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 Investigative Study of Partial Replacement of Cement with Bio-Cement, Fly Ash and Natural Pozzolans

2021 ◽  
Vol 12 (1S) ◽  
pp. 432-436
Author(s):  
Dr.Sarvesh, Et. al.
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Main Property ◽  
Partial Replacement ◽  
Self Healing ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Quality Properties ◽  
Natural Pozzolans ◽  
The Impact

Concrete is usually a combination of cement, coarse particles (aggregates and Sand) and water. It is used to design and improve the infrastructures.It is used to design and improve the infrastructures. Concrete has many advantages and disadvantage. The main property that is characteristic to a concrete’s workability is its compressive strength. Only through this single test, one can judge if cementing has been done appropriately. Possible advancements for development include the use of non-traditional and creative materials, and the reuse of waste materials with a specific end goal to replenish the absence of specific assets and to discover alternative ways to monitor the Earth..This investigation concentrate on Compressive strength, flexural and split tensile strength of Conventional Concrete (CC) and Class C fly ash remains with bio-cement and natural pozzolans to consider the impact of bio-concrete with blend extents of 0%,0.25%,0.5%,1% and 1.5% on quality properties. Moreover, effective self-healing usually occurred due to the use of polymers, microorganism and additional cementing material. It is the key issue to find out the self-healing efficiency’s effect to sealing the crack width successfully. And good resistance was observed during the bacterial chemical process against the freeze and thaw attacks.

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 Influence of GGBS and Marble Dust on Mechanical Properties of Concrete

2020 ◽  
Vol 9 (7) ◽  
pp. 1037-1039
Keyword(s):  
Mechanical Properties ◽  
Research Work ◽  
Literature Survey ◽  
High Tech ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Granulated Blast Furnace Slag ◽  
Marble Dust ◽  
Furnace Slag

Concrete is a extensively used material in construction. Due to high tech upgrading, the concrete have been matured to augment the equity of concrete. Now a day’s various studies have been conducted to make concrete with waste materials with the intension of reducing cost and demand of materials. This paper investigates the mechanical goods of concrete using Ground Granulated Blast furnace Slag (GGBS) and Marble Dust (MD) as a limited replacement of cement and fine aggregate respectively. Based on previous literature survey, 40% of GGBS and 10, 20 and 30% of MD are taken for the present study. The present research work is aimed at studying the mechanical properties of M20 grade concrete using GGBS and MD. Compressive strength and Split tensile strength were carried out for 7, 28 and 56 days and insignificant increases in the strength were observed for concrete specimens admixed with GGBS and MD when compared with conventional concrete

scholarly journals Optimization of Partial Replacement of Fly Ash with Cement and Fine Aggregate with Eco Sand in Normal Concrete

2019 ◽  
Vol 8 (12) ◽  
pp. 1002-1008
Keyword(s):  
Fly Ash ◽  
Manufacturing Industry ◽  
Good Alternative ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
River Sand ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Wet Process ◽  
Hardened Properties

Eco sand is a very fine particle, which is a by-product from the cement manufacturing industry by semi-wet process and it can be a good alternative for natural river sand. Due to its very finely powdered crystalline silica particles present in that which can replace up to 50% of conventional sand usage in concrete and mortars. It can be used in the concrete by replacement of fine aggregates by a certain percentage which gives much more efficiency. In this paper, the hardened properties like cube compressive strength, cylinder split tensile strength, and prism flexural strength are studied with various replacements cement with fly ash like 0 % and 30% and sand with eco sand-like 0%,30%,40%,50% and 60%. The results are compared with conventional concrete specimens. Experimental results also show that the hardened properties of concrete are increased by a certain amount when compared with the normal placed concrete specimens. During the study Due to replacement of fine aggregate with eco sand for workability conditions by some amount of chemical admixtures have been added

scholarly journals Partial Replacement of Cement with Wood Ash & Fly Ash in Pavement Quality Concrete

2020 ◽  
Vol 9 (5) ◽  
pp. 1513-1515
Keyword(s):  
Fly Ash ◽  
High Strength ◽  
Wood Ash ◽  
Partial Replacement ◽  
Test Results ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Cement Production ◽  
Rigid Pavements ◽  
Emission Of Greenhouse Gases

Pavement Quality Concrete (PQC) is a special type of concrete which is used for construction of rigid pavements in dense traffic regions. In this type of PQC higher percentage of cement content is added when compared with conventional concrete, and it is mostly designed for high strength concrete M40 to M50 grade of concrete. Cement production leads to emission of greenhouse gases in vast amount, which made researchers to look for an substitute material to incorpotate with cement. The current experimental work is done to study the effect of wood ash and fly-ash mixed in concete as a partial replacement of cement. The replacement levels of wood ash and fly ash are taken equally as 10, 20 and 30% by weight of cement. In this mainly focused on Compressive strength and split tensile strength according to IS Codal provisions. Experimental test results revealed that the replacement of wood-ash and fly ash as a cementitious material in Pavement Quality Concrete will improve compressive and splittensile strength of concrete.

scholarly journals Effect of Electrically Precipitated Fly Ash(EPFA) On Fresh and Hardened Properties of High Strength Self- Compacting Concrete

2021 ◽  
Author(s):  
Sambangi Arunchaitanya ◽  
E. Arunakanthi
Keyword(s):  
Fly Ash ◽  
Heterogeneous Material ◽  
High Strength ◽  
Partial Replacement ◽  
Self Compacting Concrete ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Filling Ability ◽  
Chemical Admixture ◽  
Passing Ability

Abstract Concrete is the most common heterogeneous material in the construction industry. Admixtures have gained wide use in modern constructions, which are having congested reinforcement with ambitious casting conditions. For such applications, self-compacting concrete (SCC) is the only special concrete, which can have high cohesiveness and fluidity. This paper shows the study on the fresh properties, compressive, flexural and split tensile strength in addition to RCPT, sorptivity of SCC with partially replaced electrically precipitated fly ash (EPFA) from 0 to 30% at 5% interval in cement and polycarboxylate ether-based superplasticizer as a chemical admixture. Compared the results with conventional SCC mix the fresh concrete performance was studied through the measurement of passing ability, filling ability and flowing ability by using L-Box, U-Box, V-Funnel and slump flow. The results showed that 20% EPFA as partial replacement to SCC gives better results than the conventional concrete, thereby leading to economical profits as well as ecological benefits.

scholarly journals Behavior of Quarry Rock Dust, Fly Ash and Slag Based Geopolymer Concrete Columns Reinforced with Steel Fibers under Eccentric Loading

2021 ◽  
Vol 11 (15) ◽  
pp. 6740
Author(s):  
Rana Muhammad Waqas ◽  
Faheem Butt
Keyword(s):  
Fly Ash ◽  
Concrete Cover ◽  
Steel Fibers ◽  
Structural Behavior ◽  
Partial Replacement ◽  
Geopolymer Concrete ◽  
Fiber Reinforced ◽  
Conventional Concrete ◽  
Source Materials ◽  
Rock Dust

Geopolymer concrete, also known as an earth-friendly concrete, has been under continuous study due to its environmental benefits and a sustainable alternative to conventional concrete construction. The supplies of many source materials, such as fly ash (FA) or slag (SG), to produce geopolymer concrete (GPC) may be limited; however, quarry rock dust (QRD) wastes (limestone, dolomite, or silica powders) formed by crushing rocks appear virtually endless. Although significant experimental research has been carried out on GPC, with a major focus on the mix design development, rheological, durability, and mechanical properties of the GPC mixes; still the information available on the structural behavior of GPC is rather limited. This has implications in extending GPC application from a laboratory-based technology to an at-site product. This study investigates the structural behavior of quarry-rock-dust-incorporated fiber-reinforced GPC columns under concentric and eccentric loading. In this study, a total of 20 columns with 200 mm square cross-section and 1000 mm height were tested. The FA and SG were used as source materials to produce GPC mixtures. The QRD was incorporated as a partial replacement (20%) of SG. The conventional concrete (CC) columns were prepared as the reference specimens. The effect of incorporating quarry rock dust as a replacement of SG, steel fibers, and loading conditions (concentric and eccentric loading) on the structural behavior of GPC columns were studied. The test results revealed that quarry rock dust is an adequate material that can be used as a source material in GPC to manufacture structural concrete members with satisfactory performance. The general performance of the GPC columns incorporating QRD (20%) is observed to be similar to that of GPC columns (without QRD) and CC columns. The addition of steel fibers considerably improves the loading capacity, ductility, and axial load–displacement behavior of the tested columns. The load capacities of fiber-reinforced GPC columns were about 5–7% greater in comparison to the CC columns. The spalling of concrete cover at failure was detected in all plain GPC columns, whereas the failure mode of all fiber-reinforced GPC columns is characterized with surface cracking leading to disintegration of concrete cover.

Effects of Fly Ash and Granular Blast-Furnace Slag on Development Rate of Strength of Concrete

2014 ◽  
Vol 629-630 ◽  
pp. 371-375
Author(s):  
Ji Wei Cai ◽  
Si Jia Yan ◽  
Gong Lei Wei ◽  
Lu Wang ◽  
Jin Jin Zhou
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Development Rate ◽  
Mineral Admixture ◽  
Mineral Admixtures ◽  
Conventional Concrete ◽  
Enhancing Effect ◽  
Substitution Content ◽  
Furnace Slag

Fly ash (FA) and granular blast-furnace slag (GBFS) are usual mineral admixtures to conventional concrete, and their contents substituted for Portland cement definitely affect development rate of strength of concrete. C30 and C60 concrete samples with FA and/or GBFS were prepared to study the influence of substitution content of the mineral admixtures on 3 d, 7 d and 28 d strength. The results reveal that the development rate of strength in period from 3 d to 7 d gets slow with increasing content of mineral admixtures except for concrete with only GBFS less than 20%. In the case of substituting FA as the only mineral admixture for part of cement, the development rate of strength of C30 concrete in period from 7 d to 28 d keeps roughly constant even that of C60 concrete increases. When substituting mineral admixtures in the presence of GBFS for cement within experimental range, the development rate of strength in period from 7 d to 28 d gets fast with increasing substitution content. The enhancing effect of combining FA and GBFS occurs in period from 7 d to 28 d for both C30 and C60 concretes (FA+GBFS≤40%), even occurs in period from 3 d to 7 d for C60 concrete. Based on 7 d strength and the development rate, 28 d strength of concrete can be predicted accurately.

Evaluation of combined utilization of marble dust powder and fly ash on the properties and sustainability of high-strength concrete

2022 ◽  
Author(s):  
Zaryab Ahmed Rid ◽  
Syed Naveed Raza Shah ◽  
Muhammad Jaffar Memon ◽  
Ashfaque Ahmed Jhatial ◽  
Manthar Ali Keerio ◽  
...  
Keyword(s):  
Fly Ash ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Marble Dust

scholarly journals Resistance of Acid Attack on Geopolymer Concrete Developed with Partial Replacement of Course Aggregate by Recycled Aggregate

2019 ◽  
Vol 8 (4) ◽  
pp. 12142-12146
Keyword(s):  
Fly Ash ◽  
Coarse Aggregate ◽  
Recycled Aggregate ◽  
Partial Replacement ◽  
Geopolymer Concrete ◽  
Acid Attack ◽  
Great Strength ◽  
Conventional Concrete ◽  
Existing Structures ◽  
Binder Material

Geopolymer concrete is one of the major developments in recent years resulting in utilization of fly ash in huge quantities and eventually reducing cement consumption and ultimately reducing emission of greenhouse gases.The geopolymer concrete is produced by using activated fly ash as binder material instead of cement. Geopolymer concrete accomplishes great strength and looks similar to conventional concrete. Recycled coarse aggregate (RCA )which is coming from demolition of construction of old and existing structures has been used in this study. The durability property; acid attack resistance with partial replacement of coarse aggregate by recycled aggregate in geopolymer and conventional concrete for the different composition such as 10, 20, 30 and 40percentage for a period of 15, 45,75 and 105 days has been evaluated. From the results it was observed that in both natural and recycled aggregate of Geopolymer concrete is highly resistant to acids such as sulphuric acid and hydrochloric acid compared to conventional concrete of respective aggregates.

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