The Effect of Incorporating Silica Stone Waste on the Mechanical Properties of Sustainable Concretes (original) (raw)
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Materials
The utilization of solid waste in useful product is becoming a great deal of worth for individuals, organizations, and countries themselves. The powder of waste glass and silica fumes are also considered major waste materials across the globe. In this paper, the physico-chemical, thermal, and morphological properties of both waste powders are investigated in order to determine their suitability for use as a partial replacement for cement in basic concrete. They are suitable for use in concrete due to their pozzolanic and other basic properties. Extensive testing, in terms of the compressive strength test, the slump test, and the flexural strength test, has been carried out to study the replacement of cement in the range of 5–15% by waste glass powder for curing ages of 7 and 28 days. The FTIR analyses of both materials are studied for determining the effect of characteristics of chemical bonding and intense bands with bending vibrations of O–Si–O bonds. Experimental results indicate...
Development of high performance concrete using industrial waste materials and nano-silica
Journal of materials research and technology, 2020
There is a concerted effort worldwide to use environment-friendly binders in the establishment of civil infrastructure. The use of such materials, as a partial or total replacement of Portland cement, leads to technical, economic and environmental benefits. The reported study was conducted to develop high performance concrete (HPC) utilizing two industrial waste materials (IWMs), namely cement kiln dust (CKD) and electric arc furnace dust (EAFD), in conjunction with nano-silica (NS). The mechanical properties, morphology and durability characteristics of the developed HPC were evaluated. The strength of concrete decreased with increasing quantity of both CKD and EAFD that were used as a partial replacement of cement. However, an increase in strength was noted due to the incorporation of NS. The chloride permeability significantly decreased due to the incorporation of 5% NS in CKD and EAFD cement concretes. A dense and uniform microstructure, with a compact interfacial transition zone, was noted in concrete specimens incorporating Portland cement, IWMs and NS. The incorporation of IWMs along with NS results in the following benefits: environmental (decreased greenhouse gas emission and solution of the disposal problem associated with the IWMs), economic (decreased overall cost of concrete) and technical (enhanced service life of structures).
Comparative Study of Silica Powder based Concrete with Normal
2020
1Project Management Trainee, Sunteck Realty, Mumbai, Maharashtra 2Structural Engineer, A plus B Infrastructure Pvt. Ltd, 3Residential Building Consultant, Jodhpur, Rajasthan ---------------------------------------------------------------------***---------------------------------------------------------------------Abstract The silica powder based concrete (SPC) is one innovation which provides strength, durability and other properties to concrete. In this work we tested M50 grade concrete cubes of size 150x150x150 with Nano silica powder and Class C fly-ash and tested their properties for 7, 14 & 28 days respectively. Cement was replaced with varying percentages of Nano silica and the results were tabulated. The results showed that 10% replacement of cement with silica powder gave the maximum strength to the concrete, increased its initial strength and also durability.
MATEC Web of Conferences, 2017
Construction and demolition wastes are increasing significantly due to augmented boom of modern construction. Although the partial cement replacement materials do promote the idea of sustainable construction, the use of construction and demolition waste can also be considered to be viable option to advance the sustainability in modern construction practices. This paper investigates the use of industrial waste materials namely marble dust and crushed bricks as replacement of natural fine aggregates along with the use of silica fume as a partial cement replacement on the mechanical properties and durability characteristics of concrete. Partial replacement levels of waste materials were 10 and 20 percent by volume while the partial replacement level of silica fume was kept to 20 percent at all concrete samples. The results reported in this paper show that the use of marble dust as a replacement material to the natural fine aggregates resulted in an increase in the mechanical properties of concrete. However, the use of crushed bricks did not substantially contribute in the development of strength. Water permeability of concrete incorporated with both silica fume and waste materials (marble dust and crushed bricks) decreased significantly. The decrease in water permeability of concrete was attributed to the pozzolanic reaction of silica fume with calcium hydroxide of cement and the filler effect of the waste materials of marble dust and crushed bricks. The use of waste materials also enhance the freeze and thaw resistance of concrete. Authors strongly suggest that the pozzolanic reaction and the development of the microstructure of the concrete through the use of waste materials are largely responsible from the advances in the durability of concrete.
A Step Towards Green Concrete: Effect of Waste Silica Powder Usage under
16 17 The durability of environment-friendly concrete containing two types of waste material is 18 investigated. Glass powder and microsilica with high silica content were selected to compare their 19 effects on the durability of self-consolidating concrete (SCC) and ordinary concrete with the same 20 packing density in the acidic medium. Experimental results show that microsilica and glass powder do 21 not contribute to concrete corrosion reduction and the most important variable would be 22 superplasticizer content. According to this result, ordinary concretes with lower superplasticizer 23 content show better performance in HCl medium than SCCs. For a quantitative analysis and even to 24
Mechanical properties of sustainable concrete comprising various wastes
Scientific Reports
Due to the rapid increase of pollution around the world, the disposal of waste materials such as granite powder (GP), iron powder (IP), brick powder (BP), and waste plastic particles (PP) is a major environmental problem in the entire world. Utilizing these industrial waste materials has many advantages for the construction industry regarding cost-effectiveness and the sustainability of natural resources. This investigation examined the addition of GP, IP, BP, and PP as a fine aggregate with ratios of 5%, 10%, 15%, and 20% of sand in producing and assessing sustainable concrete. The static properties, i.e., compressive, tensile, flexural strength, and dynamic properties using the drop-weight impact test, were evaluated of such materials. The results showed that using IP as a partial replacement enhances both static and dynamic properties of concrete; the enhancement kept increasing up to 20% of IP, and the compressive, tensile, flexural strength, and impact energy increased by 8.4%,...
Impact of waste materials (glass powder and silica fume) on features of high-strength concrete
De Gruyter, 2023
Pozzolanic materials, glass powder, and silica fume (SF) have all been used in concrete recently as a partial cement substitution to increase the strength of the concrete. The aim of this study is to analyze the impact of waste glass powder (WGP) and SF combination on high-strength concrete (HSC) characteristics. The working methodology of the current research consists of using SF passed through sieve No. 200, and WGP particles that passed through sieve No. 400 (particle size less than 38 µm), maximum size of aggregate (14, 20) mm and W/C + p (0.25, 0.35, and 0.45). The used waste materials were in three different amounts of SF and WGP (5, 10, and 15%) by weight of cement. HSC was tested for compressive strength, density, and ultrasonic pulse velocity (UPV) with various glass powder and SF contents. The obtained results show that after 7 and 28 days, concrete specimens containing 15% glass powder and SF demonstrated an increase in density, UPV, and compressive strength, depending on the test results. Conversely, concrete specimens with 5% SF and WGP had decreased compressive strength, UPV, and density. It was detected that WGP gave high mechanical (compressive strength) and physical properties (density and UPV) than SF with a ratio of 15% and lower properties with a ratio of 5%. In HSC manufacturing, glass powder may be used instead of SF.
Utilization of by-product waste silica in concrete - based materials
Materials Research, 2012
The usage of waste silica from AlF 3 production is limited due to admixtures of fluoride in its composition. The negative effect of admixtures was eliminated by thermally activating this silica gel. After thermal activation the mineralogical composition of silica gel changes. Fluorine is binding in low-reactive compounds, which insignificant effect on the cement hydration process. The possibilities of using waste by-product silica in hardened cement paste were investigated. Silica gel could be used as additive of the hardened cement paste after thermal activation (1 hour at 800 °C temperature). It was discovered that the optimum content of thermally activated technogenic silica gel additive under the conditions explored was up to 10% of the total quantity of the cement. After 28 days of hardening, the strength of hardened cement paste increased 7 MPa when the quantity of the additive was -10% of the total weight when compared to the strength qualities of the samples with no additives used.
IRJET- Comparative Study of Silica Powder based Concrete with Normal
IRJET, 2020
The silica powder based concrete (SPC) is one innovation which provides strength, durability and other properties to concrete. In this work we tested M50 grade concrete cubes of size 150x150x150 with Nano silica powder and Class C fly-ash and tested their properties for 7, 14 & 28 days respectively. Cement was replaced with varying percentages of Nano silica and the results were tabulated. The results showed that 10% replacement of cement with silica powder gave the maximum strength to the concrete, increased its initial strength and also durability.
SSRG - IJCE Journal, 2023
This research article aims to assess the impact of substituting fine aggregates in concrete with Ceramic Waste Powder at different proportions (conventional, 5%, 10%, 15%, and 20%) on the deflection behaviour of reinforced concrete beams. This study aims to identify the optimal replacement percentage that minimizes deflection compared to conventional concrete, consequently enhancing structural performance. This article presents the results of an experimental investigation into the impact of Ceramic Waste Powder (CWP) on concrete's mechanical properties and performance. The study assessed concrete specimens' compressive strength, split tensile strength, and deflection behaviour with varying CWP replacement percentages. The results demonstrated that adding CWP had a negligible impact on concrete's compressive and divided tensile forces. However, the deflection behaviour of the concrete beams with 10% CWP replacement was superior to that of the conventional beams. This indicates that the incorporation of CWP into concrete can enhance structural performance. Ultrasonic Pulse Velocity (UPV) tests demonstrate that incorporating 10% CWP into concrete preserves the structure's integrity, presenting CWP as an environmentally friendly production alternative. The findings show the viability of CWP as an option for sustainable waste management in the construction industry. To achieve a balance between improved deflection behaviour and acceptable strength characteristics in concrete structures, a 10% CWP replacement level is recommended. This research contributes to understanding the advantages and limitations of CWP in concrete, thereby providing valuable insights for future sustainable construction practices.