Early-age strength and failure characteristics of 3D printable polymer concrete

Najvani, Mohammad Amin Dehghani; Murcia, Daniel Heras; Soliman, Eslam; Taha, Mahmoud Reda

doi:10.1016/j.conbuildmat.2023.132119

Cited by 11 publications

(6 citation statements)

References 31 publications

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“…In that regard, a rise in the aging temperatures led to an increase in the aging process of the polymer. As an illustration, polymer concretes, whose binders are made of polymeric materials instead of cement, are one such area where 3D polymers are used in real life [ 84 ]. House et al [ 85 ] note that although 3D printing is linked to the development of asthmatic conditions, it is one of the novel technologies that generate three-dimensional images from digital files by depositing and integrating plastic materials with others like metals and ceramics through additive manufacturing.…”

Section: Resultsmentioning

confidence: 99%

“…House et al [ 85 ] note that although 3D printing is linked to the development of asthmatic conditions, it is one of the novel technologies that generate three-dimensional images from digital files by depositing and integrating plastic materials with others like metals and ceramics through additive manufacturing. Polymer concretes have been used continuously across different areas of applications, including making precast architectural facades, wastewater pipes, manholes, and bridge deck overlays, among others [ 84 ]. In comparison to traditional Portland cement concrete, polymer concretes have elevated tensile strengths, better bond strengths, and enhanced durability [ 85 ].…”

Section: Resultsmentioning

confidence: 99%

“… Customizing mouthguards with thinner walls through additive processing techniques can hinder injurious outcomes [ 83 ] Ferreira et al Ageing effect on the low-velocity impact response of 3D printed continuous fiber reinforced composites An experimental study using low-velocity impact tests across varying numbers of days was conducted The initial elastic part of 3D-printed continuous fiber-reinforced composites slightly reduces as the polymer ages. The severity of visual damage to the polymer specimens varied with age [ 84 ] Najvani et al Early-age strength and failure characteristics of 3D printable polymer concrete. The study was based on a rheology analysis The rheological data could be integrated into the Herschel–Bulkley model.…”

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confidence: 99%

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The Aging of Polymers under Electromagnetic Radiation

Maraveas,

Kyrtopoulos,

Arvanitis

et al. 2024

Polymers

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Polymeric materials degrade as they react with environmental conditions such as temperature, light, and humidity. Electromagnetic radiation from the Sun’s ultraviolet rays weakens the mechanical properties of polymers, causing them to degrade. This study examined the phenomenon of polymer aging due to exposure to ultraviolet radiation. The study examined three specific objectives, including the key theories explaining ultraviolet (UV) radiation’s impact on polymer decomposition, the underlying testing procedures for determining the aging properties of polymeric materials, and appraising the current technical methods for enhancing the UV resistance of polymers. The study utilized a literature review methodology to understand the aging effect of electromagnetic radiation on polymers. Thus, the study concluded that using additives and UV absorbers on polymers and polymer composites can elongate the lifespan of polymers by shielding them from the aging effects of UV radiation. The findings from the study suggest that thermal conditions contribute to polymer degradation by breaking down their physical and chemical bonds. Thermal oxidative environments accelerate aging due to the presence of UV radiation and temperatures that foster a quicker degradation of plastics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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The Aging of Polymers under Electromagnetic Radiation

Maraveas,

Kyrtopoulos,

Arvanitis

et al. 2024

Polymers

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“…SAE exhibited good water retention. 23,24 Concurrently, the internal water content of the mortar gradually reduced, and the water retained by the polymer was absorbed by the cement particles for hydration. The polymer film formed after the water loss was coated on the surface of the hydration products and filled the pores of the mortar.…”

Section: Effects Of the Sae Content On Bond Strengthmentioning

confidence: 99%

Effects of styrene–acrylic emulsion on bond performance and interface microstructure of repair mortar of ternary cementitious system

Shi,

Bu,

2024

J of Applied Polymer Sci

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This study investigates the effects of styrene–acrylic emulsion (SAE) as a modifier and interfacial agent on the interfacial bond performance of ordinary Portland cement–aluminate cement–gypsum (PAG) repair mortar. The hydration products and interfacial microstructure are analyzed via x‐ray diffraction (XRD), x‐ray photoelectron spectroscopy (XPS), Fourier‐transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The results demonstrate that the addition of SAE can effectively enhance the tensile bond strength and flexural bond strength of the PAG repair mortar, and the optimal addition amount of SAE is 10 wt%. The tensile and flexural bond strengths of the PAG repair mortar with SAE interfacial agent at 40% concentration are 1.38 and 1.34 times than those of the mortar without the interfacial agent, respectively. XPS and FTIR analyses reveal that the carboxyl groups in SAE and Ca2+ generated from cement hydration form Ca2+–carboxyl complexes. The SEM and XRD analyses indicate that SAE can alter the distribution and size of crystals at the bond interface and considerably reduce the thickness of the bond interface; however, SAE cannot change the type of hydration products at the bond interface.

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“…Additionally, labor shortages and construction-related risks have further driven the search for advanced solutions [3]. Lately, additive manufacturing, also known as 3D printing, has shown promise in addressing these concerns [6][7][8][9]. This technology was introduced as early as 1997 [10], with most research focused on 3D printing using concrete for construction purposes [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Printability and Rheological and Mechanical Properties of 3D-Printed Earthen Mixes for Carbon-Neutral Buildings

Bhusal,

Sedghi,

Hojati

2023

Sustainability

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This research delves into the vital aspect of adapting local soil properties for 3D printing and explores the mix design of collected earthen materials to tackle challenges in printability, shrinkage, and mechanical properties. Initially, soil samples from six local sites underwent characterization based on Atterberg’s limits, focusing on identifying the most suitable high-clay-content soil. The soil with a higher clay content was used for further study, and its clay type was determined using an X-ray diffraction (XRD) analysis, revealing the presence of 49% kaolinite, 15% nontronite, and 36% illite clay minerals. Four earthen mixes were designed by including stabilizers (i.e., hydrated lime), natural pozzolana, and degradable natural fibers (wheat straw fiber). Subsequently, the study examined their rheological properties, shrinkage behavior, compressive and flexural strength, and printability (including extrudability and buildability). The pure soil mixture excelled in printing quality and mechanical strength, but suffered from cracking and drying shrinkage due to its high nontronite clay content. The existence of 15% nontronite clay mineral in the soil resulted in significant shrinkage and extensive cracking of specimens. However, fiber incorporation effectively mitigated large cracks and reduced shrinkage to as low as 2.6%. Despite initial expectations, introducing lime and pozzolana as soil stabilizers did not improve strength, prevent shrinkage, or improve the printability of soil mixes.

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Early-age strength and failure characteristics of 3D printable polymer concrete

Cited by 11 publications

References 31 publications

The Aging of Polymers under Electromagnetic Radiation

The Aging of Polymers under Electromagnetic Radiation

Effects of styrene–acrylic emulsion on bond performance and interface microstructure of repair mortar of ternary cementitious system

Evaluating the Printability and Rheological and Mechanical Properties of 3D-Printed Earthen Mixes for Carbon-Neutral Buildings

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