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Physical and mechanical characteristics of the low modulus fibers were carefully investigated. Using a three point bending test method, the flexural behavior (flexural strength and toughness) of the ECC specimens from the current investigation was investigated.
Equally crucial to a structure’s ability to withstand applied stresses is its ability to withstand weathering action, chemical attack, abrasion, and other degrading processes over the course of its service life with the least amount of maintenance.
Although concrete has several benefits in terms of its mechanical properties and the cost-effectiveness of construction, the material’s brittle behavior continues to be a greater disadvantage for seismic and other applications where flexible behavior is primarily necessary.
However, the creation of polypropylene fiber-reinforced concrete (PFRC) recently offered a scientific foundation for addressing these shortcomings.
The global low modulus polypropylene fiber market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
RTP Company introduces novel low-modulus PP compounds with cellulose fiber reinforcement. The latest addition to the Eco Solutions product range from the world’s leading custom designed thermoplastics compounder, RTP Company, is a new line of cellulose fiber reinforced polypropylene (PP) compounds.
By delivering favorable performance and economics to a wide range of durable applications, these compounds, which make use of Weyerhaeuser’s Thrive renewable cellulose fiber obtained from trees grown in sustainably managed forests, will facilitate the design and production of environmentally friendly products.
These compounds are ideal for structural applications and can be reinforced with cellulose fibers to boost strength, stiffness, and thermal performance while supplying desired eco-friendly, renewable content.
Comparatively speaking to other natural fibers like wood, hemp, and sisal, as well as natural fillers like wheat straw and wood flour, cellulose fiber offers greater strength and stiffness, a constant color, superior processability, a little odor, and a steady supply.
Low modulus Polypropylene fiber is known for its ability to heal itself. During their lifespan, concrete structures are prone to cracking. At various stages of their service life, cracks can be caused by a variety of factors, such as plastic and drying shrinkage at an early age or freeze/thaw cycles at a long-term stage.
Limiting cracking can be accomplished in a number of ways, such as by using a sufficient number of steel bars or fiber reinforcement through the use of an appropriate mix design. However, some kinds of cracks are still to be expected.
The structure’s durability is put in jeopardy, and its service life is shortened, as a result of developed cracks in the concrete matrix that create pathways for aggressive agents like chlorides. Concrete cracks must therefore be monitored, controlled, and fixed. Because cracks are not always visible or accessible, it may not always be possible to repair them.
In Europe, repairs also account for half of the annual construction budget. In addition, the loss of production and the occurrence of traffic jams result in indirect costs associated with concrete crack repair. Concrete’s inherent capacity to heal itself to a certain level extends its service life, making it a highly beneficial material despite its vulnerability to cracking. The term “self-healing” of concrete refers to this time-dependent occurrence.
Utilizing concrete with discontinuous and randomly dispersed fibers to narrow the crack width and thus provide sufficient support for any kind of self-healing procedure is a well-known method for controlling the opening of cracks. The bridging effect provided by the fibers will effectively control and restrain the opening of each individual crack when a crack occurs in the matrix and the fibers that are bridging the cracks begin to act.
Low modulus Polypropylene Fiber Reinforced Concrete, or PFRC, is tougher and has a higher tensile strength than regular concrete because of the fibers and matrix. Due to the fibers’ low modulus of elasticity, the increase in strength is not significant.
The compressive strength and modulus of elasticity of concrete are typical properties that define its structural integrity. As a reliable condition indicator for in-service structures and a design factor for structures, the elastic modulus of concrete is of great interest. The static and dynamic behavior of structural elements can be used to determine it.
Additionally, significant deterioration and structural cracks have a direct impact on it. Dynamic elastic properties like resonant frequencies, mode shapes, and damping loss factors will change if the structure’s mass, stiffness, or damping properties are changed directly.