Characteristics of mortar and concrete containing fine aggregate manufactured from recycled waste polyethylene terephthalate bottles

By Yun-Wang Choi, D. Moon, Yong Jic Kim, M. Lachemi. 2009

350 citations recorded by the source corpus.

Abstract This paper presents the development of lightweight aggregate concrete using fine aggregate that is manufactured from recycled waste polyethylene terephthalate (PET) bottles. Investigations on waste PET lightweight aggregate concrete included three phases: examination of the properties of waste PET lightweight aggregates (WPLA), analysis of the properties of mortar when WPLA was used as fine aggregate, and analysis of the properties of concrete when WPLA was used as fine aggregate. The results of the first phase showed that the WPLA had a density of 1390 kg/m3, a water absorption of 0% and a bulk density of 844 kg/m3. WPLA fineness modulus (F.M.), however, was 4.11, which is higher than the F.M. of river sand. This is because the WPLA was single graded. The results of the second phase showed that for the mortar, in which the WPLA was used as a fine aggregate, the flow value increased, while the compressive strength decreased proportionally to the addition of WPLA with elapsed time. In addition, the amount of water absorption by unit area was higher than for the control mortar (without WPLA) when the WPLA content was either 40% or 60%. For the third phase, the results showed that the slump of the WPLA concrete increased as the WPLA content increased regardless of the water-cement ratio (W/C). In comparison to the control concrete, the 28-day WPLA concrete compressive strength decreased by 5%, 15% and 30%, with an increase of WPLA content of 25%, 50% and 75%, respectively. In addition, for a W/C of 0.49, the structural efficiency (compressive strength/density ratio) of the concrete containing 25% of WPLA was higher than that for the control concrete.

Subfields: Building and Construction, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/fe294cd45f87a4ae51433d65feac8980be9d0f37

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Citations in the corpus

Physical and mechanical behaviour of recycled PET fibre reinforced mortar (2011, background): “Nowadays, the literature report many plastic waste applications on mortar and concrete [3–5], specially the use of recycled PET as mortar and concrete aggregates [6–9] and as mortar and concrete fibre reinforcement [10–13].”
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A comparative study on the feasible use of recycled beverage and CRT funnel glass as fine aggregate in cement mortar (2012, background): “These mix proportions are common for cement mortar applications (Ling and Poon, 2011b; Choi et al., 2009).”
Recycling of poly(ethylene terephthalate) – A review focusing on chemical methods (2016, background): “tended to reduce the weight of such composites, when being used as material for the construction of large buildings [32–64].”
Properties and durability of concrete containing polymeric wastes (tyre rubber and polyethylene terephthalate bottles): An overview (2012, background): “Other authors [78] reported that the ratio flexural-tensile strength/compressive strength of PET waste mixtures is similar to that of current cementitious composites.”
Thermal conductivity, compressive strength and ultrasonic wave velocity of cementitious composite containing waste PET lightweight aggregate (WPLA) (2013, neutral): “In these studies, some physical and mechanical properties of the WPLA specimens are examined [5–12].”
On the mechanical properties of concrete containing waste PET particles (2013, background): “[11,12] studied substitution of sand with PET aggregates which were made of PET particles and stone powder and they reported a decrease in concrete unit weight and an increase in water absorption.”
Engineering Properties of Concrete with Waste Recycled Plastic: A Review (2018, background): “The reduction of compressive strength was also found to be present at different test ages, up to 56 days [26,30].”