulus polyvinyl alcohol (PVA) as the primary raw material.<\/p>

Steel Fibers: Steel fiber is a type of metal fiber that is used to strengthen structures.<\/p>

Steel & Micro\/Macro Blends: These mixes assist to reduce plastic shrinkage cracking while simultaneously giving concrete with increased toughness and post-crack load bearing capability that can only be reached with steel and macro-synthetic fibers.<\/p>

Glass Fibers: Glass fibers allow the production of extremely thin parts with high tensile strength. When compared to traditional steel-reinforced concrete panels, glass-reinforced concrete (GRC) panels lower the weight and thickness of the concrete by up to ten times.<\/p>

Specialty Fibers: Optical fibers with at least one specific feature that differentiates them from normal fibers are known as specialty optical fibers.<\/p>

Cellulose fibers:\u00a0are made from processed wood pulp or cotons, are used to regulate and mitigate plastic shrinkage cracking in the same way that micro-synthetic fibers are. Cellulose-based fibers are of two types, regenerated or pure cellulose such as from the cupro-ammonium process and modified cellulose such as the cellulose acetates.<\/p>

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Commom types of Fiber-reinforced composites\/FRC<\/h3>

Any construction material made up of two or more constituent elements with differing physical qualities is called a fiber-reinforced composite.\u00a0Fiber-reinforced composites\uff08or FRC\uff09\u00a0are designed to provide materials with high specific strength and modulus.<\/p>

1.Fiber reinforced metal matrix composites (MMCs)<\/h4>

Metal matrix composites (MMCs) are a type of lightweight, high-specific strength material used in a number of industries, particularly automotive, aerospace, and thermal management.<\/p>

Fiber-reinforced metal matrix composites provide a diverse set of material qualities that can be used to satisfy a variety of design and application needs. They mix a fiber\u2019s strength and modulus with a matrix\u2019s flexibility and oxidation resistance.<\/p>

Dispersion strengthening and dislocation blocking are two ways that the particles improve the mechanical characteristics of a matrix.<\/p>

Fiber reinforcement, on the other hand, joins with the matrix to produce a strong composite body. The fibers carry the majority of the applied stress and aren\u2019t usually thought of as dislocation motion barriers.<\/p>

When particles are used as reinforcements, they provide the material isotropic qualities, whereas whiskers and fibers give it some directionality. In the direction parallel to the axis of the fibers, the characteristics of a \ufb01ber composite are superior than those in the transverse direction.<\/p>

Most common application areas of composite reinforced metal matrix materials:<\/strong><\/p>

1. Pushrods for racing engines
Pushrods for valves in engines are made of aluminum MMC reinforced with fibers. Al2O3 fibers are employed as reinforcing material, whereas aluminum alloys are used for the matrix. Engine valve pushrods manufactured of alumina MMC offer a 25% better flexion stiffness and a twice larger absorption capacity than similar components made of ordinary steel.<\/p>

2. Carbide drills
The toughest and most brittle of the drill bit materials is carbide (Carb). It\u2019s mostly utilized for production drilling, which necessitates the employment of a high-quality tool holder and equipment. It should not be used in drill presses or hand drills.<\/p>

3. Tank armors
Gradient MMCs have a long history of application in military systems. Gradient MMCs, for example, can be employed as protective armor plates on tanks and armored vehicles due to their constant dispersion of ceramic reinforced particles.<\/p>

4. Automotive industry \u2013 disc brakes, driveshaft, engines.
Carbon fiber reinforced polymer matrix composite is the primary material used in the creation of the body of certain extremely costly sports vehicles, such as Bugatti.<\/p>

5. Aircraft components \u2013 structural component of the jet\u2019s landing gear.
The landing gear, also known as the undercarriage, is a complicated system that includes structural elements, hydraulics, energy absorption components, brakes, wheels, and tires. High-strength steel and titanium alloy are the most often utilized materials for landing gear because they offer high static strength, excellent fracture toughness, and fatigue strength.<\/p>

The major purposes of landing gear, which connects the aircraft\u2019s basic structure to its undercarriage, are to allow the aircraft to taxi, land safely, and take off, as well as to sustain the aircraft for the rest of the ground operation.<\/p>

6. Bicycle frames
Bicycles have long been a part of daily life. It is also an essential form of transportation. Bicycle frames are usually made by welding metal pipes composed of iron-based materials, aluminum, or titanium, but more recently, FRP pipes made from carbon fibers or aramid fibers are used to build a higher-quality or lighter-weight bicycle frame. To distribute the load, most bicycles nowadays are made of heat treated alloy steel, aluminum, or titanium alloy tube.<\/p>

FRP pipes and metal joints or lugs are bonded together by an adhesive in the structure of a FRP pipe bicycle frame, but FRP frames with FRP lugs are preferred when attempting to lighten or obtain required frame characteristics, such as mechanical strength and rigidity, best suited to a particular use.<\/p>

7. Space systems
FRCs are utilized in aerospace vehicles, launch vehicles\/spacecraft for space projects, and in the sector of sports and games. Only FRCs can provide the necessary strength-to-weight ratio while still maintaining all of the standards.<\/p>

The use of fiber-reinforced composites (FRC) in industrial and clinical applications is expanding in order to sustain growth in all areas of reducing technology. FRCs have received a number of attention in the chemicals industry and other industries.<\/p>

Fiber-reinforced ceramic matrix composites (CMCs)<\/strong><\/h4>

Ceramic matrix composites (CMCs) have become more important in industry as a result of their unique properties. Ceramic matrix composites (CMCs) are a form of composite material in which the reinforcement (refractory fibers) and matrix material are both made of ceramic. They were created to address the single-phase ceramic materials\u2019 lack of durability. Ceramic matrix composites use ceramic reinforcement in a ceramic matrix to achieve improved characteristics.<\/p>

1. Aerospace sector (gas turbines, structural re-entry thermal protection)
Ceramic materials offer unique qualities such as high-temperature capabilities, high stiffness and strengths, and superior oxidation and corrosion resistance, they are becoming increasingly significant in aircraft applications.<\/p>

When used for high-temperature and ultra-high-temperature ceramics applications, ceramic materials have lower densities than metallic materials, making them excellent candidates for light-weight hot section components of aircraft turbine engines, rocket exhaust nozzles, and thermal protection systems for space vehicles.<\/p>

Because of their high-temperature capacity (high melting point), high stiffness and strength, and great resistance to oxidation and corrosion, ceramics are key materials for aeronautical applications. Ceramic materials also have lower densities and, as a result, greater specific strengths than metallic materials.<\/p>

2. The energy sector (heat exchangers, fusion reactor walls)
Ceramic matrix composites (CMCs) are widely employed in the aerospace and energy sectors (gas turbines, structural re-entry thermal protection) (heat exchangers, fusion reactor walls).
Radiant heater tubes, heat exchangers, heat recuperation, gas and diesel particle filters, and components for land-based turbines for power production are only a few examples of products used in the energy and environmental industries.<\/p>

These applications require a joint either permanent or temporary between CMC components with surrounding materials.<\/p>

Ceramics have stronger wear resistance, mechanical qualities, and reduced stress on the neighboring tooth at the restoration-tooth margin, which is one difference between ceramics and composite materials. Inlays, cusp coverage restorations such as crowns and on lays, and extremely attractive veneers are all possible with ceramics.<\/p>

Boat hulls, swimming pool panels, racing car bodies, shower stalls, bathtubs, storage tanks, and imitation granite and cultured marble sinks and countertops are just a few examples of composite materials utilized in buildings, bridges, and constructions. They\u2019re also becoming more common in general-purpose automobile applications.<\/p>

3. Fiber-reinforcedd carbon\/carbon composites (C\/C)<\/h4>

Carbon fiber reinforced carbon matrix composites (C\/C composites) have developed as one of today\u2019s most advanced and promising engineering materials.
Carbon fibers and carbon matrices are used to make carbon\/carbon composites.<\/p>

To sustain the rigors of harsh environments, carbon\/carbon composites utilize the strength and modulus of carbon fibers to reinforce a carbon matrix. Carbon\/carbon composites have proven to be reliable and cost-effective in systems, particularly when several components in an assembly may be replaced with a single-piece carbon\/carbon composite design.<\/p>

\u25cf Furnace fixturing
The applications for C\/C material as fixtures and grids in heat-treating applications are practically endless. Matching the material\u2019s capabilities with the manufacturing need, like with all other advanced technology solutions, is an essential starting point.<\/p>

\u25cf Heatshields
In an inert atmosphere, carbon\/carbon (C\/C) composites show better high temperature strength. Strength and stiffness, as well as fracture toughness, are all features important to consider. High-temperature oxidation resistance, frictional abilities, and thermal conductivity.<\/p>

\u25cf Load plates
The bending moment is calculated by multiplying the span length by the weight to be supported by eight. The maximum bending moment would be 12 x 600\/8 = 900 foot-pounds for a beam spanning a 12-foot room and sustaining a weight of 600 lbs.<\/p>

\u25cf Heating elements
Heat transfer in any composite that consists of an orthogonal arrangement of fibers within a matrix is controlled by the thermal conductivities of the two components, their relative volume fraction, and their geometrical arrangement.<\/p>

When the matrix contains porosity (cracks or pores), it is necessary to account for a third phase because a pore is a barrier to heat flow, and its presence and distribution has a significant impact on heat transfer. The combination of the solid thermal conductivity and radiative conductivity provides the effective thermal conductivity of the composite C\/C as a function of temperature.<\/p>

\u25cf And X-ray targets
Non-destructive processes such as x-ray tomography, which can present not only information about density and porosity but also the 3D vision with identification of closed and open pores, as well as a precise location of these defects, are of great interest to the industry because they can present not only information about density and porosity but also the 3D vision with identification of closed and open pores, as well as a precise location of these defects, are of great interest to the industry.<\/p>

To clearly highlight cracks and holes, X-ray tomography was employed to reconstruct the microstructure of a carbon\/carbon (C\/C) composite.<\/p>

\u25cf Rocket nozzles must withstand an extremely rapid temperature increase in a highly corrosive atmosphere while maintaining a high degree of integrity.
The conflict between transport of reaction and heterogeneous mass transfer, associated with reactivity differences between constituent phases, is addressed in the modeling of melting of carbon\/carbon (C\/C) composites used as rocket engine hot parts.<\/p>

Carbon\/Carbon (C\/C) composites have a number of relative advantages, including a high ratio of mechanical characteristics to density at high temperatures, low thermal expansion, and cost-effective manufacturing of small and large parts.<\/p>

The flow in the core of the nozzle is very turbulent under rocket-firing conditions, and so are the boundary layers. Because of the high temperature, homogenous reactions in the gas phase occur quickly, and the gas mixture is always in a state of chemical equilibrium.<\/p>

4. Fiber-reinforced polymer matrix composites (PMCs) or polymeric composites<\/h4>

PMCs are made up of a continuous phase of organic polymers and a dispersed phase of reinforced fibers. Fracture toughness, tensile strength, and stiffness are all controlled by the reinforcing fibers.<\/p>

Polycarbonate, polypropylene, and polyethylene are common thermoplastic materials utilized in the manufacture of medical plastic items, as well as the formulation of specialized polymers to satisfy particular medical device applications.<\/p>

By providing the following benefits, polymers and polymer matrix composites have helped enhance the quality of healthcare delivery while also saving countless lives: Making it easier to maintain sterility. Polymers make it possible to make affordable, disposable tools and devices including syringes, catheters, and surgical gloves.<\/p>

\u25cf medical devices;
\u25cf such as MRI scanners,
\u25cf C scanners,
\u25cf X-ray couches,
\u25cf mammography plates, tables,
\u25cf surgical target tools,
\u25cf wheelchairs,
\u25cf prosthetics.<\/p>

Why is FRC used?<\/strong><\/h3>

Fiber-reinforced concrete has higher tensile strength as compared to non-reinforced concrete. It improves the concrete\u2019s long-term durability. It slows the spread of cracks and improves impact resistance.<\/p>

Fiber-reinforced concrete enhances freezing and thawing resistance. It consists of cement, mortar, or concrete mixed with appropriate fibers that are discontinuous, distinct, and uniformly distributed.<\/p>

Fibers are commonly used in concrete to prevent cracking caused by shrinkage of the plastic and drying shrinkage. They also limit the permeability of concrete, resulting in less water bleeding.<\/p>

\u25cf Tensile strength
The distribution and orientation of steel fibers inside the concrete matrix determine the tensile behavior of ultrahigh-performance fiber-reinforced concrete (UHPFRC).<\/p>

The development of ultrahigh-performance fiber-reinforced concrete (UHPFRC) is the result of years of study into how to increase the performance of high-strength concrete in tension.<\/p>

The presence of steel fiber is the most major element controlling the tensile behavior of UHPFRC. The addition of steel fiber to UHPFRC enhances its flexibility, strength, and fracture resistance.<\/p>

\u25cf Increases the concrete\u2019s durability
The capacity to survive a long time without noticeable degradation is referred to as durability. A long-lasting substance benefits the environment by saving resources, decreasing waste, and lowering the environmental effect of maintenance and replacement.<\/p>

The development of replacement construction materials depletes natural resources and has the potential to pollute the air and water. Concrete\u2019s durability may be characterized as its capability to handle corrosion, chemical damage, and abrasion while preserving its desired engineering qualities.<\/p>

\u25cf Reduces crack growth and increases impact strength
The cracks are an issue because they allow for the possibility of moisture problems and reinforcement corrosion, which reduces the structure\u2019s load-bearing capability. When concrete cracks, the structure\u2019s durability suffers as well.<\/p>

In reinforced concrete constructions, crack development is a prevalent issue that reduces the structure\u2019s endurance. When the concrete breaks, the tensile pressures are carried by the tension reinforcement rather than the concrete.<\/p>

By utilizing suitable reinforcement, crack widths may be restricted, and one option is to combine tensile and crack reinforcement. The purpose of the reinforcement is to spread the fractures over the cross-section, resulting in a large number of minor cracks rather than a few larger cracks.<\/p>

\u25cf Fiber-reinforced concrete improves resistance against freezing and thawing
The freeze-thaw cycle is a primary source of damage to concrete and brick structures. Water fills the gaps in a solid, porous material, freezes, and expands, causing freeze-thaw damage. Only a quality concrete sealer can protect your concrete from freeze\/thaw damage.<\/p>

Types of most often used fibers in FRC<\/h3>

\u25cf S\u1ee3i th\u00e9p d\u00f9ng cho b\u00ea t\u00f4ng s\u1ee3i th\u00e9p (FRC)
B\u00ea t\u00f4ng xi m\u0103ng th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 c\u00f3 t\u00ednh ch\u1ea5t ch\u1ecbu k\u00e9o k\u00e9m, khi\u1ebfn n\u00f3 d\u1ec5 b\u1ecb u\u1ed1n cong trong c\u00e1c c\u1ea5u ki\u1ec7n k\u1ebft c\u1ea5u. \u0110\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t b\u00ea t\u00f4ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c c\u00f4ng tr\u00ecnh ch\u1ee9a n\u01b0\u1edbc ho\u1eb7c d\u1eabn n\u01b0\u1edbc, b\u00ea t\u00f4ng k\u1ebft c\u1ea5u c\u1ea7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf th\u00e0nh m\u1ed9t kh\u1ed1i li\u1ec1n m\u1ea1ch kh\u00f4ng n\u1ee9t.<\/p>

Vi\u1ec7c s\u1eed d\u1ee5ng s\u1ee3i th\u00e9p gia c\u01b0\u1eddng trong b\u00ea t\u00f4ng gi\u00fap n\u00e2ng cao kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a c\u00e1c c\u1ea5u ki\u1ec7n k\u1ebft c\u1ea5u tr\u01b0\u1edbc c\u00e1c \u00e1p l\u1ef1c l\u1edbn. S\u1ee3i th\u00e9p gia c\u01b0\u1eddng b\u00ea t\u00f4ng gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u n\u00e0y d\u01b0\u1edbi m\u1ecdi lo\u1ea1i t\u1ea3i tr\u1ecdng. \u0110\u1ec3 n\u00e2ng cao \u0111\u1ed9 b\u1ec1n k\u00e9o trong c\u00e1c c\u00f4ng tr\u00ecnh b\u00ea t\u00f4ng, b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i th\u00e9p mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t v\u00e0 ch\u1ed1ng lan truy\u1ec1n v\u1ebft n\u1ee9t t\u1ed1t h\u01a1n.
B\u00e3i \u0111\u1ed7 xe, s\u00e2n ch\u01a1i, \u0111\u01b0\u1eddng b\u0103ng s\u00e2n bay, \u0111\u01b0\u1eddng l\u0103n, nh\u00e0 ch\u1ee9a m\u00e1y bay b\u1ea3o d\u01b0\u1ee1ng, \u0111\u01b0\u1eddng ti\u1ebfp c\u1eadn v\u00e0 x\u01b0\u1edfng s\u1ea3n xu\u1ea5t \u0111\u1ec1u l\u00e0 nh\u1eefng v\u00ed d\u1ee5 v\u1ec1 \u1ee9ng d\u1ee5ng c\u1ee7a s\u00e0n b\u00ea t\u00f4ng s\u1ee3i th\u00e9p.<\/p>

\u25cf S\u1ee3i PP d\u00f9ng cho FRC
\u0110\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i polymer t\u1ed5ng h\u1ee3p c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb hydrocacbon. B\u00ea t\u00f4ng c\u1ed1t s\u1ee3i polypropylene (PPFRC) \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb c\u00e1c s\u1ee3i polypropylene r\u1eddi r\u1ea1c c\u00f3 chi\u1ec1u d\u00e0i r\u1ea5t ng\u1eafn, \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u1ed1t th\u00e9p b\u00ean trong nh\u1eb1m c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a b\u00ea t\u00f4ng. Khi \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o ma tr\u1eadn b\u00ea t\u00f4ng, c\u00e1c s\u1ee3i n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c tr\u1ed9n trong th\u1eddi gian d\u00e0i h\u01a1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 ph\u00e2n t\u00e1n t\u1ed1i \u01b0u c\u1ee7a s\u1ee3i trong h\u1ed7n h\u1ee3p b\u00ea t\u00f4ng.<\/p>

\u25cf S\u1ee3i macrofiber d\u00f9ng cho FRC
S\u1ee3i v\u0129 m\u00f4, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u1ee3i k\u1ebft c\u1ea5u, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu t\u1ea3i tr\u1ecdng v\u00e0 do \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thay th\u1ebf v\u1eadt li\u1ec7u gia c\u01b0\u1eddng truy\u1ec1n th\u1ed1ng trong c\u00e1c \u1ee9ng d\u1ee5ng phi k\u1ebft c\u1ea5u, c\u0169ng nh\u01b0 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u ho\u1eb7c lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t s\u1edbm v\u00e0 n\u1ee9t mu\u1ed9n.<\/p>

N\u1ebfu kh\u00f4ng c\u00f3 s\u1ee3i c\u1ed1t l\u1edbn trong c\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n, c\u00e1c v\u1ebft n\u1ee9t n\u00e0y s\u1ebd lan r\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t k\u1ebft c\u1ea5u, th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn h\u01b0 h\u1ecfng. Khi s\u1ee3i c\u1ed1t l\u1edbn \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o c\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n, ch\u00fang s\u1ebd li\u00ean k\u1ebft hai b\u00ean v\u1ebft n\u1ee9t l\u1ea1i v\u1edbi nhau, ng\u0103n ch\u1eb7n v\u1ebft n\u1ee9t lan r\u1ed9ng. Thi\u1ebft k\u1ebf c\u00f3 g\u1edd ho\u1eb7c b\u1eadc thang gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u00e1m d\u00ednh v\u1edbi b\u00ea t\u00f4ng, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>

\u25cf S\u1ee3i PVA d\u00f9ng cho FRC
S\u1ee3i PVA (Polyvinyl alcohol) l\u00e0 lo\u1ea1i s\u1ee3i \u0111\u01a1n s\u1ee3i ph\u00e2n b\u1ed1 \u0111\u1ec1u trong ma tr\u1eadn b\u00ea t\u00f4ng, t\u1ea1o th\u00e0nh m\u1ed9t m\u1ea1ng l\u01b0\u1edbi s\u1ee3i \u0111a h\u01b0\u1edbng gi\u00fap ki\u1ec3m so\u00e1t s\u1ef1 co ng\u00f3t, ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 b\u1ea3o v\u1ec7 kh\u1ecfi hi\u1ec7n t\u01b0\u1ee3ng gi\u00e3n n\u1edf v\u00e0 co ng\u00f3t do nhi\u1ec7t. Lo\u1ea1i s\u1ee3i n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay th\u1ebf cho l\u01b0\u1edbi th\u00e9p h\u00e0n v\u00e0 c\u1ed1t th\u00e9p l\u00e0m v\u1eadt li\u1ec7u gia c\u1ed1 ch\u00ednh.<\/p>

\u25cf L\u01b0\u1edbi s\u1ee3i cho b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i
Thay v\u00ec s\u1eed d\u1ee5ng l\u01b0\u1edbi th\u00e9p, b\u00ea t\u00f4ng l\u01b0\u1edbi s\u1ee3i (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i) s\u1eed d\u1ee5ng s\u1ee3i l\u00e0m m\u1ed9t trong c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a c\u00f4ng th\u1ee9c ph\u1ed1i tr\u1ed9n. L\u01b0\u1edbi s\u1ee3i l\u00e0 gi\u1ea3i ph\u00e1p thay th\u1ebf m\u1edbi h\u01a1n so v\u1edbi l\u01b0\u1edbi th\u00e9p truy\u1ec1n th\u1ed1ng. Trong qu\u00e1 tr\u00ecnh tr\u1ed9n, c\u00e1c s\u1ee3i n\u00e0y \u0111\u01b0\u1ee3c th\u00eam v\u00e0o b\u00ea t\u00f4ng t\u01b0\u01a1i.<\/p>

Lo\u1ea1i b\u00ea t\u00f4ng ch\u1ee9a s\u1ee3i n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1ed5 v\u00e0 \u0111\u00f4ng c\u1ee9ng t\u1ea1i c\u00f4ng tr\u01b0\u1eddng theo c\u00e1ch t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u00ea t\u00f4ng th\u00f4ng th\u01b0\u1eddng. Lo\u1ea1i b\u00ea t\u00f4ng n\u00e0y d\u1ec5 thi c\u00f4ng v\u00e0 \u0111ang g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n quy tr\u00ecnh thi c\u00f4ng s\u00e0n.<\/p>

3 lo\u1ea1i s\u1ee3i n\u00e0o l\u00e0 t\u1ed1t nh\u1ea5t cho b\u00ea t\u00f4ng?<\/h3>

S\u1ee3i vi s\u1ee3i t\u1ed5ng h\u1ee3p<\/h4>

Trong 10 gi\u1edd \u0111\u1ea7u ti\u00ean sau khi \u0111\u1ed5, b\u00ea t\u00f4ng s\u1ee3i si\u00eau m\u1ecbn ch\u1ee9a s\u1ee3i polypropylene gi\u00fap gi\u1ea3m hi\u1ec7u qu\u1ea3 hi\u1ec7n t\u01b0\u1ee3ng co ng\u00f3t s\u1edbm. Nguy\u00ean nh\u00e2n l\u00e0 do c\u00e1c s\u1ee3i n\u00e0y c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 m\u1ed9t l\u01b0\u1ee3ng n\u01b0\u1edbc nh\u1ea5t \u0111\u1ecbnh, t\u1eeb \u0111\u00f3 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh bay h\u01a1i. C\u00e1c s\u1ee3i n\u00e0y ph\u00e1t huy t\u00e1c d\u1ee5ng t\u1ed1t h\u01a1n trong vi\u1ec7c gi\u1ea3m thi\u1ec3u c\u00e1c v\u1ebft n\u1ee9t do co ng\u00f3t khi b\u00ea t\u00f4ng c\u00f2n d\u1ebbo v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi c\u1ed1t th\u00e9p b\u00ea t\u00f4ng.<\/p>

\u25cf \u0110\u1ec3 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t do co ng\u00f3t c\u1ee7a nh\u1ef1a
S\u1ef1 bay h\u01a1i v\u00e0 s\u1ef1 th\u1ea5m h\u00fat l\u00e0 hai c\u01a1 ch\u1ebf khi\u1ebfn b\u00ea t\u00f4ng t\u01b0\u01a1i h\u1ea5p th\u1ee5 n\u01b0\u1edbc, d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng co ng\u00f3t d\u1ebbo. \u0110\u1ed1i v\u1edbi c\u00f4ng tr\u00ecnh d\u1ef1 ki\u1ebfn, c\u1ea7n gi\u1eef cho t\u1ed5ng l\u01b0\u1ee3ng n\u01b0\u1edbc trong h\u1ed7n h\u1ee3p b\u00ea t\u00f4ng \u1edf m\u1ee9c th\u1ea5p nh\u1ea5t c\u00f3 th\u1ec3.<\/p>

\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 cao c\u00e1c lo\u1ea1i c\u1ed1t li\u1ec7u c\u1ee9ng, r\u1eafn, kh\u00f4ng b\u1ecb b\u00e1m l\u1edbp \u0111\u1ea5t s\u00e9t, c\u0169ng nh\u01b0 c\u00e1c ph\u1ee5 gia gi\u1ea3m n\u01b0\u1edbc thu\u1ed9c lo\u1ea1i trung b\u00ecnh ho\u1eb7c cao.<\/p>

S\u1ee3i kim lo\u1ea1i\/S\u1ee3i th\u00e9p<\/h4>

S\u00e0n b\u00ea t\u00f4ng c\u1ed1t s\u1ee3i th\u00e9p c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c v\u1ebft n\u1ee9t tr\u00ean b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u00f4ng c\u1ee9ng v\u00e0 mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c t\u1ed1i \u0111a tr\u01b0\u1edbc c\u00e1c t\u1ea3i tr\u1ecdng l\u1edbn, c\u1ea3 \u0111\u1ed9ng v\u00e0 t\u0129nh.<\/p>

S\u1ee3i th\u00e9p mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch, bao g\u1ed3m:<\/p>