The growing problem in waste prompted the researchers to use coconut shell as additives in concrete mixture, and to determine whether it significantly increases the flexural and compressive strength of concrete. This study used experimental design to determine the effectiveness of adding crushed coconut shell as additives in concrete mixture.
Aug 03, 2020· series of concrete specimen with aggregate-coconut waste mix proportions of 0% (conventional), 15%, 30% and 45% were employed. Each proportion consisted of equal amounts of coconut shell and coir fiber per unit of volume. The concrete specimens were cured for 14 and 28 days before testing for its compressive strength and water absorption.
Since the concrete strength of coconut shell with mix ratio 1:11/2:3, attained 16.5N/mm2 at 28 days it can be used in plain concrete. Hence cost reduction of 48% will be achieved. INTRODUCTION The overall relevance of concrete in virtually all civil engineering practice and building construction works cannot be over emphasized. ...
The possibility of utilizing recycled coconut shell aggregates in concrete as coarse aggregate is examined in the present study. An optimum percentage replacement of coarse aggregate with coconut shell aggregate is determined from the study. Coarse aggregate made from coconut shells were used in proportions of 5%, 10%, 15%, 20%, 25%, 30% and 35 ...
use of waste coconut shell for concrete production. Key words: coconut shell, concrete, coarse aggregate, compressive strength, waste disposal. nation's pollution problem as a solid waste in the 1. INTRODUCTION Concrete is a composite material which composed of aggregates, cement and water. Concrete is used more than
cement. Agricultural waste material, in this case, coconut shells, which is an environmental pollutant, are collected and burnt in the open air (uncontrolled combustion) for three hours to produce coconut shell ash (CSA), which in turn was used as pozzolana in partial replacement of cement in concrete …
Coconut Shell, Concrete, 1. Introduction . 1.1 Concrete: - A composite material that consists essentially of a binding medium, such as a mixture of Portland cement and water, within which are embedded particles or fragments of aggregate, usually a combination of fine and coarse aggregate. Concrete is by far the most
technology world. Agricultural waste material such as coconut shells were collected and pulverized in the furnace from C to C for four hours to produce coconut shell ash (CSA), after XRF analysis was carried out to determine its pozzolanic property, which was used as partial replacement of cement in concrete production.
Table 3: Workability of Concrete (slump inches) Coconut Shell Replacement 0% 10% 20% 30% Slump (in) 4 3.8 3.2 2.7 The variation of the slump with the replacement of a coconut shell aggregate is shown in Table 3. The results indicate that the slump tends to increase with the increment of coconut shell percentages, resulting in higher workability
Jan 01, 2021· As the fraction of coconut shell in concrete increases, the density of the concrete decreases because the specific gravity of conventional aggregates is around 2.67 while the specific gravity of CS aggregates is around 1.33 . It will fall under the category of Light weight concrete. Coconut shells are flaky and irregular in shape.
coconut shell used as a light weight aggregate in concrete, the properties of coconut shell concrete examined, Control concrete with normal aggregate and CS concrete with 10 - 30% coarse aggregate replacement with CS were made, and Constant water to cementitious ratio of …
(CSA) with various proportions in concrete. Coconut shell is available in abundant quantity in local agricultural fields and considered as waste product. On the other hand, cement production emits a lot of toxic gases in the atmosphere which causes environmental pollution and greenhouse gases. Thus, CSA might be utilized as a cementitious ...
2.70. This indicates that coconut shell is lighter than coarse aggregate and more volume of coconut shell will be required to replace equal weight of coarse aggregate in concrete. The bulk density of coconut shell obtained is 648 which far less thanis about 1437 of coarse aggregate implying its good for lightweight concrete.
Jun 01, 2017· M20 mix design was carried out for control mix (i.e. without coconut shell) according to Indian standards .Detailed procedure of mix design is provided in Annexure A.The concrete mix was designed for slump of 60 mm.Using same mix design, coconut shell concrete was prepared by replacement of conventional crushed coarse aggregate (CA) with waste coconut shell (CS).
consume large quantity of waste coconut shell and fibers by mixing it in the concrete mass. Using agricultural and forest residues for industrial purposes is much more environment safe and friendly more than any other method of waste disposal being commonly adopted nowadays. Research and development in the construction industry are shifting towards an exploration of cellulose farm waste …
SHELL CONCRETE 01.Study of Coconut Shell at microscopic level by Scanning Electron Microscope(S.E.M),and X-Ray Diffraction(X.R.D) 02.Evaluating Bond strength of concrete: Pull Out Test Push Out Test Prism Pull Out Test 03.Effects on divergent Admixtures on Coconut Shell Concrete 04.Coconut Shell-Cement Compatiblity by Marsh Cone Test. 05.Drying ...
coconut shells in concrete. A control mix was designed for M 25 grade of co ncrete and then the crushed granite aggregates were replaced with coconut shells by volume in different levels such as 20%, 40 %, 60%, 80% and . The mechanical
Coconut shell aggregate concrete satisfies the requirements of ASTM C 330. 4. Conclusıon To increase the speed of construction, enhance green construction environment we can use lightweight concrete. The possibility exists for the partial replacement of coarse aggregate with coconut shell to produce lightweight concrete. Coconut shell exhibits
Figure-2. Density of asphaltic concrete at different coconut shell replacement. Voids in total mix VTM is the total volume of small pockets of air between the coated aggregate particles throughout a compacted paving mixture. The effects of asphaltic concrete containing coconut shell are summarized in Figure-3.
Abstract––Properties 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.
Mar 03, 2020· This study investigated the effect of adding fly ash on the mechanical and durability characteristics of coconut shell (CS) concrete. Two different mixes were developed, one with CS and the other with conventional aggregate and CS as coarse aggregate. Cement was replaced with Class F fly ash in terms of weight at 0, 10, 20, and 30% in both mixes.
freshly discarded Coconut shells were collected from a local oil mill. The coconut shells were crushed using concrete hammers to a size such that it passes through a 20mm sieve and retained on 4.75mm sieve. Crushed shells were washed to remove fibers, mud, etc from them. The washed shells were dried in sunlight for 2 days.
the compressive, tensile and flexural behavior of concrete modified with coconut shell aggregate. In order to test the above properties and compare with that of concrete without any coconut shell aggregate, a control concrete mix was designed as per IS 10262 2009 [8] for concrete of grade of M20.
The coconut shell concrete was designed for characteristic strength of 30MPa with the incorporation of coconut shell as replacement for fine and coarse aggregate at 10%, 20% and 30% of volume fractions respectively. The workability, compressive strength as well as densities and water absorption of 96 cured
Apr 29, 2019· The study focuses on density, compressive strength, tensile strength and flexural behaviour of the coconut shell eco-concrete. Two different mixes are developed, one with coconut shell and the other with conventional aggregate and coconut shell as coarse aggregate. The cement content is replaced with class F fly ash at 0%, 10%, 20% and 30% by ...
crushed coconut shells were washed and dried and experimentally it has been found that specific gravity of Coconut shells is 1.45. B. Mix Proportion and Casting: M-40 grade concrete is designed as per IS 10262 : 2009, three mix were prepared 10%, 15% and 20%.coconut shells. These five mix are cased in 150mm* 150mm* 150mm
Oct 05, 2020· Use of Coconut Shell as Coarse Aggregate in Lightweight Concrete. ABSTRACT This research work reports the investigation carried out to determine the use of coconut shell as an aggregate in light weight concrete. Concrete samples were produced with different mix ratios, to determine the best and economic proportions that will give acceptable ...
The average fresh concrete density and 28-day cube compressive strength of the concrete using coconut shell aggregate were 1975 kg/m 3 and 19.1 N/mm 2 …