scholarly journals A Research on Sustainable Micro-Concrete

2019 ◽  
Vol 8 (2S3) ◽  
pp. 1137-1139
Keyword(s):  
Fly Ash ◽  
Environmental Pollution ◽  
New Age ◽  
Industrial Wastes ◽  
Construction Sector ◽  
Conventional Concrete ◽  
Foundry Sand ◽  
Marble Dust ◽  
Sustainable Materials

Construction sector which uses cement in its activities causing a release of CO2 into the atmosphere. Currently, all the sectors are viewing seriously in reducing environmental pollution and hazards. In this scenario, the research in industrial wastes such as fly ash, slag, used foundry sand, marble dust, etc., lead to use in construction industries as sustainable materials (SM), thereby contributing to reduction in environmental pollution. This paper reviewed the usage of these SM in the production of micro-concrete is very less when compared with new age conventional concrete, some of the effects of utilization of these SM in micro-concrete are presented. The quantum of research done in micro-concrete is very less, further studies to be done

scholarly journals Use of industrial wastes as filler in open-graded friction courses

2017 ◽  
Vol 12 (2) ◽  
pp. 106-116 ◽  
Author(s):  
Rajan Choudhary ◽  
Dibyatonu Chattopadhyay ◽  
Abhinay Kumar ◽  
Ashok Julaganti
Keyword(s):  
Regression Analysis ◽  
Fly Ash ◽  
Course Design ◽  
Industrial Wastes ◽  
Mix Design ◽  
Design Parameters ◽  
Void Content ◽  
Filler Materials ◽  
Open Graded Friction Course ◽  
Marble Dust

For a fast developing economy like India, expansion, rehabilitation, and maintenance of transportation infrastructure is crucial and require huge quantities of high quality natural aggregates. Meanwhile, vast amounts of industrial wastes accumulating in the country pose problems related to safe and sustainable disposal. The present study investigated possible utilisation of marble dust, a waste from stone industry, and fly ash, a waste from thermal power stations, as filler materials in open-graded friction course mixes. Open-graded friction course mixes incorporating fly ash, marble dust, and two sources of stone dust as filler fractions were designed and evaluated for mix design properties including draindown, abrasion loss, air void content, and permeability. Morphology of each filler was characterised through scanning electron microscopy. Physicochemical properties of fillers were examined through Rigden voids, German filler test, methylene blue, and hydrometer analysis. Analysis of variance using Fisher multiple comparison procedure was performed to evaluate the effect of filler type on design properties of open-graded friction course mixes. Regression analysis using forward selection technique was performed to identify significant filler characteristics influencing open-graded friction course properties. Results showed that filler type affected open-graded friction course design parameters significantly. Open-graded friction course mixes with marble dust showed promising performance with lowest draindown, and highest durability, air voids, and permeability. Regression analysis identified Rigden void content of filler materials as a major filler characteristic affecting the mix design parameters of open-graded friction course mixes.

A critical review on tribological properties, thermal behavior, and different applications of industrial waste reinforcement for composites

2020 ◽  
pp. 146442072097243 ◽  
Author(s):  
Swati Gangwar ◽  
Vimal Kumar Pathak
Keyword(s):  
Fly Ash ◽  
Red Mud ◽  
Industrial Waste ◽  
Hybrid Composites ◽  
Industrial Wastes ◽  
Reinforced Composites ◽  
Manufacturing Costs ◽  
Comprehensive Review ◽  
Marble Dust ◽  
Future Potential

Industrial wastes such as marble dust, fly ash, and red mud have progressed as an environmental hazard that needs to be disposed or utilized for minimizing the ecological pollution problems and manufacturing costs. Over the years, there is an increasing interest among researchers in utilizing these industrial wastes as reinforcement for developing economic and lightweight monolithic or hybrid composites. In the same context, this paper presents a comprehensive review on the aspects of tribology and thermal performance of industrial waste such as marble dust, fly ash, and red mud as reinforcement for different monolithic and hybrid composites. The review also describes different applications for industrial waste material reinforced composites. Finally, the paper concludes with authors’ perspective of the review, conclusion summary, and future potential of industrial waste filled composites in different industries for obtaining a sustainable and cleaner environment.

scholarly journals Sorptivity and Durability Assessment of Dolomite Impregnated Ternary Concrete

2019 ◽  
Vol 8 (2) ◽  
pp. 5676-5681 ◽  
Keyword(s):  
Fly Ash ◽  
Absorption Test ◽  
Testing Methods ◽  
Durability Test ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Dolomite Marble ◽  
Marble Dust ◽  
Durability Assessment ◽  
Sorptivity Test

Traditional testing methods such as absorption test and permeability test are normally not providing accurate results of nature of concrete and there is a need for another type of test to predict the durability of concrete. In this work, industrial by-product like dolomite, marble dust and fly ash are utilized as fraction of cement replacing with 2%, 4%, 6%, 8%, and 10% dolomite, 10% fly ash and 10% marble dust by the weight of cement. The study is conducted on mix designed concrete of M30 grade and compared with conventional concrete. The specimens are casted and tested to examine various properties of concrete like compressive strength, split tensile strength, durability and sorptivity. Durability test is done by hydrochloric acid (HCl) and sulphuric acid (H2SO4 ) on dolomite powder, promising results were obtained in the sorptivity test which shows the dense nature of concrete by the usage of dolomite powder.

scholarly journals Industrial Wastes-Cum-Strength Enhancing Additives Incorporated Lightweight Aggregate Concrete (LWAC) for Energy Efficient Building: A Comprehensive Review

2021 ◽  
Vol 14 (1) ◽  
pp. 331
Author(s):  
Rajesh Kumar ◽  
Abhishek Srivastava ◽  
Rajni Lakhani
Keyword(s):  
Fly Ash ◽  
Industrial Waste ◽  
Building Materials ◽  
Lightweight Aggregate ◽  
Industrial Wastes ◽  
Lightweight Aggregate Concrete ◽  
Future Research ◽  
Construction Sector ◽  
Mineralogical Characterization ◽  
Aggregate Concrete

Lightweight aggregate concrete (LWAC) exhibits the advantages of thermal insulation, reduces energy consumption building costs, improves building efficiency and easy construction. Furthermore, the utilization of industrial wastes in concrete is advantageous in terms of environmental sustainability. In order to explore this, several researchers investigated the idea of integrating industrial wastes in LWAC. However, the lack of knowledge regarding the performance of industrial waste-based lightweight aggregate concrete hinders the adaptation of this concept and application of LWAC in the construction sector. Therefore, this paper summarizes the research in relation to the sustainable LWACs containing oil palm shell (OPS), lightweight expanded clay aggregate (LECA), vermiculite, perlite, pumice and sintered fly ash as lightweight aggregate, along with industrial wastes and strength-enhancing additives (viz. fibers, polymers, etc.). Firstly, desirable physical, chemical, morphological and mineralogical characterization of different lightweight aggregates are presented, and then a comprehensive overview on fresh, hardened, durability and thermal properties of LWAC incorporating industrial wastes are discussed in comparison with normal weight concrete. The review also highlights the current challenges and suggests the research gaps for further development of eco-friendly LWAC. It is concluded that vermiculite, perlite, pumice, OPS, sintered fly ash and LECA with some suitable industrial waste materials have the potential to be used in the construction sector. Moreover, LWAC with industrial waste has 50–65% lower carbon emission (kg CO2 eq/m3) in the environment. The scientific contribution of this paper provides insights into different LWACs and the knowledge base for future research and paradigm shift of using LWACs as more common alternative building materials.

Durability of alumina silicate concrete based on slag/fly ash blends against corrosion

2019 ◽  
Vol 26 (8) ◽  
pp. 1641-1651 ◽  
Author(s):  
Gopalakrishnan Rajagopalan
Keyword(s):  
Fly Ash ◽  
Construction Industry ◽  
Industrial Wastes ◽  
Polymer Concrete ◽  
Geopolymer Concrete ◽  
Ambient Conditions ◽  
Conventional Concrete ◽  
Content Type ◽  
Ambient Curing ◽  
Durability Of Concrete

Purpose The durability of concrete structures, especially built-in corrosive environments, starts to deteriorate after 20–30 years, even though they have been designed for more than 60 years of service life. The durability of concrete depends on its resistance against a corrosive environment. Inorganic Polymer concrete, or geopolymer concrete, has been emerging as a new engineering material with the potential to form an alternative to conventional concrete for the construction industry. The purpose of this paper is to conduct the investigation on corrosion of the geopolymer materials prepared using GGBS blended with low calcium fly ash in different percentages and sodium hydroxide, sodium silicate as activators and cured in ambient conditions (25±5°C). Design/methodology/approach GGBS was replaced by fly ash at different levels from 0 to 50 percent in a constant concentration of 12M. The main parameters of this study are the evaluation of strength characteristics of geopolymer concrete and resistance against corrosion by conducting accelerated corrosion test (Florida method). Findings From the test results it is observed that the strength of the geopolymer concrete with GGBS in ambient curing performs well compared to geopolymer concrete with GGBS blended with fly ash. The GPCE sample (40 percent replacement of fly ash to GGBS) shows better results and the resistance against corrosion was good, compared to all other mixes. Research limitations/implications The outcomes of this investigation will be useful for the researchers and the construction industry. Practical implications This paper results that optimum percentage of fly ash should be blended with GGBS against the corrosion attack. This investigation indicates that GGBS without the combination of fly ash can be utilized in a normal environment. These findings will definitely be useful for the ready-mix concrete manufacturers and the construction Industry. Social implications Disposal of industrial wastes causes pollution to the environment. Industrial wastes are utilized for the production of geopolymer concrete, which is the alternative material for the construction industry. Originality/value From the observation of the previous literature, till now there was no investigation on geopolymer concrete for corrosion under ambient curing conditions, as such this investigation could be considered as the new investigation.

scholarly journals Effect of Foundry Sand and Mineral Admixtures on Mechanical Properties of Concrete

2018 ◽  
Vol 64 (1) ◽  
pp. 117-131 ◽  
Author(s):  
K.V.S.Gopala Krishna Sastry ◽  
A. Ravitheja ◽  
T.Chandra Sekhara Reddy
Keyword(s):  
Fly Ash ◽  
Silica Fume ◽  
Strength Properties ◽  
Sem Analysis ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Maximum Increase ◽  
Conventional Concrete ◽  
Foundry Sand ◽  
Fine Aggregates

Abstract Foundry sand waste can be utilized for the preparation of concrete as a partial replacement of sand. The strength properties of M25 grade concrete are studied with different percentages of replacement of fine aggregates by foundry sand at 0%, 10%, 20%, 30%, 40%, and 50%. The optimum percentage of foundry sand replacement in the concrete corresponding to maximum strength will be identified. Keeping this optimum percentage of foundry sand replacement as a constant, a cement replacement study with mineral admixtures such as silica fume (5%, 7.5%, 10%) and fly ash (10%, 15%, 20%,) is carried out separately. The maximum increase in strength properties as compared to conventional concrete was achieved at 40% foundry sand replacement. Test results indicated that a 40% replacement of foundry sand with silica fume showed better performance than that of fly ash. The maximum increase in strengths was observed in a mix consisting of 40% foundry sand and 10% silica fume. SEM analysis of the concrete specimens also reveals that a mix with 40% foundry sand and 10% silica fume obtained the highest strength properties compared to all other mixes due to the creation of more C-H-S gel formations and fewer pores.

scholarly journals Fabrication and Performance Evaluation of Lightweight Eco-friendly Construction Bricks Made with Fly Ash and Bentonite

2019 ◽  
Vol 8 (6) ◽  
pp. 2090-2096
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Water Absorption ◽  
Substantial Reduction ◽  
Construction Materials ◽  
Absorption Capacity ◽  
Industrial Wastes ◽  
Project Work ◽  
Fine Aggregate ◽  
Foundry Sand

Brick is one of the foremost extensively used construction materials for masonry purpose. Emphasizing the possibility to convey imperative effect against India's present-day lodging and industrial waste concerns are of paramount importance. This could be achieved by fabricating sustainable products using industrial wastes. Alkali-activated products are assumed to be eco-friendly and economical, leading to Portland cement-free products. This project work is an attempt to discover an eco-friendly brick for construction purposes by totally replacing the normal brick components by wastes from many industries. For the investigation purpose, we developed geopolymer bricks by utilizing fly ash as the binder, foundry sand as the fine aggregate, bentonite as an additive for improving its properties and finally the alkaline arrangement (a blend of NaOH and Na2SiO3 ). Fly ash combines with alkalis such as Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3 ) creating an alumino-silicate gel, that shows properties similar to that of cement and it can be used as the environment-friendly binding material. The design mix proportions of the current work are 0.54:0.44:0.04 (fly ash: foundry sand: bentonite), solutions to fly ash ratio is 0.5 and the ratio of Na2SiO3 to NaOH is 1.5. The basic characteristics of bricks such as compressive strength, water absorption capacity, density, soundness, efflorescence, and hardness were tested. It attains a compressive strength value ranging between 6-25Mpa, water absorption value in between 5-12% and also the developed bricks were light in weight. Also, the final conclusions were drawn after comparing the test results with other geopolymer bricks and clay burnt bricks. Geopolymer bricks seem to be incredibly beneficial as they will amalgamate a large quantity of industrial wastes. The utilization of waste raw materials (except for alkaline activator solution) resulted in a substantial reduction in the estimated production cost of the bricks.

Performance of spent garnet sand and used foundry sand as fine aggregate in concrete

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Naga Rajesh Kanta ◽  
Markandeya Raju Ponnada
Keyword(s):  
Partial Replacement ◽  
Fine Aggregate ◽  
Construction Sector ◽  
River Sand ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Foundry Sand ◽  
Content Type ◽  
Structural Applications ◽  
Concrete Production

Purpose In the construction sector, river sand has turned into a costly material due to various reasons. In the current study, used foundry sand (UFS) and spent garnet sand (SGS) are used as a partial and full replacement to sand in concrete production. Design/methodology/approach The objective of the work is to develop non-conventional concrete by replacing river sand with a combination of UFS (constant 20Wt.% replacement) and SGS at various percentages (20, 40, 60 and 80 Wt.%). Findings Compared to conventional concrete, the 28 days compressive strength of non-conventional concrete (with UFS at 20% and spent garnet sand at 20%, 40% and 60% were 8.12%, 6.77% and 0.83% higher, respectively. The 28 days split tensile strength of non-conventional concrete (UFS at 20% and SGS at 20 and 40%) were 32.2% and 51.6% higher, respectively. Research limitations/implications It can be concluded that 60 Wt.% of river sand can be combined replaced with 20 Wt.% UFS and 40 Wt.% SGS to produce good quality concrete whose properties are on par with conventional concrete. Practical implications The results showed that combined SGS and UFS can be used as a partial replacement of river sand in the manufacturing of concrete that is used in all the applications of construction sector such as buildings, bridges, dams, etc. and non-structural applications such as drainpipes, kerbs, etc. Social implications Disposal of industrial by-product wastes such as SGS and UFS affects the environment. A sincere attempt is made to use the same as partial replacement of river sand. Originality/value Based on the literature study, no work is carried out in replacing the river sand combined with SGS and UFS in concrete.

scholarly journals Study of the Physical Behavior of a New Composite Material Based on Fly Ash from the Combustion of Coal in an Ultra-Supercritical Thermal Power Plant

2021 ◽  
Vol 5 (6) ◽  
pp. 151
Author(s):  
Mustapha El Kanzaoui ◽  
Chouaib Ennawaoui ◽  
Saleh Eladaoui ◽  
Abdelowahed Hajjaji ◽  
Abdellah Guenbour ◽  
...  
Keyword(s):  
Composite Material ◽  
Fly Ash ◽  
Power Plant ◽  
High Performance ◽  
Thermal Power ◽  
Recovery Process ◽  
Industrial Wastes ◽  
Raw Material ◽  
Polymerization Reaction ◽  
High Performance Composite

Given the amount of industrial waste produced and collected in the world today, a recycling and recovery process is needed. The study carried out on this subject focuses on the valorization of one of these industrial wastes, namely the fly ash produced by an ultra-supercritical coal power plant. This paper describes the use and recovery of fly ash as a high percentage reinforcement for the development of a new high-performance composite material for use in various fields. The raw material, fly ash, comes from the staged combustion of coal, which occurs in the furnace of an ultra-supercritical boiler of a coal-fired power plant. Mechanical compression, thermal conductivity, and erosion tests are used to study the mechanical, thermal, and erosion behavior of this new composite material. The mineralogical and textural analyses of samples were characterized using Scanning Electron Microscopy (SEM). SEM confirmed the formation of a new composite by a polymerization reaction. The results obtained are very remarkable, with a high Young’s modulus and a criterion of insulation, which approves the presence of a potential to be exploited in the different fields of materials. In conclusion, the composite material presented in this study has great potential for building material and could represent interesting candidates for the smart city.

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