Feasibility Studies on Demolition Recycled Fine Aggregate and Sea Sand as Partial Preplacement to Natural Fine Aggregate in Concrete

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Kishor Kumar B. R ◽  
Kishor Kumar B. R ◽  
Kishor Kumar B. R ◽  
Kishor Kumar B. R
Keyword(s):  
Research Work ◽  
Feasibility Studies ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Test Results ◽  
Split Tensile Strength ◽  
The Sustainable Development ◽  
Recycled Fine Aggregate ◽  
Mix Proportion ◽  
Sea Sand

In this research work, an attempt is being made to partially replace the natural fine aggregate with sea sand and recycled fine aggregate obtained from demolished concrete waste in varied proportions to concrete mix and subject the specimens to mechanical strength tests for short and long durations of 7, 28, 56 and 90 days curing. The compressive strength, split tensile strength and flexural strength results of 30% mix proportion (15% Sea sand + 15% demolished waste sand) were found to be 58.3 N/mm2, 3.53 N/mm2 and 4.71N/mm2 respectively. All the three strength test results obtained were found to yield 15% higher strength than the control specimens. Finally, it can be concluded that partial replacement of natural fine aggregate by sea sand and demolition recycled fine aggregate in construction industry, not only eliminates the waste management problems and impacts on environment, but also leads to the sustainable development by reducing the consumption of natural resources.

scholarly journals Utilization of Iron Slag as Partially Replacement with Fine Aggrgate in High Strength SelfCompacting Concrete (HSSCC)

2019 ◽  
Vol 8 (11) ◽  
pp. 1177-1183
Keyword(s):  
Research Work ◽  
High Strength ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Iron Slag ◽  
Area Of Interest ◽  
Slump Flow ◽  
Super Plasticizer ◽  
Hardened Properties

lot of work within the field of normal mix concrete and Scc has been done in the last two decades. Utilization of different waste material from the different industries as the partial replacement of cement as well as aggregates both fine and coarse has been considered in the research work by different researchers as per their area of interest. No doubt use of Iron Slag has been in trend but only cement replacement is done with it. Research work in the replacing of Fine aggregate with iron slag in SCC has not been studied in detail. An aim was set to study the hardened properties and fresh properties of iron slag based HSSCC. Mix design of M60 grade of high strength selfcompacting concrete is done as per EFNARC guidelines. Testing of rheological properties of HSSCC with U- Box, Slump Flow, LFunnel, V- Box, apparatus were done. Testing of hardened properties of HSSCC for Split Tensile Strength, flexural strength, compressive strengthas per Indian standard guidelines. Replacement of Fine aggregate (20, 30, and 40%) was done with iron slag and further addition of Alccofine and super plasticizer was done.

scholarly journals A Performance Study on Partial Replacement of Polymer Industries Waste (PIW) as Fine Aggregate in Concrete

2018 ◽  
Vol 64 (3) ◽  
pp. 45-56 ◽  
Author(s):  
K. Srinivasan ◽  
J. Premalatha ◽  
S. Srigeethaa
Keyword(s):  
Mechanical Strength ◽  
Strength Properties ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Performance Study ◽  
Normal Concrete ◽  
Split Tensile Strength ◽  
Waste Plastic ◽  
The Sustainable Development ◽  
Plastic Wastes

AbstractRecycling of plastic wastes helps in reducing waste disposal problems and helps for the sustainable development of the country. Concrete with various % (0 to 55%) of waste plastic aggregates were tested for their mechanical strength properties. In the present work, plastic aggregates obtained as end product of a polymer recycle industry in the form of grains called as plastic aggregates are used as fine aggregate replacements in concrete. The addition of plastic aggregate as fine aggregate replacements results in increase in compressive strength, split tensile strength and flexural strength and thus helps in production of sustainable concrete. It is observed that, the optimum % of replacement of sand with waste plastic waste is 40% and it is also found that upto55% of sand replacements with plastic wastes, mechanical strength values are comparable with that of the normal concrete.

scholarly journals Inquiry on Mechanical Properties of M30 Grade Concrete with Partial Replacement of Copper Slag and Dolomite Powder for Fine Aggregate and Cement

2019 ◽  
Vol 8 (12) ◽  
pp. 4219-4223
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Cement Content ◽  
Copper Slag ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Cement Ratio ◽  
Mix Proportion ◽  
Chemical Admixture

Concrete plays an important role in every construction. This paper is an experimental investigation to study the mechanical properties of the concrete with partial replacement of cement by dolomite powder and fine aggregate by copper slag. So, in this investigation, by usage of Dolomite powder in concrete on one side improves density and other side improves strength and hardness. Copper slag also increases density of concrete and toughness of concrete. The cement content replaced with dolomite and fine aggregate replaced with copper slag from 5% to 25% at regular intervals of 5%. In the designed mix proportion of M30 grade concrete is 1:2.17:2.95. The Superplasticizer Master Rheobuild 920SH of 0.5% dosage used as chemical admixture is added to the concrete to maintain 0.45 the water-cement ratio. The concrete cubes, cylinders were casted. The different mechanical properties like compressive strength, split tensile strength, flexural strength were tested after 3 days, 7 days and 28 days of curing from 5 to 25% at regular intervals of 5% replacement of cement with dolomite powder and 10% to 50% at regular intervals of 10% replacement of fine aggregate with copper slag.

Experimental Study on the Mechanical behaviour of Concrete by Partial Replacement of Waste Iron Powder as Fine Aggregate: A Green Concrete Approach

2020 ◽  
Vol 6 (11) ◽  
pp. 126-130
Author(s):  
Arivalagan S
Keyword(s):  
Iron Powder ◽  
Research Work ◽  
Plain Concrete ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Natural Sand ◽  
Iron Slag ◽  
Main Challenge ◽  
By Products

The environment issues and its problems are very common in India due to growing of industrial by-products. Due to industrialization enormous by-products are produced and to utilize these by-products is the main challenge faced in India. Iron slag is one of the industrial by-product from the iron and steel making industries. Now from this study confirm that the use of iron slag overcome the pollution problems in the environment and save the world from global warming. In the current research work the properties of concretes with waste iron dust as fine aggregate were investigated. Waste iron dust was used as a partial replacement for sand at 10%, 20%,30% and 40% of concrete mixes. Compression strength, split tensile strength and flexural strength for 7, 14 and 28 days concrete of age were compared with those of concrete made with natural fine aggregates. From this experimental work it was proven that the waste iron powder added to the concrete had increases strength than the plain concrete. Increasing strength has been observed when replacing of waste iron powder by natural sand.

Properties of High Strength Fibre Reinforced Concrete Using Ultra Fine Slag

2016 ◽  
Vol 857 ◽  
pp. 183-188
Author(s):  
C. Mohan Lal ◽  
Vontary Sai Srujan Reddy
Keyword(s):  
High Strength Concrete ◽  
Steel Fibre ◽  
High Strength ◽  
Target Strength ◽  
Partial Replacement ◽  
Fibre Reinforced Concrete ◽  
Test Results ◽  
Design Requirement ◽  
Split Tensile Strength ◽  
Strength Concrete

High strength concrete has become a design requirement in recent years due to increase in number of infrastructure projects. This paper presents the effect of incorporating Ultra Fine Slag (UFS) and steel fibre to obtain high strength concrete. To achieve target strength of about 80 MPa, it is proposed to the replacement of cement of 10%, 20% and 30% with UFS and incorporating 0.5% and 1.0% fibre in concrete. An experimental investigation is carried out to find the mechanical properties of the concrete. From the test results, it was observed that a compressive strength of 95 MPa was achieved at 30% replacement of cement with UFS and 1.0% fibre content. In addition, there was a significant improvement in split tensile strength and flexural strength of the concrete. This study demonstrates that a high strength concrete can be obtained from partial replacement of cement with UFS and addition of steel fibre.

scholarly journals Valorization of Specially Designed Concrete by Using Sugarcane Bagasse Ash and Inducing the Special Benefits of Waste Tin Fiber Reinforced Concrete

2019 ◽  
Vol 8 (12) ◽  
pp. 220-224
Keyword(s):  
Tensile Strength ◽  
Portland Cement ◽  
Sugarcane Bagasse ◽  
Flexural Rigidity ◽  
Research Work ◽  
Fiber Reinforced Concrete ◽  
Target Strength ◽  
Test Results ◽  
Split Tensile Strength ◽  
Sugarcane Bagasse Ash

This research work has been investigated the agriculture solid waste of sugarcane bagasse ash (SCBA) materials replacing Portland cement and produces the assured quality of concrete. The current research work for various mixes of experimental test results shows the higher compressive strength was 37.51MPa at 28-days, 38.10 MPa at 56-days, the best mix consisting of SCBA (wet sieving method) content up to 15% (by weight of binding materials) along with 1.5% of waste tin fibers and also an excellent improvement trend was noted in flexural rigidity of concrete to addition of tin fibers shows the higher bending stress for all mixes except reference as well as more than 15% of SCBA concrete at different curing days. However, this study focused on the indirect measurement of tensile strength in SCBA concrete obtained the higher split tensile strength was 3.75MPa at 28-days, 3.95MPa at 56-days. It is concluded based on the various test results for different curing days the optimum replacement level of SCBA up to 15% of Portland cement was fixed and achieve the target strength of M25 grade of Portland cement concrete at 28 days.

The Properties of Fine Recycled Aggregate Concrete Containing Recycled Bricks from Construction and Demolition Waste

2018 ◽  
Vol 760 ◽  
pp. 193-198 ◽  
Author(s):  
Kristina Fořtová ◽  
Tereza Pavlů
Keyword(s):  
Recycled Aggregate Concrete ◽  
Construction And Demolition Waste ◽  
Recycled Aggregate ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Demolition Waste ◽  
Natural Sand ◽  
Aggregate Concrete ◽  
Freeze Thaw ◽  
Recycled Fine Aggregate

This paper presents research results of recycled fine aggregate concrete testing. The main aim of this contribution is verification of properties of fine aggregate concrete with partial replacement of fine natural aggregate by recycled masonry aggregate originated from construction and demolition waste. The influence of partial replacement of natural sand to mechanical properties and freeze-thaw resistance is described. The compressive strength and flexural strength were tested at the age of 28 and 60 days and after 25, 50, 75 and 100 freeze-thaw cycles. Partial replacement of natural sand was 0, 25 and 50 % for all these tests. Prismatic specimens were examined.

scholarly journals Use of Recycled Tyre Rubber in Non-structural Concrete

2018 ◽  
Vol 203 ◽  
pp. 06001
Author(s):  
Muhammad Bilal Waris ◽  
Hussain Najwani ◽  
Khalifa Al-Jabri ◽  
Abdullah Al-Saidy
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Coarse Aggregate ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Structural Concrete ◽  
Cement Ratio ◽  
Mix Proportion ◽  
Water To Cement Ratio ◽  
Concrete Blocks

To manage tyre waste and conserve natural aggregate resource, this research investigates the use of waste tyre rubber as partial replacement of fine aggregates in non-structural concrete. The research used Taguchi method to study the influence of mix proportion, water-to-cement ratio and tyre rubber replacement percentage on concrete. Nine mixes were prepared with mix proportion of 1:2:4, 1:5:4 and 1:2.5:3; water-to-cement ratio of 0.25, 0.35 and 0.40 and rubber to fine aggregate replacement of 20%, 30% and 40%. Compressive strength and water absorption tests were carried out on 100 mm cubes. Compressive strength was directly proportional to the amount of coarse aggregate in the mix. Water-to-cement ratio increased the strength within the range used in the study. Strength was found to be more sensitive to the overall rubber content than the replacement ratio. Seven out of the nine mixes satisfied the minimum strength requirement for concrete blocks set by ASTM. Water absorption and density for all mixes satisfied the limits applicable for concrete blocks. The study indicates that mix proportions with fine to coarse aggregate ratio of less than 1.0 and w/c ratio around 0.40 can be used with tyre rubber replacements of up to 30 % to satisfy requirements for non-structural concrete.

scholarly journals Suitability of Scoria as Fine Aggregate and Its Effect on the Properties of Concrete

2019 ◽  
Vol 11 (17) ◽  
pp. 4647 ◽  
Author(s):  
Warati ◽  
Darwish ◽  
Feyessa ◽  
Ghebrab
Keyword(s):  
Construction Materials ◽  
Energy Utilization ◽  
Engineering Properties ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Test Results ◽  
River Sand ◽  
Conventional Concrete ◽  
Efficient Energy ◽  
Concrete Production

The increase in the demand for concrete production for the development of infrastructures in developing countries like Ethiopia leads to the depletion of virgin aggregates and high cement demand, which imposes negative environmental impacts. In sustainable development, there is a need for construction materials to focus on the economy, efficient energy utilization, and environmental protections. One of the strategies in green concrete production is the use of locally available construction materials. Scoria is widely available around the central towns of Ethiopia, especially around the rift valley regions where huge construction activities are taking place. The aim of this paper is therefore to analyze the suitability of scoria as a fine aggregate for concrete production and its effect on the properties of concrete. A differing ratio of scoria was considered as a partial replacement of fine aggregate with river sand after analyzing its engineering properties, and its effect on the mechanical properties of concrete were examined. The test results on the engineering properties of scoria revealed that the material is suitable to be used as a fine aggregate in concrete production. The replacement of scoria with river sand also enhanced the mechanical strength of the concrete. Generally, the findings of the experimental study showed that scoria could replace river sand by up to 50% for conventional concrete production.

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