scholarly journals Characterization of lightweight cement concrete with partial replacement of coconut shell fine aggregate

2019 ◽  
Vol 1 (6) ◽  
Author(s):  
Sunday U. Azunna ◽  
Farah N. A. A. Aziz ◽  
Pang M. Cun ◽  
Mohamed M. O. Elhibir
Keyword(s):  
Coconut Shell ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Cement Concrete

scholarly journals UTILIZAÇÃO DA CINZA DA CASCA DO COCO VERDE COMO SUBSTITUIÇÃO PARCIAL DO CIMENTO PORTLAND EM ARGAMASSAS

2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Cleidson Carneiro Guimarães ◽  
Samile Raiza Carvalho Matos
Keyword(s):  
Portland Cement ◽  
Environmental Impacts ◽  
Industrial Waste ◽  
Coconut Shell ◽  
Partial Replacement ◽  
Index Analysis ◽  
Hardened State ◽  
Materials Used ◽  
Strength And Durability

RESUMO: O presente trabalho tem como objetivo principal avaliar a influência da cinza da casca de coco verde (CCCV) nas propriedades das argamassas no estado fresco e endurecido, a partir da substituição parcial do cimento Portland (CP) por cinza. Esta proposta surge da problemática ligada à destinação da casca do coco como resíduo urbano e agroindustrial e dos impactos ambientais provocados pela produção do cimento Portland. Para realização dessa pesquisa foram produzidas uma argamassa de referência e outras três argamassas com diferentes teores de substituição do CP por CCCV. Inicialmente, foi feita a caracterização dos materiais utilizados no trabalho e a análise de índice de pozolanicidade da cinza. Em seguida, foram feitas análises referenciais das propriedades das argamassas produzidas no estado fresco e no estado endurecido. A partir das análises pode-se perceber que a presença da cinza na argamassa influencia na trabalhabilidade, resistência mecânica e na durabilidade da argamassa e que a CCCV não possui potencial pozolânico. A adição de até 10% de CCCV substituindo o cimento Portland é viável.
 
 ABSTRACT: This study aims to evaluate the influence of ash green coconut shell (AGCS) on the properties of mortars in fresh and hardened, from the partial replacement of Portland cement (PC) by gray. This proposal arises from problems linked to the allocation of coconut shell as urban and agro-industrial waste and environmental impacts caused by the production of Portland cement. For this survey were produced a reference mortar and three mortars with different CP replacement levels by AGCS. Initially, it was the characterization of the materials used at work and ash pozzolanicity index analysis. Next, analyzes were made reference the properties of mortars produced in fresh and hardened state. From the analysis it can be seen that the ash presence in the mortar influences the workability, strength and durability of the mortar and the CCCV not have pozzolanic potential. The addition of up to 10% AGCS replacing the Portland cement is feasible.

scholarly journals AN EXPERIMENTAL STUDY OF CONCRETE MIXED WITH COCONUT SHELL HUSK AS PARTIAL REPLACEMENT OF FINE AGGREGATE

2019 ◽  
Vol 12 (03) ◽  
pp. 1621-1626
Author(s):  
S. Prakash Chandar ◽  
K .Gunasekaran ◽  
S . Saravanan ◽  
R . Ramasubramani
Keyword(s):  
Experimental Study ◽  
Coconut Shell ◽  
Partial Replacement ◽  
Fine Aggregate

scholarly journals INVESTIGATION OF MECHANICAL PROPERTIES OF PAVER BLOCK MADE WITH EVA POLYMERS AND FLY ASH

2021 ◽  
Vol 9 (02) ◽  
pp. 694-702
Author(s):  
K. Hariharan ◽  
◽  
A. Krishna Moorthy ◽  
Keyword(s):  
Fly Ash ◽  
Coarse Aggregate ◽  
Block Design ◽  
Mix Design ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Curing Process ◽  
Cement Concrete ◽  
Ethyl Vinyl ◽  
Water Absorption Test

The aim of the project is to replace cement with fly ash and course aggregate with Ethyl Vinyl Acetate (EVA) in paver block. In this thesis paver block design is by using cement concrete mixture of mix design M30 which is composed of 10mm coarse aggregate cement and fine aggregate (M-sand).In this thesis the cement is partially replaced with fly ash and partial replacement of EVA with coarse aggregate in paver block at various level of 5, 10, 15, and 20 percentage of its weight. The paver block curing process is done for 7days and 28days. After curing it is checked for its compression strength, water absorption test and densitytest.

scholarly journals Shrinkage Study and Strength Aspects of Concrete with Foundry Sand and Coconut Shell as a Partial Replacement for Coarse and Fine Aggregate

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7420
Author(s):  
Kalyana Chakravarthy Polichetty Raja ◽  
Ilango Thaniarasu ◽  
Mohamed Abdelghany Elkotb ◽  
Khalid Ansari ◽  
C Ahamed Saleel
Keyword(s):  
Drying Shrinkage ◽  
Coconut Shell ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
River Sand ◽  
Conventional Concrete ◽  
Foundry Sand ◽  
Current Observation ◽  
Waste Foundry Sand ◽  
Natural Aggregates

The demand for natural aggregates (river sand) is increasing day by day, leading to the destruction of the environment, a burden that will be passed on to young people. Further, wastes from various industries are being dumped in landfills, which poses serious environmental problems. In order to ensure sustainability, both the issues mentioned above can be solved by utilizing industrial waste as aggregate replacement in the concrete construction industry. This research is done to find out the results using two substances viz., waste foundry sand (WFS) and coconut shell (CS) substitute for river sand and coarse aggregate. Many researchers have found the maximum benefits of substituted substances used in cement, which has material consistency. This current observation explores these strong waste properties of waste-infused concrete and cement, which experience shrinkage from drying out. The replacement levels for waste foundry sand were varied, between 10%, 20%, and 30%, and for CS, it was 10% and 20%. The experimental outcomes are evident for the strength, which increases by using WFS, whereas the strength decreases by increasing the CS level. The concrete that experiences shrinkage from drying out is included in the waste material, showing a higher magnitude of drying shrinkage than conventional concrete.

scholarly journals Investigation on Mechanical properties of Partial replacement of Saw-Dust to Fine-Aggregate in Coconut-Shell Concrete

2018 ◽  
Vol 7 (2.12) ◽  
pp. 415
Author(s):  
Anandh S ◽  
Gunasekaran K
Keyword(s):  
Solid Waste ◽  
Coconut Shell ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Light Weight ◽  
Coconut Fiber ◽  
Conventional Concrete ◽  
Saw Dust ◽  
Fine Aggregates ◽  
Concrete Production

Concrete is the major composite material used in construction industry, it is strong in Compression and weak in tension and also has high self-weight. The light weight concrete was a alternative to conventional concrete due its low weight it decreases the self weight. Comparatively by using the light weight materials that occur either naturally or industrial waste, these material helps in reducing the cost and to improve the performance. Presently in India, more than 960 million tones of solid waste were being generated annually as by-products during industrial, agricultural mining and other processes. This paper deals with coconut shell concrete, which is one of the solid waste in the environment, and the use of this coconut shell as a replacement to coarse aggregate will reduce the weight of concrete by 25%. The other waste that was disposed mostly was sawdust. It was a byproduct of cutting or drilling of wood with saw or other tool. It is composed of fine particles of wood. It is having many advantages over traditional concrete like low bulk density, better heat preservation and heat insulation property. As said earlier to make concrete strong in tension coconut fiber is added, which is a waste material that left to disposal and as it is strong and stiff will hold the concrete material and also controls the crack. This study investigates on the use of sawdust as partial replacement for fine aggregates in concrete production. Sawdust was used to replace fine aggregates in Conventional and as well as in Coconut Shell concrete from 0%, 5%, 10% and 20%. M25 grade of concrete was selected and testing is evaluated at age of 3, 7 and 28 days. From the results, increase in percentage of saw-dust in concrete cubes led to corresponding reduction in compressive strength values, and the optimum saw-dust content was obtained at 5% in conventional as well as in coconut shell concrete , coconut fiber was added at the optimum value of sawdust on conventional and coconut shell concrete at 1%,2%,3%,4% and 5%. The better strength was obtained at 2% addition of fiber in coconut shell concrete and at 3% addition in conventional concrete. 

scholarly journals Investigating possibilities for using sea shell on compressive strength properties of concrete

2018 ◽  
Vol 7 (1.8) ◽  
pp. 241
Author(s):  
Kiran Kumar ◽  
Vineetha Anil ◽  
Sara Hamed ◽  
Ruwa Malik
Keyword(s):  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Strength Properties ◽  
Partial Replacement ◽  
Flexural Properties ◽  
Fine Aggregate ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Concrete Materials ◽  
Ordinary Portland Cement Concrete

The reason of this attempt was to demonstrate that seashells can be utilized as a partial replacement for fine aggregate in concrete for enhancing strength properties. Since seashells are widely available everywhere in coastal and seashore areas, and some of the concrete materials cannot be found easily everywhere.  The strategies utilized as a part of this attempt was to replace burnt and crushed seashells with fine aggregate at 10%, 20% and 30% and compare it with each other and the traditional Ordinary Portland Cement concrete regarding mechanical properties following 7 and 28 days. In conclusion, despite the fact that seashells are generally accessible and can be effortlessly gathered from seashore and beach front regions, the process of burning and crushing requires a lot of energy and is tedious. In spite of the fact that the results demonstrated that utilizing 20% seashell to fine aggregate substitution has a somewhat higher in compressive and flexural properties than that of Ordinary Portland Cement concrete.

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