Guney et al., 2010 highlighted the potential re-use of waste foundry sand in high-strength concrete production with WFS (0%, 5%, 10%, and 15%). The findings from test program had shown a reduction...
produce a lot of industrial waste such as used foundry sand. This can be used in the production of concrete for specific purposes. It has been well established that foundry sand aggregate can be used for all structural elements in civil engineering. Based on review of literature,it is clear
In order to bring a solution to the problem of waste foundry sand (WFS) in the foundry sector and achieve its reuse, geopolymer building material (as a cementless technology) was produced from the WFS for the first time in the literature in this study. The physical and mechanical characteristics of this material were determined. In the first part of the experimental step, the sieve analysis
Lastly, from the results obtained, the optimum replacement of chemically bonded WFS as fine aggregate is between 10% and 20%. From the present and previous research findings, the reuse of waste foundry sand as fine aggregate for high strength concrete such as making of concrete paver blocks is recommended.
concrete without used foundry sand. But concrete containing25% and 35% clean/new foundry sand gave almost the same compressive strength as that of the control mix. 2.2 Reddi et al. (1995): He reported that compressive strength of stabilized foundry sands decreases as the replacement proportion of foundry sand increases in the mixes and the
The results show that the incorporation of waste foundry sand in concrete causes a systematic decreases in workability and strength and an increase in water absorption.
look for alternatives of constituent materials of concrete. Waste foundry sand (WFS), a by-product of ferrous and non ferrous metal casting industries is one such promising material which can be used as an alternative to natural sand in concrete. Foundries successfully recycle and reuse the sand many times in a foundry.
If waste material like foundry sand is used as construction material, it can help to reduce the amount of disposal material. Foundry sand consists primarily of silica sand, coated with a thin film of burnt carbon, residual binder (sea coal, resins) and dust. It can be used as a partial replacement of fine aggregate.
Various properties of concrete incorporating foundry sand and Ceramic waste at various replacement levels with fine aggregate and coarse aggregate were studied, results were compared and checked for compressive strength, split tensile strength and modulus of elasticity of foundry sand mix with ordinary mix. 4.1 Compressive Strength
[4] Rafat Siddique, Geert de Schutter, Albert Noumowe, “Effect of used foundry sand on the mechanical properties of concrete”, Construction and building materials, 2009, Pg. No. 976 to 980. [5] Her-Yung Wang, “A study of the effects of LCD glass sand on the properties of concrete” Waste Management, 2009, Pg. No. 335 to 341
Therefore, it is necessary to start recycling and re-use of demolition concrete waste to save environment, cost and energy. Central Pollution Control Board has estimated current quantum of solid waste generation in India to the tune of 48 million tons per annum out of which, waste from construction industry only accounts for more than 25%.
Dec 01, 2013· Chloride content ranged from 0.004% to 0.027% of water-soluble RCA. For comparative reasons, test samples were taken from concrete demolition waste of two marine structures in which a high level of chloride content was found (0.07–0.244%). Concerns about chlorides could appear when the original concrete waste comes from marine structures.
recycled concrete dust, and others are being researched from past two decades, in view of conserving the ecological balance. In this direction, an experimental investigation of strength and durability was undertaken to use “Spent Fire Bricks” (SFB) (i.e. waste material from foundry bed and walls; and lining of chimney which is adopted in many
2.3 Value added Utilization of Waste Glass in Concrete From the chief scientist Ahmad Shayan research, using waste glass powder in concrete also gives a good result and has a high potential to increase the concrete strength with reducing the usage of 100% Portland cement.
Concrete has three major categories f or recycling: pure concrete, low polluted concrete, and toxic waste. The barriers for recycling the concrete include the following: For contaminated
Sakrete High-Strength Concrete Mix is a preblended mixture of sand, coarse aggregate, and cementitious materials. The use of this quality mixture, ensuring
Homemade Refractories. This page will detail some of the refractory formulas that I experiment with.My previous furnaces were all made from a clay form surrounded with regular concrete or mortar. The "2 bucks" furnace was my first use of an actual refractory formula. --Jan./16/2002
strength decreases. • Use of fly ash in concrete can save the coal & thermal industry disposal costs and produce a ‘greener’ concrete for construction. • The cost analysis indicates that percent cement reduction decreases cost of concrete, but at the same time strength also decreases.
This design guide serves to extend the use of concrete beyond Grade 60 in the design of concrete structures using CP65. Hence, it is intended for use by engineers familiar with the design of concrete structures using particularly CP65 but who have little or no experience of high strength concrete (HSC). The guide is intended to provide safe
Foundry sand is high-quality uniform silica sand that is used to make molds and cores for ferrous and nonferrous metal castings. The metal casting industry annually uses an estimated 100 million tons of foundry sand for production. Over time, foundry sands physically degrade until they are no longer suitable for molds. Consequently, 9
Concrete installation is not nearly as straightforward as it seems. There is a wealth of preparation that occurs before a single drop of concrete is ever poured onto the site. Everything from the mix design, quantity of concrete to purchase, site preparation, tools, weather forecast, placement process, form removal and curing process need to be Continue reading "Top 16 Mistakes People Make
The lowest value of dry density, compressive strength and splitting strength was 2240 kg/m3, 18.7 MPa and 1.68 MPa, respectively, for 15% replacement of sand by the LDPE waste in concrete specimens.
Aug 19, 2016· The general rule is that the more cement you have the stronger your concrete, but too much cement also brings with it too much heat generated from hydration which will cause cracks and also retard the reaction. The less water you have too the more...