Journal of Ceramics and Concrete Sciences

An Experimental Study on the Partial Replacement of River Sand with Waste Foundry Sand in Concrete Paver Blocks

Mujjamil Naeem Shaikh — Wed, 24 Jul 2024 00:00:00 +0000

The metal foundries utilize a tremendous amount of sand in the metal casting process and can recycle and use the sand. Foundries can no longer use the same sand after a specific time. The sand is then carried away from the foundries and referred to as Waste Foundry Sand (WFS). Foundry sand output ranges from 6 to 10 million tonnes per year. Some foundry sand is deposited near industrial sites, while others are dumped in landfills. This pollutes the environment and places an additional burden on landfills. Waste Foundry Sand (WFS) is composed primarily of silica sand (96 to 99%) and less than 1% carbon and muck. Waste Foundry Sand is a non-structural component that can be added to concrete for paver blocks to improve their strength and longevity. Therefore, it can be utilized instead of natural aggregates, like fine aggregates, to achieve various concrete qualities. This study examined the impact of using waste foundry sand in place of fine aggregate on the compressive strength of M25-grade paver blocks. The weight of the fine aggregate was used to replace 20% of the waste foundry sand, or 0, 10, 20, 30 and 40% of the total weight of the fine aggregate.

The Partial Replacement of M-Sand With Ceramic Waste Sand

Diksha Nagar, Shivam Chaturvedi — Tue, 13 Aug 2024 00:00:00 +0000

This study explores the feasibility and effects of partially replacing manufactured sand (M-sand) with ceramic waste in varying proportions (10%, 20%, 30%, 40%) within M-30 grade concrete mixes. The construction industry increasingly seeks sustainable alternatives to natural sand, prompting the investigation of ceramic waste, a byproduct of ceramic manufacturing, as a potential substitute—experimental work involved substituting M-sand with ceramic waste at different replacement levels, ranging from 10%-40% substitution. Critical factors like compressive strength, flexural strength, workability, and ultrasonic pulse velocity were measured to assess the performance of the blends. The findings show that ceramic waste can significantly enhance specific properties of concrete and mortar. Optimal replacement levels were identified, showing improvements in mechanical strength while maintaining acceptable workability. The study concludes ceramic waste is a viable alternative to M-sand, contributing to sustainable construction practices by reducing the dependence on natural sand resources and minimizing industrial waste.

Study on Strength and Durability Properties of Concrete by Partial Replacement of Fine Aggregate with Copper Slag and Cement with Eggshell Powder

Shimty Dkhar, Venkata Krishnaiah, Dayakar P. — Wed, 28 Aug 2024 00:00:00 +0000

Concrete is usually anticipated to be more affordable, energy-efficient, and stronger than ever. Furthermore, concrete's primary benefits over other building materials must be preserved. The ability to be manufactured almost everywhere, the capacity to create the shape required by a mold, and the inexpensive cost of manufacturing and componentry. These elements have fueled improvements in concrete performance over the years and will continue to do so. The growing use of alternative material components results from the need to improve concrete performance and concern for the environmental impact of the continuously rising demand for concrete. An experimental examination is carried out to learn more about the characteristics of concrete with copper slag substituted partially for fine particles in the concrete mix design. Eggshell Powder (ESP) will be used as cement in proportions of 10% by weight. Copper Slag (CS) with fine aggregates at 0%, 10%, 20%, 30%, and 40% will be utilized for durability tests on concrete of M30 grade and to determine the compressive strength, split tensile strength and flexural strength. The acquired results will be compared with conventional concrete to determine the changes in the qualities of concrete containing 10% eggshell powder in place of cement and copper slag to substitute certain fine particles. The research findings encourage the development of ecologically friendly building techniques and give the concrete sector insightful information on achieving sustainable infrastructure development.

Marble Dust Used in Concrete to Replace Part of the Cement

Ashwini P. Phule — Fri, 30 Aug 2024 00:00:00 +0000

This study investigates the possibility of using marble dust instead of some cement while making concrete. Marble dust, a byproduct of the marble business, can be used to lessen environmental consequences in the building industry, which is increasingly interested in sustainable techniques. The study examines the impact of replacing cement in concrete with different proportions of marble dust (10%, 20%, and 30%) on the material's durability and mechanical qualities. Up to a specific replacement level, the findings of experiments suggest that adding marble dust improves compressive and tensile strengths. The mechanical attributes start to diminish after this ideal position.

Furthermore, using marble dust helps reduce the amount of cement used, lowering carbon dioxide emissions. According to the study's findings, marble dust is a workable supplemental cementation material supporting sustainability in the building industry while preserving concrete's intended performance. Using marble dust as a partial substitute for cement enhances waste material utilization and can yield economic and environmental benefits by decreasing the need for cement and minimizing waste disposal.

Investigation into the Engineering Characteristics of Concrete Utilizing Recycled Concrete Aggregate

Kiran Tirkey, Akhand Pratap Singh, R. R. L. Birali — Thu, 05 Sep 2024 00:00:00 +0000

In the modern period, sustainability has become necessary in the construction sector. Due to the widespread use of concrete worldwide in new buildings and the demolition of old structures, it is essential to look into substitutes for traditional methods of producing concrete, especially when using Recycled Concrete Aggregates (RCA). This work offers a unique mix proportioning method. It tests the engineering properties of RCA concrete to determine the feasibility of the suggested strategy despite reports that RCA concrete is of worse quality than that made using virgin aggregates.

An array of tests is conducted in this study on two concrete classes, M25 and M40, with three nominal replacement ratios for each grade (0%, 25%, and 50%). The novel mix design for RCA concrete production is explained in this thesis. Six distinct mixes of RCA concrete are subjected to extensive testing to evaluate its engineering properties; the outcomes are systematically compared to natural aggregate concrete. Seventy-two specimens are cast and subjected to a battery of tests, including non-destructive testing, density, slump, splitting tensile strength, compressive strength, and elastic modulus.