scholarly journals Durability Evaluation in Concrete Using Cracked Permeability and Chloride Permeability Tests

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
V. M. Sounthararajan ◽  
A. Sivakumar
Keyword(s):  
Water Permeability ◽  
Concrete Specimen ◽  
Chloride Permeability ◽  
River Sand ◽  
Natural Sand ◽  
Conventional Concrete ◽  
Durability Properties ◽  
Strength And Durability ◽  
Concrete Matrix ◽  
Quarry Dust

The objective of this study is to identify the possibilities of utilizing the quarry dust in concrete to obtain an improved strength and durability properties of concrete. In the present study, the addition of quarry dust as alternative for natural sand has been investigated, and the durability properties of concrete were evaluated systematically by means of cracked water permeability and rapid chloride permeability tests. The permeability of concrete was assessed with initial stress applied to the concrete specimen and later checked for water permeability. Concrete mixes were casted using ordinary river sand and compared with 100% quarry dust substituted concrete. The addition of quarry dust significantly improved the concrete matrix properties in terms of strength and permeability resistance. The addition of fine quarry dust in concrete resulted in improved matrix densification compared to conventional concrete. Matrix densification has been studied qualitatively through petrographical examination using digital optical microscopy.

scholarly journals Sustainable Materials -Quarry Waste and Waste Plastic as Fine Aggregate for Improving Elastic Properties of Concrete

2020 ◽  
Vol 9 (5) ◽  
pp. 1442-1451
Keyword(s):  
Modulus Of Elasticity ◽  
Full Potential ◽  
Fine Aggregate ◽  
River Sand ◽  
Natural Sand ◽  
Conventional Concrete ◽  
Waste Plastic ◽  
Quarry Fines ◽  
Ldpe Composites ◽  
Quarry Dust

The present paper focuses on the effective utilization of byproduct of stone mines and waste plastic causing harm to the environment. It signifies sustainable utilization of quarry dust to their full potential to meet the needs of the present, while at the same time conserving natural resources and finding ways to minimise the environmental impacts associated both with quarry fines production. Mathematical modeling for interpreting modulus of elasticity of concrete mixes using ordinary river sand and compared with 0, 25%,50%,75%, 100% replacement with quarry dust in combination with waste plastic in fabriform is discussed. The addition of fine quarry dust with ldpe as waste plastic in concrete resulted in improved matrix densification compared to conventional concrete as well as . Matrix densification has been studied qualitatively through petro graphical examination using digital optical microscopy. The structure was evaluated using SEM in quarry dust and ldpe composites. It is observed that the modulus of elasticity values found to be maximum for 50% replacement of natural sand by quarry dust and waste plastic. The effects of quarry dust on the elastic modulus property were found to be consistent with conventional natural sand.

scholarly journals Mechanical and Durability Properties of Fibre Reinforced Concrete made with OPC, GGBS and Metakaolin

2019 ◽  
Vol 8 (10) ◽  
pp. 3286-3290
Keyword(s):  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Industrial Wastes ◽  
Test Results ◽  
River Sand ◽  
Manufactured Sand ◽  
Durability Properties ◽  
Strength Tests ◽  
Massive Scale ◽  
Strength And Durability

Concrete is a globally utilized material in the construction field. In the last few decades, Concrete consumption has become multifold and usage has enhanced in massive scale due to the rapid growth of infra sector. Generally, Concrete consists of cement, aggregate, and water; these ingredients become more expensive day by day and additionally hard to please and is increasing widely. During the process of making Ordinary Portland Cement(OPC) produces a large amount of greenhouse gases and the environment being polluted. To minimize the cement utilization and environmental issues is essential to switch the cement by another alternate materials such as pozzolanas. The various number of pozzolanic materials comes from industrial wastes are Groundz Granulatedz Blastz furnacez Slagz (GGBS), xFlyqAsh (FA), zSilicazFume (SF), Metakaolin (MK) etc are utilized in concrete. Similarly, the availability of river sand is getting drained furthermore it turns out troublesome. In order to avoid this problem river sand is alter by zManufacturedkSand (M Sand). An attempt is made in the present investigation to study on properties of fiber reinforced concrete (qsteelu fibers @ 1% of binder) of M40 grade made with OPC, GGBS, MK and manufactured sand. In this study, OPC is replaced by GGBS and MK in different proportions. By casting requisite number of cubes, cylinders then zMechanical properties are determined such as fCompressivekstrength,sSplitdtensile strength tests and durability properties are determined by conducting Water absorption and Sorptivity tests. Test results are compared between controlled concrete and innovative concrete of M40 grade.It is observed that 30%(15%GGBS,15%MK) replacement is optimum for strength and durability criteria.

scholarly journals THE EFFECT OF QUARRY DUST WITH CEMENT BY-PRODUCTS ON PROPERTIES OF CONCRETE

2018 ◽  
Vol 30 (3) ◽  
Author(s):  
Jaharatul Dini Karen Lee Abdullah ◽  
Nazri Ali ◽  
Roslli Noor Mohamed ◽  
Mohammed Mu’azu Abdullahi
Keyword(s):  
Partial Replacement ◽  
Concrete Durability ◽  
River Sand ◽  
Natural Sand ◽  
Green Concrete ◽  
Granulated Blast Furnace Slag ◽  
Mineral Additions ◽  
Carbon Dioxide Co2 ◽  
The Cost ◽  
Quarry Dust

The numerous demanding application of concrete is not readily met with Ordinary Portland Cement (OPC) alone. To meet up the demand and as well as ensured the green concrete durability, it has becomes necessary to incorporate mineral additions with the best combination of others by-product as replacement to improve the performance without jeopardizing the strength of the concrete. In the construction industry, OPC cement and river sand are used as important building material making it scarce and limited. Whereas, as for the cement is well known as the biggest culprits for emitting carbon dioxide (CO2). Hence, partial replacement of cement becomes a necessity as well as natural sand in concrete by waste material or by-product without compromising the quality of the end product. Partial replacement with Ground Granulated Blast furnace Slag (GGBS), Fly Ash (PFA), Silica Fumes (SILICA) incorporates with 100% of Quarry Dust (QD) as sand replacement. The usage of 100% QD with OPC+PFA+SILICA (Mix 2) produced more durable concrete with good temperature control and better furnishing than with 100% river. In addition to the cost effect benefit, the reduction in depletion of river sand, addressing environment and sustainability issues, it is a valuable contribution in creating a green concrete.

scholarly journals Strength Analysis of Concrete Containing Crushed Rock Particles AS Partial and Total Replacement of Sand

2019 ◽  
Vol 8 (4) ◽  
pp. 8092-8099
Keyword(s):  
Environmental Issues ◽  
Tensile Tests ◽  
Crushed Rock ◽  
Experimental Investigations ◽  
Strength Analysis ◽  
River Sand ◽  
Natural Sand ◽  
Conventional Concrete ◽  
Stone Dust ◽  
Compressive Strength Test

In recent past, the demand for natural river sand has rapidly increased for constructional purposes. This high demand led to extraction of sand from river beds. Depletion of natural sand creates the environmental issues and hence sand excavating is restricted by government which resulted in shortage and substantial increase in its cost. In this context, there is a need to recognize reasonable elective material from mechanical waste instead of stream sand. The usage of squashed shake sand which is a waste material has been acknowledged as building material in numerous nations for as long as three decades. In this paper, attempt is being made to replace natural river sand partially and completely with stone dust. The cube compressive strength test and split tensile tests were conducted. Experimental investigations have revealed that the mechanical properties of concrete using stone dust are almost similar to the conventional concrete. Hence the detrimental effects on environment caused due to excessive mining of river sand can be minimized.

scholarly journals Effect of Durability properties on Geopolymer concrete – A Review

2020 ◽  
Vol 184 ◽  
pp. 01092
Author(s):  
M Niveditha ◽  
Srikanth Koniki
Keyword(s):  
Environmental Sustainability ◽  
Elevated Temperatures ◽  
Mineral Admixtures ◽  
Geopolymer Concrete ◽  
Conventional Concrete ◽  
Curing Conditions ◽  
Durability Properties ◽  
Chemical Attack ◽  
Strength And Durability ◽  
Micro Structures

Geopolymer concrete is prepared by reacting silicate as well as aluminate consisting materials with a caustic activator. More often, waste materials such as GGBS, fly ash, slag from metal and iron production are used. Recent investigations adding new materials like Alccofine, which improves the properties of geopolymer concrete even at ambient temperature condition. This research paper presents a details literature survey on the durability properties of geopolymer concrete. Various research literatures are previewed on durability of geopolymer concrete with the addition of different supplementary cementious materials as their necessity is increasing due to insistent constituents. Past studies from the literature reviews suggested that replacement of cement with chemical and mineral admixtures enhanced the properties of strength and durability of concrete. The micro structures, Morphological structures by SEM, lower shrinkage, higher mechanical strengths, superior durability with environmental sustainability are observed. XRD studies shown enhanced polymerisation reaction which is responsible for development of strength. Elevated temperatures and Surface deterioration are controlled in GPC than OPC. Geopolymer concrete provides better resistance for specimens to chemical attack and also water absorption, sorptivity, porosity have good influence to the durability properties in ambient curing conditions compared to conventional concrete.

scholarly journals Mechanical and Durability Properties of Concrete Made with Used Foundry Sand as Fine Aggregate

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
G. Ganesh Prabhu ◽  
Jin Wook Bang ◽  
Byung Jae Lee ◽  
Jung Hwan Hyun ◽  
Yun Yong Kim
Keyword(s):  
Substitution Rate ◽  
International Standards ◽  
Fine Aggregate ◽  
Test Results ◽  
Natural Sand ◽  
Foundry Sand ◽  
Durability Properties ◽  
Concrete Mixtures ◽  
Concrete Production ◽  
Strength And Durability

In recent years, the construction industry has been faced with a decline in the availability of natural sand due to the growth of the industry. On the other hand, the metal casting industries are being forced to find ways to safely dispose of waste foundry sand (FS). With the aim of resolving both of these issues, an investigation was carried out on the reuse of waste FS as an alternative material to natural sand in concrete production, satisfied with relevant international standards. The physical and chemical properties of the FS were addressed. The influence of FS on the behaviour of concrete was evaluated through strength and durability properties. The test results revealed that compared to the concrete mixtures with a substitution rate of 30%, the control mixture had a strength value that was only 6.3% higher, and this enhancement is not particularly high. In a similar manner, the durability properties of the concrete mixtures containing FS up to 30% were relatively close to those of control mixture. From the test results, it is suggested that FS with a substitution rate of up to 30% can be effectively used in concrete production without affecting the strength and durability properties of the concrete.

scholarly journals Improving Durability Properties of Concrete by using Quarry dust and Waste Plastic as Fine Aggregate

2019 ◽  
Vol 8 (6S4) ◽  
pp. 111-115
Keyword(s):  
Optical Microscopy ◽  
Fine Aggregate ◽  
Conventional Concrete ◽  
Waste Plastic ◽  
Know How ◽  
Durability Properties ◽  
Quarry Fines ◽  
Time Allotment ◽  
Ldpe Composites ◽  
Quarry Dust

The degree of this view is to redesign the undertaking capacity of the supportable use of quarry soil, and to discover any gaps in present day-day know-how. The time allotment affordable usage construes the utilization of quarry buildup to their complete capacity to meet the dreams of the overwhelming, on a comparative time as on the vague time keeping up customary resources and finding strategies to restrain the natural impacts related both with quarry fines gathering and use. Solid mixes had been casted the use of standard stream sand and in evaluation with 25%,50%,75%, 100% open entryway with quarry soil in blend with waste plastic in fabriform. . The development of quarry dust near to squander plastic certainly improved the strong structure homes with respect to power and vulnerability block. The development of significant worth quarry dust with ldpe as waste plastic in strong incited impelled system densification in assessment to conventional concrete. System densification has been considered abstractly through petro graphical test using virtual optical microscopy. The shape modified into evaluated using SEM in quarry dust and ldpe composites.

scholarly journals Strength and Durability Properties of Antimony Tailing Coarse Aggregate (ATCA) Concrete

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5606
Author(s):  
Long Li ◽  
Jianqun Wang ◽  
Longwei Zhang ◽  
Renjian Deng ◽  
Saijun Zhou ◽  
...  
Keyword(s):  
Coarse Aggregate ◽  
High Strength ◽  
Mining Area ◽  
Chloride Permeability ◽  
Conventional Concrete ◽  
Industry Standards ◽  
Shrinkage And Creep ◽  
The Difference ◽  
Strength And Durability ◽  
Long Term Behavior

Antimony (Sb) is a trace element applied widely in modern industry. A large number of tailing solid wastes are left and accumulated in the mining area after purifying the precious antimony from the antimony ores, causing serious pollution to the environment. The major aim of this study is to investigate the feasibility of utilizing antimony tailing coarse aggregate (ATCA) as a complete substitute for natural coarse aggregate (NCA) in high-strength concrete. Concrete specimens with 25%, 50%, 75%, and 100% ATCA replacing the NCA in conventional concrete were prepared for evaluating the performance of ATCA concrete. The investigators find that ATCA concrete has good workability, and the mechanical properties and long-term behavior (shrinkage and creep) of ATCA concrete with all replacement levels are superior to those of NCA concrete. The durability indices of ATCA concrete, such as the frost-resistant, chloride permeability, and resistance to carbonation, are better than those of NCA concrete. While the alkali activity and cracking sensitivity behavior of ATCA concrete seem to be decreased, nevertheless, the difference is not significant and can be neglected. The researchers demonstrate that all of the control indices of ATCA concrete meet the requirements of the current industry standards of China. Overall, ATCA can be used in concrete to minimize environmental problems and natural resources depletion.

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