Sep 15, 2017018332An experimental investigation was carried out to study the durability properties of Coconut Shell CS aggregate concrete. Effect of mineral admixtures such as fly ash and ground granulated blast furnace slag GGBFS as partial replacement of cement on durability properties of CS aggregate concrete was also verified.
of concrete M20-11.53 produced using coconut shell as substitute for conventional coarse aggregate with 0, 25, 50, 100 partial replacement.
May 18, 2019018332The project aim is to analyze compressive strength characteristics of concrete produced using crushed, granular coconut shell and quarry dust as substitute for conventional coarse and fine aggregate respectively with partial replacement.
This paper centers around the study of physical and mechanical properties of concrete reinforced with coconut fibre and the coarse aggregates of which are partially replaced with coconut shells. American Concrete Institute ACI method has been used to design M20 concrete wherein coconut shells CS replaced the coarse aggregates CA by 6, 8, 10, 12 and 14 by volume.
Fine Aggregate Water Coarse Aggregate Coconut Shell Ash 2.1 Cement Cement is used right from ancient periods in construction industry.
Coarse Aggregate Coarse aggregate Aggregates predominately retained on a No. 4 4.75-mm sieve are classified as coarse aggregate. Generally, the size of coarse aggregate ranges from 5 to 150 mm. For normal concrete used for structural members such as beams and columns, the maximum size of coarse aggregate is about 25 mm.
weight aggregate concrete by using coconut shell. International Journal of Technical Research and Applications Volume 3, Issue 3. 8. Apeksha Kanojia, S.K. Jain, July 2015, Performance of coconut shell as coarse aggregate in concrete. International Research Journal of Engineering and Technology IRJET, Volume 02 Issue 04. 9.
The current Minnesota Department of Transportation specification for coarse aggregate to be used in concrete pavements is based on either a maximum absorption of 1.75 for Class B aggregate or a maximum carbonate content of 30 by weight for Class C aggregate.
1 CHAPTER-1 INTRODUCTION 1.1 GENERAL Concrete is widely used in construction industry. It is composed of fine aggregate and coarse aggregate bonded with fluid Cementitious Composite.
ties, mixture proportions, and economy. Fine aggregates Fig. 5-1 generally consist of natural sand or crushed stone with most particles smaller than 5 mm 0.2 in.. Coarse aggregates Fig.
Aggregate is the main constituent of concrete mix, hence in this study, coconut shell as partial replacement of fine and coarse aggregates were presented and discussed. In this study, the coarse and fine aggregates were partially replaced by coconut shell with percentages replacement of 0, 2.5, 5.0, 7.5 and 10.
Abstract The properties of concrete using coconut shell as coarse aggregate were investigated in an experimental study. Compressive, flexural, splitting tensile strengths, impact resistance and bond strength were measured and compared with the theoretical values as recommended by the standards.
AbstractProperties of concrete with coconut shells CS as aggregate replacement were studied. Control concrete with normal aggregate and CS concrete with 10 - 20 coarse aggregate replacement with CS were made. Two mixes with CS and fly ash were also made to investigate fly ash effect on CS replaced concretes.
coarse aggregate and coconut shells. Preparing the concrete cubes with coconut shells and gravel. Testing those cubes in compression testing PROCEDURE- 3.
E. Olanipekun, K. Olusola, O. AtaA comparative study of concrete properties using coconut shell and palm kernel shell as coarse aggregates Build. Environ., 41 2006, pp.
They found that the average fresh concrete density and 28-day cube compressive strength of the concrete using coconut shell aggregate were 1975 kg m-1 and 19.1 N mm-1, respectively. It is concluded that crushed coconut shells are suitable when it is used as substitute for conventional aggregates in lightweight concrete production.
high water absorption is expected, so coconut shell was dipped in water for 24 hours before its use. These CS were saturated surface-dry SSD condition before used in concrete mix.The coconut shell as coarse aggregate has properties Balamurugan amp Perumal 2013b as shown in Table 2.
CiteSeerX - Document Details Isaac Councill, Lee Giles, Pradeep Teregowda Abstract This experimental study have been carried out to find the combined effect of 50 manufacturing sand as fine aggregate replacement, coarse aggregate with 50 coconut shell and steel, sisal fibres as reinforcement in high strength concrete.
Mar 14, 2019018332Concrete is the most commonly used material employed for construction purpose in the world today , the expensive cost of concrete constituents such as cement, fine and coarse aggregate has necessitated the need to search for alternative construction materials 1, 2.The general importance of concrete application in construction projects and civil works cannot be overemphasized.
Coarse Aggregate Using Coconut Shell Damre ShraDDha1, FIrake hITalI1, DODe PraDeeP1, ... design a technical specification of concrete using coconut shell as aggregates ... proportion will be used as fine aggregate which passes through a 4.75 mm sieve. The material used will be having maximum particle size of 4.75mm.
Fine aggregate kg Coarse aggregate kg wc ratio ... 5 replacement of coarse aggregate with coconut shell polypropylene fibers with 2 weight of cement. ... Chart-5 28 days compressive strength of coconut shell concrete and concrete with coconut shell steel fiber . 16.7 21.7 13.54 17.53 9.89 15.
of concrete using coconut shell as coarse aggregate were investigated in an experimental study. Compressive, flexural, splitting tensile strengths, impact resistance and bond strength were measured and compared with the theoretical values as recommended by the standards. The bond properties were determined through pull-out test.
Concrete a composite man-made material is the most widely used building material in the construction industry.
The demand of concrete in construction is increasing day by day. The materials used for the concrete are cement, coarse aggregate, fine aggregate, water, admixtures if any. The use of cement causes the CO emission in the environment. So to reduce the emission of CO, the cement should be replaced or substituted by other materials.
and palm kernel shells as replacement for fine and coarse aggregate in the production of reinforced concrete slabs.
Therefore aggregate to be used in cement concrete should not be weaker than the strength of hardened cement paste. Determination of Crushing Strength of Aggregate Material for the standard crushing test should pass through 12.5 mm I.S. sieve and retained on 10 mm I.S. sieve. The aggregate shall be thoroughly sieved on the above sieves before test.
A typical concrete is a mixture of fine aggregate sand, coarse aggregate rock, cement, and water. Nowadays the usage of concrete is increasing from time to time due to the rapid development of construction industry.Today, there are many ways to enhance the quality and properties of concrete.
Coarse Aggregate Coarse aggregate of a size retained on a 1-inch 25 mm square opening sieve must not contain more than 8 of flat and elongated pieces when tested in accordance to ASTM D4791 at a 15 ratio. Reclaimed concrete aggregates must consist of clean, durable fragments of uniform quality.
Oct 14, 2020018332The aim of this study was to present the problem of durability of structural lightweight concrete made of a sintered fly ash aggregate. The issue of durability was researched for 12 concrete series in terms of their water absorption, water permeability, and freeze-thaw resistance. Additionally, the microstructure of several concretes was analyzed with a scanning electron microscope SEM.
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Sep 13, 2019018332For instance, if 1,000 units are produced at a total cost of 50,000, the average production cost per unit is 50. Dont confuse unit cost and marginal cost. They are not the same. The marginal cost is the expense of producing one more unit over the current production level. To illustrate, suppose ABC Company produces 10 units at a cost of 525.
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To covert wet volume to dry volume, the following formula is used -0.012 x 1.30 0.0156 m 3 In dry volume, the mortar is made of cement and sand and it is 30 to 35 more than wet volume. i.e. 1.30 x wet volume Now, dry volume for concrete is formed with cement, sand and aggregate i.e. 1.
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