Mechanical properties and durability of cement-stabilised macadam incorporating waste foundry sand

2021 ◽  
pp. 1-15
Author(s):  
Yingxia Li ◽  
Shibin Ma ◽  
Guang Chen ◽  
Shuai Wang
Keyword(s):  
Mechanical Properties ◽  
Foundry Sand ◽  
Waste Foundry Sand

scholarly journals Effect of Waste Foundry Sand, Waste Glass, and Glass Fiber on Mechanical Properties of Concrete

2020 ◽  
Vol 9 (7) ◽  
pp. 628-632
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Waste Glass ◽  
Fine Aggregate ◽  
Normal Concrete ◽  
Split Tensile Strength ◽  
Foundry Sand ◽  
Different Types ◽  
Waste Foundry Sand ◽  
Powdered Form

The proposed study present behaviour of concrete with inclusion of waste foundry sand (WFS), waste glass, and glass fiber in different concrete trial mixes. Waste foundry sand (WFS) is basically by-product formed from metal casting industries ferrous or non-ferrous, which due to rapid concrete construction in world used as an alternative of sand. Waste glass can be used in concrete in crushed form as a replacement of aggregate or in powdered form as a replacement of cement, the only problem with waste glass is it is prone to alkali-silica reaction due to different composition of different types of glasses. Glass fiber is added with waste glass and waste foundry sand (WFS) to increase strength. Normal concrete grade M25 (1:1:2) is used for this experimental purpose, different concrete trials were casted which consist of replacement of sand with waste foundry sand in different proportion (0%, 10%, 20%, and 30%). Next trial consists of optimum value of (WFS) with different proportion of waste glass (0%, 10%, and 20%, 30%) as a replacement of fine aggregate. Final trial consists of addition of glass fiber (0%, 0.25%, 0.50%, and 0.75%) in optimum value of second trial. Mechanical properties of concrete compressive strength, split-tensile strength, flexural strength was examined at 7, 14, 28, and 56 days curing period.

scholarly journals Mechanical Properties of Ultra-High Performance Concrete with Partial Utilization of Waste Foundry Sand

Buildings ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 11 ◽  
Author(s):  
Piotr Smarzewski
Keyword(s):  
Mechanical Properties ◽  
Quartz Sand ◽  
High Performance ◽  
High Performance Concrete ◽  
Sem Analysis ◽  
Ultra High Performance Concrete ◽  
Foundry Sand ◽  
Foundry Industry ◽  
Micro Cracks ◽  
Waste Foundry Sand

Waste foundry sand (WFS) is a ferrous and non-ferrous foundry industry by-product, produced in the amount of approximately 700 thousand tons annually in Poland and it is estimated that only a small percentage of this waste is recycled. The study used WFS to produce ultra-high performance concrete (UHPC) as a partial substitute for quartz sand. It was replaced with WFS levels of 0%, 5%, 10%, and 15% by weight of quartz sand content. The UHPC mixtures were produced and tested to determine the compressive strength, flexural strength, splitting tensile strength as well as the modulus of elasticity at 28, 56, and 112 days. Scanning electron microscope (SEM) analysis was done to identify the presence of various compounds and micro-cracks in UHPC with WFS. The results revealed an increase as well as an insignificant decrease in the mechanical properties up to 5% and 10% WFS replacement, respectively. These studies also prove improvement in the microstructure of UHPC up to a 5% WFS level. In all the tested properties in this work, 5% WFS was found to be an apt substitute for quartz sand.

An experimental study on the mechanical properties of concrete replacing sand with quarry dust and waste foundry sand

2020 ◽  
Vol 33 ◽  
pp. 828-832
Author(s):  
A. Kumar ◽  
S. Pratheba ◽  
R. Rajendran ◽  
K. Perumal ◽  
N. Lingeshwaran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Foundry Sand ◽  
Waste Foundry Sand ◽  
Quarry Dust

The Influence of the Waste Foundry Sand on the Microstructure and the Physico-Mechanical Properties of Autoclaved Aerated Concrete

2020 ◽  
Vol 998 ◽  
pp. 293-298
Author(s):  
Jindřich Melichar ◽  
Vit Černý ◽  
Rostislav Drochytka
Keyword(s):  
Mechanical Properties ◽  
Porous Structure ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Foundry Sand ◽  
Autoclaved Aerated Concrete ◽  
Calcium Hydrosilicates ◽  
Waste Foundry Sand ◽  
Aerated Concrete ◽  
Positive Effect

Thanks to its porous structure the autoclaved aerated concrete has excellent thermal insulation properties. The production of this building material is carried out in two main steps. At first calcium hydroxide reacts with aluminum powder. This reaction releases hydrogen which creates the porous structure. Secondly lime reacts with siliceous components under hydrothermal conditions. This reaction forms crystalline calcium hydrosilicates which represent a binder component in the material. Focus of this paper is to study the degree of crystallization of calcium hydrosilicates depending on the quantity and fineness of the admixture of the waste foundry sand. This material was tested in three different values of specific surface. The influence of granularity of the waste foundry sand on the microstructure and physical-mechanical properties of the autoclaved aerated concrete was monitored. At the same time, the influence primary filler substitution by foundry sand was also observed. The substitution was realized in amounts of 10%, 30% and 50%. As the final step the influence of the waste foundry sand admixture on the autoclaved aerated concrete porous structure was evaluated. The microstructure was analyzed by X-ray diffraction. Obtained values show that admixture of waste foundry sand has positive effect on the crystallisation of calcium hydosilicate phases. Substitution of primary filler by waste foundry sand is possible up to 50%. With a higher amount of substitution, the higher values of compressive strength of autoclaved aerated concrete were monitored.

Sign in / Sign up

Export Citation Format

Share Document