scholarly journals Feasibility Study on the Utilization of Manufactured Sand as a Partial Replacement for River Sand

2021 ◽  
Keyword(s):  
Sodium Sulphate ◽  
Sediment Supply ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Freezing And Thawing ◽  
River Sand ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Loss Of Weight ◽  
Huge Impact

Abstract. Continuous extraction of sand is having a huge impact on the natural river beds which has resulted in lowering of water table and a decrease in the amount of sediment supply. Despite the quantity of sand used in our day-to-day activities, our dependence on sand is significantly increasing. The use of manufactured sand as a fine aggregate in concrete draws the attention of many investigators and researchers. The present investigation includes the study of soundness and EDAX .The test results depicted that for M-sand substituted concrete the loss of weight, when subjected to alternate cycles of freezing and thawing when tested with magnesium and sodium sulphate solution was found to be less when compared with natural sand. The important observation is that the inclusion of manufactured sand in concrete reduces the pores present in concrete resulting in matrix densification and makes the concrete impermeable and substantially reduces the rate of oxygen diffusion and reduces the corrosion process as well. This paper also focuses on the effect of manufactured sand as a fine aggregate in the elastic and bond characteristics of concrete.

scholarly journals Studies on manufactured sand effect on mechanical properties of geopolymer concrete as replacement of river sand in fine aggregate

2021 ◽  
Vol 309 ◽  
pp. 01114
Author(s):  
K. Veera Babu ◽  
T. Srinivas ◽  
Mahathi Tummala
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Construction Material ◽  
Environmental Concerns ◽  
Fine Aggregate ◽  
Geopolymer Concrete ◽  
River Sand ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Low Calcium

Concrete is the most adaptable, long-lasting, and dependable construction material on the planet. There are numerous environmental concerns associated with the production of OPC, and natural sand is becoming more expensive and scarce as a result of unlawful river sand dredging. The greatest replacement material for traditional concrete is geopolymer concrete with low calcium fly ash. The purpose of this paper is to investigate the mechanical properties of geopolymer concrete of grades G30 and G50, which are equivalent to M30 and M50, when river sand is substituted in various quantities with manufactured sand, such as 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. When compared to the equivalent grades of controlled concrete, geopolymer concrete improves mechanical properties such as compressive, tensile, and flexural strengths.

scholarly journals Behavior of RC Beam under Monotonic and Cyclic Loading using Waste Materials as Fine Aggregate

2019 ◽  
Vol 8 (6) ◽  
pp. 2021-2027
Keyword(s):  
Thermal Power ◽  
Bottom Ash ◽  
Reinforced Concrete Beam ◽  
Absorption Capacity ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Rc Beam ◽  
River Sand ◽  
Manufactured Sand ◽  
Granite Powder

Crusher sand or Manufactured sand (M-Sand) obtained from stone aggregate quarries is widely used as fine aggregate in concrete to avoid the depletion of natural river sand. To avoid air and land pollution due to direct dumping of wastes in open land area from granite processing industries and thermal power stations, the behavior of reinforced concrete beam without waste (RC beam) and with waste (RCW beam) materials like granite powder (10%) and bottom ash (10%) as combined partial replacement for M-Sand was carried out. The parameters like load carrying capacity, ductility, energy absorption capacity and stiffness degradation were evaluated. The behavior of all the parameters of both the beams was similar and there was slight decrease (10%) in strength parameters due to increase in fine pore particles. Hence, the granite powder and bottom ash can be used as partial replacement for fine aggregate in building constructions

scholarly journals Durability Properties of Self Compacting Concrete by using M-Sand as Fine Aggregate

2019 ◽  
Vol 8 (3) ◽  
pp. 8354-8358
Keyword(s):  
Fine Aggregate ◽  
Self Compacting Concrete ◽  
River Sand ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Durability Properties ◽  
Fine Aggregates ◽  
Alternative Material ◽  
Chloride Attack ◽  
Level Constant

Self-compacting concrete is also called as self consolidated concrete which does not require vibration for placing and compaction. In the present trend scarcity of natural sand become a huge problem to construction industry, inorder to reduce this problem alternatives are used, one of the alternative material is Manufactured sand. Manufactured sand is produced from hard granite stone by crushing. There are two reasons to M-sand i.e, availability & transportation. An attempt was made to evaluate the workability and strength characteristics & durability properties of self compacting concrete with river sand and manufactured sand as fine aggregates. For each replacement level, constant workability was maintained by varying the dosage of superplasticizer. Sulphate attack and chloride attack of the specimens were determined. Different proportions of solution are used for durability study.

scholarly journals Comparison of Conventional Concrete and Replacement of River Sand by Waste Foundry Sand and Cement by Nano-Silica

2020 ◽  
pp. 201-205
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Nano Silica ◽  
River Sand ◽  
Conventional Concrete ◽  
Foundry Sand ◽  
Concrete Production ◽  
Waste Foundry Sand

This paper presents an experimental investigation on the properties of concrete in which like cement is partially replacing by used nano silica and is partially replacing by used waste foundry sand. Because now a day the world wide consumption of sand as cement and as fine aggregate in concrete production is very high. Nano silica and waste foundry sand are major by product of casting industry and create land pollution. The cement will be replaced with nano silica and the river sand will be replaced with waste foundry sand (0%, 5%, 10%, 15%, 20%). This experimental investigation was done and found out that with the increase in the nano silica and waste foundry sand ratio. Compression test has been done to find out the compressive strength of concrete at the age of 7, 14, 21, and 28. Test result indicates in increasing compressive strength of plain concrete by inclusion of nano silica as a partial replacement of cement and waste foundry sand as a partial replacement of fine aggregate.

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.

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 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.

Strength and Corrosion Resistive Properties of Concrete Containing Quarry Dust as Fine Aggregate with GGBFS

2011 ◽  
Vol 243-249 ◽  
pp. 5775-5778 ◽  
Author(s):  
M. Devi ◽  
K. Kannan
Keyword(s):  
Strength Properties ◽  
Chloride Ions ◽  
Partial Replacement ◽  
Optimum Level ◽  
Fine Aggregate ◽  
Split Tensile Strength ◽  
Natural Sand ◽  
Weight Loss Method ◽  
Loss Method ◽  
Quarry Dust

Demand for natural sand in concrete is increasing day by day since the available sand cannot meet the rising demand of construction sector. This paper reports the experimental study undertaken to investigate the influence of partial replacement of cement with Ground Granulated Blast Furnace Slag(GGBFS) in concrete containing quarry dust as fine aggregate. The cement was replaced by 10%, 20%, 30%, 40% and 50% of GGBFS and tests were conducted to determine the optimum level of replacement of GGBFS in quarry dust concrete. The specimens were subjected to compressive strength, split tensile strength, flexural strength, and bond strength tests at 7days, 28days, 56days, 90days and 150 days. The resistance to corrosion is evaluated based on the performance of the concrete for the penetration of chloride ions by means of impressed voltage technique in saline medium and Gravimetric weight loss method. Results herein reveal that an increase in slag proportion increases the strength properties and decreases the rate and amount of corrosion of reinforcement and among the various percentages of replacement 40% is found to be optimum with better strength and corrosion resistance properties.

Investigation of Pore Structure for Manufactured Sand Mortar

2014 ◽  
Vol 534 ◽  
pp. 39-51
Author(s):  
Zheng Hong Tian ◽  
Jing Wu Bu
Keyword(s):  
Pore Structure ◽  
Pore Size ◽  
Water Saturation ◽  
Total Porosity ◽  
Threshold Region ◽  
Fine Aggregate ◽  
Test Results ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Threshold Radius

This paper focuses on the pore structure parameters of mortars produced with manufactured sand and natural sand via water saturation and MIP methods. Test results show that, total porosity, as well as compressive strength, of manufactured sand mortar, is higher than that of natural sand mortar at fixed w/c and s/c ratio. Furthermore, considerable volume of large pores present in specimens of manufactured sand at higher w/c ratio rather not at the lower w/c ratio, which caused by the larger binder-aggregate interface. Manufactured fine aggregate in mortar probably accelerate hydrated reaction of cement, which result in the most probable pore size is finer than that of natural sand mortar. It can be concluded that the threshold region becomes flatten and threshold radius increases due to the aggregate volume concentration rises. Finally, a new theoretical model with a double-lognormal distribution function is demonstrated to be reasonable to fit pore size distribution in mortars.

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