Mechanical behavior of high-strength concrete incorporating seashell powder at elevated temperatures

Ahsan, Muhammad; Siddique, M.; Farooq, Hassan; Usman, Muhammad; Aleem, Muhammad Ashar Ul; Hussain, M. Manzoor; Hanif, Asad

doi:10.1016/j.jobe.2022.104226

Cited by 16 publications

(17 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consequently, all such awful characteristics will have a deleterious impact on the wholeness of cement-based composite products and may create pathways for ion migration in the hardened cement matrix. Nevertheless, to achieve a superior quality of mortar or concrete, treated aquaculture seashells serving as a replacement for cement, sand, and granite have been found in recent empirical studies [ 5 , 10 , 11 , 12 , 13 ]. Seashell is a hard, protective outer layer produced by marine organisms.…”

Section: Introductionmentioning

confidence: 99%

“…Seashell is composed mainly of aragonite and calcite with higher densities and strength than limestone powder [ 12 ]. Bamibgoye et al [ 5 ] described seashell as a notable filler in cement-based products with over 90% calcium carbonate comparable with limestone, serving as the main raw meal for limestone Portland cement.…”

Section: Introductionmentioning

confidence: 99%

“…When used as a cement substitute in cement-based products, it forms a structured mesh and smaller pores, which may lead to increased compressive and flexural strengths [ 3 ] and reduced permeability and porosities with over 15% by weight content in a cementitious matrix [ 5 ]. It also provides insulating properties to cement-based products [ 12 ]. Classification of seashells utilised in cement-based products, according to Eziefula et al [ 4 ], are mainly bivalve shells and gastropods of mollusc shellfishes.…”

Section: Introductionmentioning

confidence: 99%

“…Industries, including music, pharmaceutical and medical, art, and ornament, have found the waste useful [ 15 ]. Irrespective of the usage, large quantities are dumped or disposed of in landfills with attendant environmental menaces of offensive odour and a distracting visual environment [ 12 , 15 ]. Long-term storage can result in the biological degradation of salts into gases such as hydrogen sulphide, ammonia, and amines [ 4 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of the Mechanical and Microstructural Properties of Masonry Mortar Made with Seashell Particles

et al. 2023

View full text Add to dashboard Cite

In order to study the mechanical and microstructural properties of masonry mortar, combined particles of cockle and scallop seashell wastes were incorporated and analysed through destructive and non-destructive tests. River sand was replaced with the combined seashell particles (SPs) at seven mixes, viz., 0, 5, 10, 15, 20, 25, and 30% with a 0.5 constant water-to-cement ratio (W/C). A mortar mix design of M4-type of BS EN 1996-1-1 was adopted with a target compressive strength of 5.17 MPa at 28 days. The physical, chemical and mineralogy properties of the SPs were analysed through BS standard sieving, X-ray fluorescence (XRF), scanning electron microscopy (SEM), and X-ray diffraction (XRD) methods. The hardened SP-based mortars were subjected to direct compressive strength, rebound hammer, ultrasonic pulse velocity tests, and nonevaporable degree of hydration analysis. The XRF, SEM, and XRD analysis results of the SPs showed over 86% calcium oxide content, irregular and needle-like particles, and hydroxyapatite/calcium silicates, respectively. The direct compressive strength and the non-destructive test results revealed that up to 30% sand replacement with SP in masonry mortar, an improvement of 45% compressive strength could be attained over the control sample. The nonevaporable water method of the degree of hydration analysis showed that after 28 days, hydration increased considerably for the SP-blended mortars over the control, especially the SPM-30 with 30% sand replacement. Therefore, the study concludes that the investigated SPs in blended masonry mortar could benefit an eco-friendly environment and conservation of natural resources.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of the Mechanical and Microstructural Properties of Masonry Mortar Made with Seashell Particles

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Ahsan et al [8] studied the effect of adding seashell powder (0, 10, 20, and 30%) in cementitious composites to improve their fire resistance. The prepared specimens were exposed to temperatures of 200 • C, 400 • C, 600 • C, and 800 • C. They noticed a decrease in cracks at the higher temperatures compared to the conventional concrete and an improvement of some characteristics such as compressive strength, elastic modulus, and compressive toughness.…”

mentioning

confidence: 99%

Experimental Investigation of the High Temperatures Effects on Self-Compacting Concrete Properties

et al. 2022

View full text Add to dashboard Cite

Self-compacting concrete (SCC), which appeared in the 1980s in Japan, is a concrete that differs from others by its high fluidity. The constituents of SCC can be quite different from those of ordinary concretes. They can differ both in their proportions and in their choice. Given the method of installation of SCCs, particular attention is paid to the study of their physical and mechanical characteristics. In this context, experimental tests were conducted to assess the effect of high temperatures on the behavior of SCC. For this purpose, a SCC and ordinary concrete (OC) were tested at temperatures of 20, 150, 300, 450, and 600 ∘C. Prismatic specimens of dimensions 100 × 100 × 400 mm3, cylindrical specimens of dimensions 160 × 320 mm, and parallelepiped specimens of dimensions 270 × 270 × 40 mm3 were prepared for physical (thermal conductivity) and mechanical (compressive strength, elastic modulus, flexural strength, and ultrasonic pulse velocity) tests. The results showed an increase in the compressive strength for SCC between 150 and 300 ∘C following an additional hydration of the cementitious matrix. The residual flexural strength of the concretes decreases progressively with the increase in temperature. This reduction is about 90% from 450 ∘C to 600 ∘C. The results also showed that the thermal conductivity of concrete decreases as the temperature increases and can reach a value of 1.2 W/mK for the heating temperature of 600 ∘C.

show abstract

Effects of Seashell and Lumashell powders on the elevated temperature compressive strength and durability of shell-based concretes

Bahadori

Hedayat

Ravari

et al. 2023

Innov. Infrastruct. Solut.

View full text Add to dashboard Cite

Mechanical behavior of high-strength concrete incorporating seashell powder at elevated temperatures

Cited by 16 publications

References 40 publications

Investigation of the Mechanical and Microstructural Properties of Masonry Mortar Made with Seashell Particles

Investigation of the Mechanical and Microstructural Properties of Masonry Mortar Made with Seashell Particles

Experimental Investigation of the High Temperatures Effects on Self-Compacting Concrete Properties

Effects of Seashell and Lumashell powders on the elevated temperature compressive strength and durability of shell-based concretes

Contact Info

Product

Resources

About