scholarly journals Light Transmitting Concrete using Eco Friendly materials (Waste materials)

2020 ◽  
Vol 13 (3) ◽  
pp. 240-250
Author(s):  
A Jayaraman ◽  
S M Gowtham ◽  
N Praveen ◽  
V Hariharan ◽  
M Refak Afrith
Keyword(s):  
Optical Fiber ◽  
Fine Aggregate ◽  
Light Weight ◽  
Dead Weight ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Recycled Glass ◽  
Aluminum Metal ◽  
Substantial Change ◽  
Light Weight Aggregate

Concrete is a composite material composed of fine and coarse aggregate bonded together with fluid cement that hardens over time. Now days mostly the construction researchers have been trying to improve the quality and reduced dead weight of the structure and enhance its performance. In this current situation there is a demand in natural sand so engineers are using manufactured sand. The aim of our project is to reduce the dead weight of the structure as well increase the strength of the concrete.So we developed light weight aggregate and sand by using waste plastic and glass materials. We developed a concrete by using crushed glass bottles and melted plastic which is considered as light weight concrete. Glass is an ideal material for recycling use of recycled glass helps in energy saving. This indicate that glass can be effectively used as a fine aggregate replacement without substantial change in strength and also we used aluminum metal powder for reducing the member weight by introduced air in concrete. For the innovative and aesthetic purpose we made the concrete to glow using plastic optical fiber which acts as a transmitting agent which also called as translucent concrete in which the optical fiber is inserted in parallel way. We used epoxy to harden the optical fiber (0.75mm) and M20 grade concrete.

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.

Compressive Strength of Concrete with Recycled Glass as Partial Aggregate Replacement

2014 ◽  
Vol 803 ◽  
pp. 21-25 ◽  
Author(s):  
Roszilah Hamid ◽  
M.A. Zubir
Keyword(s):  
Glass Sample ◽  
Coarse Aggregate ◽  
Control Sample ◽  
Fine Aggregate ◽  
Portland Cement Concrete ◽  
Natural Sand ◽  
Recycled Glass ◽  
Compressive Strength Of Concrete ◽  
Significant Increment ◽  
Control Samples

In this study, recycled glass is used to replace the natural fine aggregate in different mix proportions to obtain the optimum combination that will produce the highest strength. The control samples are Grade 30 ordinary Portland cement concrete (OPCC) containing 100% natural sand and coarse aggregate. The recycled glass concretes contain 70% natural fine aggregate + 30% size 300 micron crushed glass (Sample 2), and 70% fine aggregate + 15% size 300 micron crushed glass + 15% size greater than 300 micron crushed glass (Sample 3). The compressive strengths of the concrete samples with recycled glass are higher than the control samples at all ages of 7, 28, 56 and 90 days. At age 60 days, the strength gain of the control samples shows no significant increment but both samples that include recycled glass still show significant increment in strength. It is found that recycled glass performed better when utilised at size 300 microns and less. The recorded strength of the control, Sample 2 and 3 at 90 days are 47, 61 and 55 MPa.

The Flexural Properties of Reinforced Recycled Glass Concrete Beam

2014 ◽  
Vol 803 ◽  
pp. 325-329 ◽  
Author(s):  
Roszilah Hamid ◽  
M.A. Zubir
Keyword(s):  
Flexural Strength ◽  
Glass Sample ◽  
Control Sample ◽  
Fine Sand ◽  
Fine Aggregate ◽  
Portland Cement Concrete ◽  
Natural Sand ◽  
Recycled Glass ◽  
Toughness Index ◽  
Control Samples

In this study, recycled glass is used to replace the natural fine aggregate in different mix proportions. The control samples are Grade 30 ordinary Portland cement concrete (OPCC) containing 100% natural sand and coarse aggregate. The recycled glass concretes contain 70% natural fine aggregate + 30% size 300 micron crushed glass (Sample 2), and 70% fine aggregate + 15% size 300 micron crushed glass + 15% size greater than 300 micron crushed glass (Sample 3).The recorded strength of the control, Sample 2 and 3 at 90 days are 47, 61 and 55 MPa. Although the compressive strength for the concrete samples with recycled glass are higher than the control samples, the flexural test results show that, concrete with recycled glass has less ability to be fully functioning as a reinforced concrete by exhibiting their flexural strength at 91 % and 84% of the theoretical flexural strength whereas for the control specimen, its flexural strength is 10% higher than the theoretical value. Nonetheless, the toughness index of recycled glass concrete with 30% replacement of fine sand with recycled glass powder is at par with the control samples, which shows the ductile behavior of the recycled glass 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 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 Strength Appraisal of Light Weight Green Concrete Made with Cold Bonded Fly Ash Coarse Aggregate

2019 ◽  
Vol 8 (3) ◽  
pp. 5381-5385
Keyword(s):  
Fly Ash ◽  
Coarse Aggregate ◽  
Crushed Stone ◽  
Artificial Light ◽  
Fine Aggregate ◽  
Light Weight ◽  
River Sand ◽  
Manufactured Sand ◽  
Fly Ash Concrete ◽  
Coarse Aggregates

This study focusses on the development of fly ash concrete made with water/cement ratio of 0.5.To develop fly ash concrete in this study, 40% of cement is replaced with fly ash, manufactured sand is used as fine aggregate, light weight fly ash aggregate as used coarse aggregate and for mixing concrete instead of tap water 12% lime concentrated water is used. The fly ash concrete compressive strength obtained is equivalent to that of M30 grade concrete made with OPC. Two sets of samples are prepared one set with 40% fly ash concrete made with river sand and natural crushed stone coarse aggregates and another set of sample with 40% fly ash concrete made with manufactured sand and artificial light weight fly ash coarse aggregates. Experimental studies revealed that use of manufactured sand enhanced compressive, tensile and flexural strengths by 6-8% only. Even permeation properties such as water absorbtion and porosity of fly ash concrete made with manufactured sand and artificial light weight fly ash coarse aggregates is almost similar to that of fly ash concrete made with made with river sand and natural crushed stone coarse aggregates. The results conclude that fly ash coarse aggregates can be used for structural applications instead of natural coarse aggregates but not feasible for use in pavement as per IS 2386. Manufactured sand can be used as 100% replacement to river sand in fly ash based concretes with improved properties of concrete

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.

Compared Research on Elastic Modulus Strength between Manufactured Sand Concrete and Ordinary Concrete

2012 ◽  
Vol 517 ◽  
pp. 606-610
Author(s):  
Sheng Dong He ◽  
Li Xin Liu ◽  
Qian Qian Li ◽  
Zhi You Zhang
Keyword(s):  
Compressive Strength ◽  
Elastic Modulus ◽  
Fine Aggregate ◽  
Replacement Rate ◽  
Replacement Ratio ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Ordinary Concrete ◽  
Increasing Trend ◽  
The Relationship

Now, the resource of high quality natural sand is lacking. Manufactured sand is broken by rocks or tailings, which could be used in the mixture of cement concrete as fine aggregate instead of natural sand. The use of manufactured sand in concrete structure has become more and more important. It can make construction industry develop with environmentally friendliness and sustainability. In this paper, the elastic modulus strength was compared between manufactured sand concrete and ordinary concrete by testing on concrete specimens using the manufactured sand, the replacement ratios of manufactured sand by mass to the natural sand are 0, 0.30, 0.5, 0.70 and 1.0 respectively. The experimental research showed that the elastic modulus strength of manufactured sand concrete was stronger than that of natural sand and it had an increasing trend with the increasing of replacement rate and age but the elastic modulus of replacement rate of 50% was largest. This showed that the optimum replacement ratio was 50%.The fitting relations between elastic modulus and compressive strength was different with that of ordinary concrete. The relationship equation between elastic modulus strength and compressive strength of manufactured sand concrete was recommended in this paper. This could be used as a reference for the applications of the concrete using the manufactured sand as a fine aggregate in engineering.

Behaviour of Conventional Concrete Treated with Robo Sand and Iron Shavings

2021 ◽  
Vol 1019 ◽  
pp. 110-117
Author(s):  
D. Sathyanarayana ◽  
R. Padmapriya
Keyword(s):  
Matrix Material ◽  
Fine Aggregate ◽  
Natural Sand ◽  
Conventional Concrete ◽  
Total N ◽  
Manufactured Sand ◽  
The Matrix ◽  
Alternative Material ◽  
Construction Purpose ◽  
Land Sliding

This paper deals with impact of M-sand utilization rather than ordinary fine total (N-Sand) and iron shavings as far as volume of cement to improve the elastic nature of the matrix material. Basically, concrete is a composite material invented in ancient period for construction purpose. Out of the total volume of concrete 30% of volume filled with fine aggregate which is brought from digging of rivers, lakes, and canals, which causes serious tread to environment by land sliding. Now this research is carried out to identify the suitability of alternative material instead of natural sand. In this context manufactured sand produced from crushing of basalt stone is being replaced in various percentages as 0%, 20%, 40%, 60%, 80% and 100% in the place of natural sand for M25 Grade concrete. Also Iron shavings was added at 0%, 2%, 4%, 6%, 8% and 10% for total volume of concrete.

scholarly journals Predicting Slump Values of Concrete Made by Pozzolans and Manufactured Sand using ANN

2022 ◽  
Vol 10 (5) ◽  
pp. 66-72
Author(s):  
Kiran M.Mane ◽  
◽  
S.P. Chavan ◽  
S.A. Salokhe ◽  
P.A. Nadgouda ◽  
...  
Keyword(s):  
Fine Aggregate ◽  
Ann Model ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Environmental Consequences ◽  
Pozzolanic Material ◽  
Software Model ◽  
Alternative Materials ◽  
Model Training ◽  
Artificial Neural Network Ann

Large amounts of natural fine aggregate (NFA) and cement are used in building, which has major environmental consequences. This view of industrial waste can be used in part as an alternative to cement and part of the sand produced by the crusher as fine aggregate, similar to slag sand (GGBFS), fly ash, metacaolin, and silica fume. Many times, there are issues with the fresh characteristics of concrete when using alternative materials. The ANN tool is used in this paper to develop a Matlab software model that collapses concrete made with pozzolanic material and partially replaces natural fine aggregate (NFA) with manufactured sand (MS). Predict. The slump test was carried out in reference with I.S11991959, and the findings were used to create the artificial neural network (ANN) model. To mimic the formation, a total of 131 outcome values are employed, with 20% being used for model testing and 80% being used for model training. 25 enter the material properties to determine the concrete slump achieved by partially substituting pozzolan for cement and artificial sand (MS) for natural fine aggregate (NFA). According to studies, the workability of concrete is critically harmed as the amount of artificial sand replacing natural sand grows. The ANN model's results are extremely accurate, and they can forecast the slump of concrete prepared by partly substituting natural fine aggregate (NFA) and artificial sand (MS) with pozzolan.

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