Waste Plastic Fiber Research Articles

Eco-Friendly Recycled Aggregate Concrete

This article aims to study the mechanical properties of concrete containing the recycled and crushed aggregate instead of normal aggregate separately, and reinforced with volumetric ratios equal to (0.25,0.5,0.75,1,1.25 and 1.5)% of plastic fibers, which produced by cutting the plastic water bottles as a partial replacement from volume of coarse aggregate. Preliminary results showed that the compressive strength of recycled aggregate concrete(RAC) increased with increasing the waste plastic fibers (PET) more than the observed values of crushed aggregate concrete(CAC), while the results showed that the splitting tensile strength of concrete samples containing recycled aggregate have a higher splitting tensile strength than those containing the crushed aggregate. On the other hand, it was noted that the increasing in the proportions of PET from (0.25-1) % showed an increase in compressive and splitting tensile strength, but after the ratio of PET used equal to (1% ), it was observed a decreasing in both of compressive and splitting tensile strength.

The Effects of adding Waste Plastic Fibers on the Mechanical Properties and Shear Strength of Reinforced Concrete Beams

The concept of sustainability was developed in the last years and included the construction industry to solve the issues that pertaining by high consumption of natural sources, environmental pollution and high amount production of solid wastes. On the other hand, the plastics generation is growing exponentially every year, especially, types of Polyethylene Terephthalate (PET) that are used to produce soft drinks bottles, this study attempts to apply the concept of sustainability and reduce the environmental pollution by cutting the plastic bottles (PET) as small fibers added to the ordinary concrete to improve the shear and tensile strength of reinforced concrete beams. For this purpose, the experimental work was carried out to study the effect of waste plastic fibers (PET) on the shear behavior of seven reinforced concrete beams with dimensions of (100×150×1200) mm that were designed to fail in shear, the fibers percentages that were used in this study are (0.25, 0.5, 0.75, 1, 1.25 and 1.5%). Also, the influence of Polyethylene Terephthalate (PET) fibers on the mechanical properties of concrete was studied such as: workability, compressive strength, splitting tensile strength, static modulus of elasticity and ultrasonic pulse velocity.

Producing of eco-friendly lightweight concrete using waste polystyrene particles as aggregates with adding waste plastic

This research includes studying the possibility of producing a new kind of No-fines concrete by replacing granules of coarse aggregates with grains results from the fragmentation of industrial waste of polystyrene. This replacing were with different volumetric proportions of coarse aggregate, and theses volumetric ratios were equal to (5%, 10%, 15% and 25%). Waste plastic fibers (WPFs) resulting from cutting of soft drinks bottles were added for strengthening this new kind of concrete. Mixing ratio was equal to (1:5) (cement: coarse aggregate) by weight. One reference mix was produced for comparative purpose. Compressive strength, flexural strength and density tests were conducted, it was examined three samples of each examination and taking the average. Compressive strength values of the new sustainable concrete were ranged from 10 MPa to 12.4 MPa at age of test equal to 28 days, while the average value of the density of this concrete at the same age reaches 1930 kg/m3. This average value of modulus of rupture was equal to 2.36 MPa at 28-day age test.

A Review Paper on Combined Effect of Waste Glass Powder and Plastic Fiber on the Properties of Concrete

A Review Paper on Combined Effect of Waste Glass Powder and Plastic Fiber on the Properties of Concrete

The effects of adding waste plastic fibers on some properties of roller compacted concrete

An attempt to produce of roller compacted concrete (RCC) improved by adding waste plastic fibers (WPFs) resulting from cutting the PET beverage bottles was recorded in this study. The method which is used for production of RCC is an approved design method for ACI committee (5R-207,1980)[1]. WPF was added by volumetric percentages ranging between (0.5 to 2 %) and reference concrete mix was produced for comparison reason. Many tests were conducted on the models produced by rolling compacted concrete like compressive strength, flexural strength, modulus of elasticity, dry density, water absorption and ultrasonic pulse velocity. The analysis of the results showed that the use of plastic waste fibers (1%) had led to improvement in the properties of each of the compressive strength and flexural strength compared with reference concrete. Results also showed that the addition of these, fibers increase water absorption and reduce the speed of Ultrasonic pulse velocity.

The Behaviour of Self Compacting Concrete With Waste Plastic Fibers When Subjected To Chloride Attack.

This paper outlines laboratory study on chloride resistance of waste plastic fibre reinforced self compacting concrete. Self compacting concrete mixes with varying percentages of waste plastic fibers like 0.0%,0.25%,0.5%,0.75%,1.00%,1.1%,1.2%,1.3% and 1.4% were developed for M40 grade of concrete. The mix proportion was done by NANSU method. The result of fresh property test satisfies the limits specified by EFNARC. The cubes and cylinders were immersed in 5% magnesium chloride solution for a period of 30 days, 60days and 90 days. The degree of chloride attack is determined by evaluating the reduction in compressive strength split tensile strength and percentage loss of weight of specimen. From the test results it is observed that maximum compressive strength and split tensile strength were achieved for 1% of plastic fibre. The chloride content is determined by Argentometric titration method. Percentage loss of weight, loss in compressive strength and chloride penetration have decreased as the percentage of fibre increased.

Impact strength, permeability and chemical resistance of concrete reinforced with metalized plastic waste fibers

This paper represents the results of experimental investigations of impact strength and durability properties of concrete reinforced with post-consumer metalized plastic waste (MPW) generated from the discarded food packaging plastics. The addition of MPW into the conventional concrete can extend a dual benefit of reduced hazards on the environment and improved mechanical and durability properties of concrete. The MPW films were shredded into the macro fibers of varying lengths of 5 mm, 10 mm, and 20 mm and mixed into the concrete by volume fractions from 0% to 2%. The test results showed excellent improvement of the impact resistance by concrete containing MPW fibers of 20 mm length compared to the conventional concrete. The resistance against acid and sulfate attack, chloride penetration, corrosion of concrete, water, and air permeability, and the resistance to the water sorptivity were improved due to the addition of 5 mm length short MPW fibers. For all test conditions, the maximum improvement was observed with the addition of 1% volume fraction of MPW fibers mixed into the conventional concrete.

MECHANICAL PROPERTIES FOR ORDINARY CONCRETE CONTAINING WASTE PLASTIC FIBERS

This study program has been conducted to investigate the influence of adding waste plastic fibers (WPF) resulting from manual cutting for bottles used in the conservation gassy beverage on different characteristics of ordinary concrete. Cutting plastic waste by volumetric rates ranging between (0.5%) to (2%) was approved. Reference mix was produced for comparison. Tests were conducted on the models produced from waste plastic fiber concrete like compressive strength, flexural strength and splitting tensile strength. The analysis of the results showed that the use of plastic waste fibers (1%) has led to improve the properties of flexural strength and splitting tensile strength compared with reference concrete .When the( 0.75%)WPF ratio improved the compressive strength as compared with the control specimen . Compressive strength in (28 days) with fiber ratio (0.75%) WPF is higher than equal (5.1%) from compressive strength in (28 days) of reference concrete. Volumetric ratio (1%) WPF can be also observed that each of the flexural strength and splitting tensile strength increases equal (12.5 and 12.5%) respectively, from flexural strength and splitting tensile strength for the reference mix at(28day).

Mechanical Properties And Flexural Behavior of reinforced Polymer Modified Concrete beams enhanced by Waste Plastic Fibers (WPF)

This research include the study of flexural behavior of polymer modified concrete beams containing waste plastic fiber (WPF). Fifteen reinforced concrete beams are moulded of (100*150*1300) mm dimension with different steel reinforcement ratio (ρ). These steel reinforcement ratio were (0.0038, 0.0207 & 0.0262). Styrene Butadine Rubber (SBR) was added as cement replacement by weight equal to (5%). Reinforced concrete beams classified in to five groups, each contains three beams with different (ρ) value. The first group conducted of reference concrete mix , the second group made with SBR modified concrete, while the three remaining groups were make by PMC containing (WPF) with volumetric ratio equal to (0.75, 1.25 & 1.75)%. This study includes compressive and flexural tests for concrete which was used in this research, load deflection relationships, the moment at mid-span with deflection and ductility were established. The results prove that, polymer modified concrete wich content waste plastic fiber has compressive and flexural strengths more than reference mixes as well as the PMC beams wich content waste plastic fiber have a stiffer response in terms of structural behaviour, more ductility and lower cracking deflection than those made by reference concretes and that refer to good role of styrene Butadiene Rubber (SBR) polymer and plastic fiber on the properties and behaviour of reinforced concrete beams.

Fresh and strength properties of concrete reinforced with metalized plastic waste fibers

This paper represents test results of workability and strength properties of concrete, reinforced with metalized plastic waste (MPW) resulting by discarded food packaging articles. Unlike the packaging articles like polypropylene terephthalate (PET) waste bottles and plastic carry bags; MPW is relatively unfit for effective recycling and contributes to the littering and expanding landfill areas causing environmental hazards. In this study, the feasibility of MPW fibers as reinforcing constituent for concrete is assessed by evaluating slump, compressive and splitting tensile strength and flexure strength. Films of MPW were shredded into 5mm, 10mm and 20mm long fibers and mixed in concrete from 0% to 2% by volume of mix. The test results demonstrated improved splitting tensile strength and ductility of concrete due to the addition of MPW fibers. Concrete subjected to axial compression exhibited large deformations at higher loads compared to the conventional concrete. However, the workability, compressive strength and flexural strength showed a negligible reduction at 1% dosage of MPW fibers.

The Effects of Adding Waste Plastic Fibers (WPFs) on Some Properties of Self Compacting Concrete using Iraqi local Materials

This study presents an experimental research of Self-Compacting Concrete (SCC) properties containing waste plastic fibers (WPF). Adding waste plastics which resulting from cutting PET bottles as fibers to SCC with aspect ratio (l/d) equal to (28). To illustrate the effects of WPFs on the SCC, the current study was divided into two parts, the first part shows the effect of adding plastic fibers on the properties of fresh SCC, which include the ability flow, spread, passing and resistance to segregation, and the second part to evaluate the properties of hardened (mechanical) destructive and non-destructive, which include compression strength, flexural strength and ultrasonic pulse velocity test. One reference concrete mix was conducted and eight mixes contain WPF has been producing self-compacting concrete mixers containing a different volumetric ratio of plastic fibers (Vf) % percentages (0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2) %. Three cubes samples were prepared for testing the compressive strength, three prisms were prepared for the test modules of rupture, one cylinder were prepared testing the modulus of elasticity. The experiments show that adding plastic fibers to SCC leads to an increase in the compression strength and modulus of rupture at 28-day as follows (42.30)% and (73.12)% respectively for mix ratio (1.5)% in comparison with the reference mix, which represent the best ratio of fibers, as such the results of testing the fresh concrete containing waste fibers showed that adding these fibers led a reduction in workability for SCC.

The Effect of Adding Waste Plastic Fibers on some Engineering Properties of Roller Compacted Concrete

This research includes producing compacted concrete by rolling method and the possibility for using in highway construction field with studying the influence of adding waste plastic fiber resulting from manual cutting for bottles used in the conservation gassy beverage on different characteristics of this type of concrete. For the purpose of selecting mix proportions appropriate for rolling compacted concrete (RCC). Approved design method for ACI-committee (5R-207 .1980) was selected for this research. Destroying plastic waste by volumetric rates ranging between (0.5%) to (2%) was approved. Reference mix was produced for comparison. Tests were conducted on the models produced from rolling compacted concrete like compressive strength, flexural strength and split tensile strength. The analysis of the results showed that the use of plastic waste fibers (1%) has led to improve the properties of each of the compressive strength and flexural strength and split tensile strength compared with reference concrete. Compressive strength in 28 days with fiber ratio (1%) is higher than (52.15%) from compressive strength in 28 days of reference concrete. It can be also observed that each of the flexural strength and split tensile strength increases by (17.86, 25.61)%, respectively, from flexural strength and split tensile strength for the reference mix

Recycled plastic waste fibers for reinforcing Portland cement mortar

Laboratory experiments were conducted to investigate the effects of recycled plastic (RP) waste fibers on the flexural strength, flexural toughness and plastic shrinkage cracking characteristics of Portland cement mortar. Parameters investigated include fiber content and fiber length and tests performed include flexure and plastic shrinkage tests. Experimental results showed a substantial increase in flexural toughness, about 26 to 61 times, and a considerable increase in flexural strength ranging from 6% to 84% of mortars reinforced with RP fibers compared to plain mortar. Test results also showed a significant reduction in width, and total area of plastic shrinkage cracks of slabs reinforced with an increased amount of RP fibers compared to control slabs without fibers. No plastic shrinkage cracks were observed on the surface of mortar slabs reinforced with 1.5% (by volume) of 50mm long, RP fibers. Besides reducing the cost of plastic waste disposal, this investigation recommends adding about 1.5% of locally produced; 50mm long recycled plastic fibers to ordinary cement mortar for improving the ductility and crack arresting mechanism of the mortar matrix.

The possibility of enhancing some properties of self-compacting concrete by adding waste plastic fibers

An attempt was carried out to develop some properties of self-compacted concrete (SCC) by adding waste plastic fibers (WPF) resulting from cutting beverage bottles. Many tests were conducted to investigate the effect of adding WPF on the fresh properties, whereas other tests were applied on that kind of concrete to study the effect of this type of waste on hardened properties. For this reason, different self-compacting concrete mixtures were designed at constant water-to-binder ratio of 0.35 and 490kg/m3 of binder content. The class F fly ash was replaced with cement as 25% by weight. The eighth designated plastic fiber contents of 0%, 0.25%, 0.5%, 0.75%, 1%, 1.25%, 1.5%, 1.75% and 2% by volume. The workability properties of self-compacting concrete mixtures were performed to slump flow diameter, T50 slump flow simultaneously, V-funnel flow at the same time, and L-box height ratio. The 7, 14 and 28-day compressive strengths of self-compacting concretes were also measured. Moreover, the 7, 14 and 28-day flexural strengths of concretes were also measured. The test results showed that the plastic fibers have adverse effect on the fresh properties of self-compacting concrete and improvement by hardened properties.

The Production of Economical Precast Concrete Panels Reinforced by Waste Plastic Fibers

This paper has discussed the effect of adding waste plastic fiber (PET) resulting from cutting the plastic beverage bottles by hand (which is used in Iraqi markets now) as a small fiber to the precast concrete panels. This research presents an experimental program for investigating rupture strength and impact resistance of precast concrete panels with different depths. Different volumes of fibers, i.e. 0%, 0.5%, 1.0% and 1.5% have been added as percentages of concrete by volume. The results show that the maximum volume of PET fiber for a desired rupture and impact resistance was 1.0%. The addition of waste PET fiber to the plain precast concrete panels has economical advantages .It tends to decrease the depth panel from (30 cm × 30 cm × 4 cm) to (30 cm × 30 cm × 3 cm) and the percentage of increase of rupture strength was 34.27% and the percentage of increase of impact resistance was 157.14% for reinforced concrete panels (30 cm × 30 cm × 3 cm) aged at 90-days compared with plain panels of (30 cm × 30 cm × 4 cm). In the impact test the visual observation is that the specimens of fiber reinforced precast concrete panel (FRPCP) have remained together in one piece though broken whilst plain concrete specimens have exhibited the total disintegration.

Influence of Embedded Waste-Plastic Fibers on the Improvement of the Tensile Strength of Stabilized Mud Masonry Blocks

AbstractThis paper highlights the results of an experimental investigation on the tensile strength behavior of plastic-fiber-reinforced soil performed to study the possibility of utilization of waste plastics in soil masonry blocks. Cylindrical specimens of raw soil and modified soil compacted at different pressure by varying the molding pressure from 1.25 to 7.5 MPa corresponding to a molding load from 10 to 60 kN are tested for split tensile strength and compressive strength. Raw soil is modified by adding a varying the amount of stabilizer (cement: 7.5, 10, and 15%), fiber types (made out of mineral water bottles and carry bags), fiber length (1 and 2 cm), and fiber percentage (0.1 and 0.2%). The results show that compared with raw specimens, a compacted reinforced cement stabilized specimen shows an increase of 4.5 times in its tensile strength. This is one of the major advantages of adding fibers to the compressed stabilized specimens. From the observations of failure pattern it can be concluded that...

Correlation Between Destructive And None-Destructive Tests on the Mechanical Properties of Different Cement Mortar Mixtures Incorporated Polyethylene Terephthalate Fibers.

Non-destructive tests have been widely used in engineering purposes especially in civil engineering. Yet it is not properly used to predict the mechanical properties of different cement mortar mixtures reinforced with plastic fibers (PET) made from waste plastic bottles. In this study, the pulse velocity was used to predict the mechanical properties of cement mortar mixtures reinforced with and without plastic fibers made from waste plastic fibers. The Pulse velocity was computed from samples of different cement mortar mixtures with different ratio of cement/sand. Then the desired mechanical properties of mortar samples were calculated from the laboratory tests. Then, the Pulse velocity results were correlated with the destructive test results using simple regression analysis. The results showed that the mechanical properties (Uniaxial Compressive Strength, Modulus of Elasticity, and Tensile strength) can be predicted from the correlation equations proposed in this study.

Behaviour of Waste Plastic Fiber Concrete Slabs Under Low Velocity Impact

This research investigates the impact resistance of concrete slabs with different volume perecentage replacement ratios of waste plastic fibers (originaly made from soft drink bottles) as follows : 0.5%, 1% and 1.5%. Reference mix produced in order to compare the result. For the selected mixes, cubes with (100×100×100mm) were made to test compressive strength at age of (90) days. Flexural strength (Modulus of Rupture) test was also conducted using prisms sample of (500*100*100 mm) dimensions. The low-velocity impact test was conducted by the method of repeated falling mass where 1400gm steel ball was used. The ball falling freely from height of 2400mm on concrete panels of (500×500×50 mm) having a mesh of waste plastic fiber.The number of blows that caused first crack and final crack (failure) were determined, according to the former obtained results , the total energy was calculated. Results showed an improvement in mechanical properties for mixes containing plastic fibers compared with reference mix. For compressive strength the maximum increase in compressive strength was equal to (3.2%) at age of (90) days. Flexural strengths for mixes containing plastic fiber at ages 28, and 90 days are higher than that of these of reference mix. The maximum value of increaseing was (18%) for 28 days age of test and it was equal to (26%) for 90 days age of test for the mixture with plastic fiber content by volume equal to (1%) . Results showed a significant improvement in low-velocity impact resistance of all mixes contining waste plastic fibers when comparing with reference mix. Results illustrated that mix with (1.5%) waste plastic fibers by volume give the higher impact resistance at failure than the others. The magnitude of an increase over reference mix was equal to (340%).

Engineering Properties of Silty Soil Stabilized with Lime and Rice Husk Ash and Reinforced with Waste Plastic Fiber

Although abundant plastic waste contaminating the environment may be utilized as reinforcing materials, a potential pozzolanic material (rice husk ash blended with lime) possesses superior properties in stabilizing soils. Engineering behavior of the stabilized clayey/silty soil reinforced with randomly distributed discrete plastic waste fibers is investigated in this paper. The results indicate that the proposed method is very effective to improve the engineering properties of the clayey/silt soil in terms of compressive, tensile, and shear strength, which further enhanced the stability and durability of the soil. Based on the compressive strength, California bearing ratio (CBR), shear strength, and failure characteristics, the optimum amount of fiber mixed in soil/lime/rice husk ash mixtures ranges from 0.4–0.8% of the dry mass.

Effect of Specimen Size on the Tensile Strength Behavior of the Plastic Waste Fiber Reinforced Soil – Lime – Rice Husk Ash Mixtures

Improvement of tensile strength in fiber reinforced soil is an important research topic. A study has been undertaken to investigate the strength of stabilized clay-soil reinforced with randomly distributed discrete plastic waste fibers by carrying out split tensile strength test. In this study, the clay soil was stabilized with lime and rice husk ash mixtures. The main purpose of this research is to investigate the effect of specimen size to the tensile strength behavior. Testing procedure was formulated using extended ASTM C496 standard. The laboratory investigation results showed that split-tensile strength of reinforced specimens increased with increase in size. The limitations of the dataset indicate that specimen size of 70 mm in diameter is the threshold to produce reasonable representative strengths.