Experimental study of concrete prepared by different waste products

Sharma, Nitish

doi:10.1016/j.matpr.2020.12.1150

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…Many experimental studies have proposed the use of waste materials in cement manufacturing [17], especially seashell waste accumulating on coastal areas in seashellconcrete as cement replacement in bricks production [18]. The seashell waste improves the mechanical and physical properties of concrete thanks to its high calcium content [19].…”

Section: Biocomposite Materials: Fiber Based To Platelet Basedmentioning

confidence: 99%

Biowelding 3D-Printed Biodigital Brick of Seashell-Based Biocomposite by Pleurotus ostreatus Mycelium

Abdallah,

Estévez

2023

Biomimetics

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Mycelium biocomposites are eco-friendly, cheap, easy to produce, and have competitive mechanical properties. However, their integration in the built environment as durable and long-lasting materials is not solved yet. Similarly, biocomposites from recycled food waste such as seashells have been gaining increasing interest recently, thanks to their sustainable impact and richness in calcium carbonate and chitin. The current study tests the mycelium binding effect to bioweld a seashell biocomposite 3D-printed brick. The novelty of this study is the combination of mycelium and a non-agro–based substrate, which is seashells. As well as testing the binding capacity of mycelium in welding the lattice curvilinear form of the V3 linear Brick model (V3-LBM). Thus, the V3-LBM is 3D printed in three separate profiles, each composed of five layers of 1 mm/layer thickness, using seashell biocomposite by paste extrusion and testing it for biowelding with Pleurotus ostreatus mycelium to offer a sustainable, ecofriendly, biomineralized brick. The biowelding process investigated the penetration and binding capacity of the mycelium between every two 3D-printed profiles. A cellulose-based culture medium was used to catalyse the mycelium growth. The mycelium biowelding capacity was investigated by SEM microscopy and EDX chemical analysis of three samples from the side corner (S), middle (M), and lateral (L) zones of the biowelded brick. The results revealed that the best biowelding effect was recorded at the corner and lateral zones of the brick. The SEM images exhibited the penetration and the bridging effect achieved by the dense mycelium. The EDX revealed the high concentrations of carbon, oxygen, and calcium at all the analyzed points on the SEM images from all three samples. An inverted relationship between carbon and oxygen as well as sodium and potassium concentrations were also detected, implying the active metabolic interaction between the fungal hyphae and the seashell-based biocomposite. Finally, the results of the SEM-EDX analysis were applied to design favorable tessellation and staking methods for the V3-LBM from the seashell–mycelium composite to deliver enhanced biowelding effect along the Z axis and the XY axis with <1 mm tessellation and staking tolerance.

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Section: Biocomposite Materials: Fiber Based To Platelet Basedmentioning

confidence: 99%

Biowelding 3D-Printed Biodigital Brick of Seashell-Based Biocomposite by Pleurotus ostreatus Mycelium

Abdallah,

Estévez

2023

Biomimetics

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“…Concrete is a mixture consisting of sand, gravel, crushed stone, or other aggregate mixed with a paste made of cement and water to form a rock-like mass [1]. Concrete, the prime constituent in solid, requests huge creation, prompting the emanation of carbon dioxide and consequently a worldwide temperature alteration [2,3]. Sometimes one or more additives are added to produce concrete with certain characteristics, such as workability, durability, and hardening time [4].…”

Section: Introductionmentioning

confidence: 99%

Influence of Seawater on Strength of Concrete Beams Strengthened With Glass Fiber Reinforced Polymer Sheet

Pratama Akhmad

2024

GEOMATE

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Concrete structures close to seawater cannot be avoided in the construction of current facilities and infrastructure. Concrete submerged in seawater will reduce its strength and increase the corrosion rate of reinforcing steel. With Glass Fiber Reinforced Polymer Sheet (GFRP-S) technology, it is possible to increase the strength of concrete and protect reinforcing steel from the effects of seawater corrosion. Several laboratory studies were carried out on GFRP-S coating as an addition and protection against seawater environmental conditions. However, this research is limited by time and equipment, so it is necessary to carry out a finite element analysis. This modeling uses Abaqus CAE 2017 software. The Abaqus modeling results are then validated with laboratory research to find out what percentage of deviations occur. After optimization, several variables were added to determine the load capacity under different conditions. Some additional research variables are the length of immersion of 12, 24, and 48 months. Apart from the period of time, additional variations were made with the thickness of GFRP-S, which was originally only 1.3 mm, increased to 1.5 mm and 1.8 mm. The results obtained were that the immersion time of 12 months decreased the load capacity by 11.21%, the decrease in the immersion time of 24 months was 14.34%, and the decrease in the immersion time of 48 months was 17.63%. The addition of GFRP-S with a thickness of 2 mm increases capacity by 0.89% and the addition of 5 mm GFRP-S increases capacity by 3.74%. This very significant reduction resulted in the beam being recommended for additional repairs or strengthening.

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Experimental study of concrete prepared by different waste products

Cited by 2 publications

References 10 publications

Biowelding 3D-Printed Biodigital Brick of Seashell-Based Biocomposite by Pleurotus ostreatus Mycelium

Biowelding 3D-Printed Biodigital Brick of Seashell-Based Biocomposite by Pleurotus ostreatus Mycelium

Influence of Seawater on Strength of Concrete Beams Strengthened With Glass Fiber Reinforced Polymer Sheet

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