We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
A New Sustainable PPT Coating Based on Recycled PET to Improve the Durability of Hydraulic Concrete
AI summary Read the abstract
Researchers synthesized a new sustainable polypropylene terephthalate (PPT) coating derived from recycled PET and evaluated its performance in improving the durability of hydraulic concrete exposed to water and aggressive environments. The coating demonstrated enhanced protection against water penetration and chemical attack, offering a circular economy approach to infrastructure protection.
A new sustainable polypropylene terephthalate (PPT) coating was synthesized from recycled polyethylene terephthalate (PET) and applied on hydraulic concrete substrate to improve its durability. First step, PET bottles wastes were grinded and depolymerized by glycolysis using propylene glycol (PG), in a Vessel-type reactor (20–180 °C) to synthesize bis(2-hydroxypropyl)-terephthalate (BHPT), which was applied as coating to one-three layers on hydraulic concrete substrate, by brushing technique and polymerized (150 °C for 15 h) to obtain PPT. PET, BHPT and PPT were characterized by FT-IR, PET and PPT by TGA, and the PPT coatings by SEM (thickness), by ASTM-D3359-17 (adhesion) and by water contact angle (wettability). The durability of hydraulic concrete coated with PPT was studied by resist chloride ion penetration (ASTM-C1202-17), carbonation depth at 28 days (RILEM-CPC-18), and absorption water ratio (ASTM-C1585-20). The results demonstrated that the BHPT and PPT were synthetized (FT-IR), PPT had a similar thermal behaviour to PET (TGA); the PPT coatings had good adhesion to the substrate, with thicknesses of micrometric units; hydrophilic (similar to PET coatings), and the durability of hydraulic concrete coated with PPT (2-3 layers) improved (migration of chloride ions decreased, carbonation depth was negligible, and the absorption water ratio decreased).
More Papers Like This
A New Sustainable PPT Coating Based on Recycled PET to Improve the Durability of Hydraulic Concrete
AI summary Read the abstract
This study characterized the abundance and types of microplastics in atmospheric fallout in a remote location far from major urban centers. Plastic fibers and fragments were detected at significant deposition rates, confirming that atmospheric transport disperses microplastics to pristine environments globally.
Utilization of plastic waste as replacement of natural aggregates in sustainable concrete: effects on mechanical and durability properties
AI summary Read the abstract
Researchers tested concrete made with recycled polyethylene and PET plastic aggregates substituted for natural sand and gravel, finding that while plastic additions reduced compressive strength and increased water permeability, they improved impact resistance and chloride resistance, with PET concrete showing no microplastic leaching.
Innovative Sustainable Concrete: Fresh and Hardened Properties Incorporating Plastic Waste
AI summary Read the abstract
This study investigated the effects of incorporating plastic waste into concrete on mechanical and durability properties, addressing the hydrophobic nature and poor interfacial adhesion of plastic as a challenge within circular economy frameworks for construction material sustainability.
Utilization of Plastic Waste in Concrete Pavement
AI summary Read the abstract
Researchers investigated the use of recycled high-density polyethylene (HDPE) plastic waste as an aggregate in concrete pavement mix designs, finding that incorporation of HDPE improved mechanical performance and durability while reducing landfill waste and energy consumption in the concrete sector.
A Step towards Sustainable Concrete with Substitution of Plastic Waste in Concrete: Overview on Mechanical, Durability and Microstructure Analysis
AI summary Read the abstract
This review evaluates the use of plastic waste as a substitute material in concrete, analyzing its effects on mechanical strength, durability, and microstructure to assess its viability as a sustainable construction approach.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.