Mechanical Properties of Concrete Contain Waste Fibers of Plastic Straps

Abstract

This study examined the utilization of polyethylene terephthalate (PET) strap waste as fibers to reinforce the concrete. The fibers were obtained by simply cutting the strap. An investigation was carried out on 7 batches containing PET waste fibers as a volumetric fraction of concrete. The parameters were the fibers fraction ratio ranging from (0-0.5) % and aspect ratio (2.5 and 3). Compressive strength, slump test, and splitting tensile strength were the test supplied to concrete. The test results indicate that the PET fibers improve the splitting tensile strength and slightly decrease the compressive strength and workability. So that, the concrete produced can be used in paving, industrial flooring, precast concrete, and shotcrete. Furthermore, a way to reuse plastic waste will be utilized to contribute to saving the environment.

A Step towards Sustainable Concrete with Substitution of Plastic Waste in Concrete: Overview on Mechanical, Durability and Microstructure Analysis

“…Plastic Waste Slump (mm) [24] 0%, 10%, 15% and 20% 30, 100, 120 and 160 [39] Aspect ratio = 2.5 0%, 0.10%, 0.25% and 0.50% Aspect ratio = 2.5 0%, 0.10%, 0.25% and 0.50% 120, 100, 80 and 60 120, 100, 70 and 55 [40] Plastic fibers (0.25 mm) 0%, 0.40%, 0.75% and 1.25% Plastic fibers (0.40 mm) 0%, 0.40%, 0.75% and 1.25% 65, 33, 18 and 13 65, 36, 22 and 17 [41] 0%, 2%, 4%, 6%, 8% and 10% 132, 126, 102, 80, 52 and 14 [23] Plastic fibers powder content (%) 0%, 10%, 20%, 30% and 40% 70, 80, 90, 105 and 120…”

“…The introduction of plastic components may have lowered bonding strength [48]. [39] Aspect ratio = 2.5 0%, 0.10%, 0.25% and 0.50% Aspect ratio = 2.5 0%, 0.10%, 0.25% and 0.50% 16, 15, 14 and 13 16, 14, 13 and 12 [40] Plastic fibers (0.25 mm) 0%, 0.40%, 0.75% and 1.25% Plastic fibers (0.40 mm) 0%, 0.40%, 0.75% and 1.25% A study [56] looked at the usage of plastic aggregates in the preparation of mortars. Substitution ratios of 5, 10 and 15% were examined, but only with sand measuring 1-2 mm in size.…”

“…The strength tests revealed that using HDPE fibers in a volume of 0.6 percent could boost concrete's CMS, STS, FLS and impact strengths by up to 15 percent, 23 percent, 22 percent, and 200 percent, respectively, with only minor gains when increasing the fiber volumes to 0.8 percent and 1.0 percent [61]. The findings showed that adding PET fibers to mortars enhanced FLS while also increasing mortar toughness [39]. Various researchers have claimed that fibers improved the FLS of concrete due to crack prevention [62][63][64][65][66].As little as 0.75-1.25 percent of additional HDPE fibers (by volume) may keep concrete's post-cracking tensile capability at 30-40 percent of its peak FLS capacity [40].…”

A Comprehensive Review on the Utilization of Recycled Waste Fibers in Cement-Based Composites

“…In general, the addition of WRPF resulted in the decreased CS of CBCs [32,41,42,71,113]. The loss of CS was documented in several studies carried out to investigate the MPs of CBCs comprising PET waste fibers of varying content and length [69,[114][115][116]. When 1% PET waste fiber was incorporated into cement mortars, no CS enhancement was observed, while 1.5% PET waste fiber content reduced the CS [117].…”

“…Further investigation revealed that adding 0.5% and 1.0% of type C WRPF to concrete increased its STS by nearly 21% and 33%, respectively. The STS enhancement of fiber types A and B was addressed sequentially in comparison to fiber type C [19,114]. Enhancements in the STS of 15.5% and 24.9% were noticed with the addition of 1.0% of PET fibers with varying aspect ratios of 35 and 50, respectively [119].…”