scholarly journals Effect of Lightweight Waste-Based Aggregate on Lightweight Concrete

2019 ◽  
Vol 8 (4) ◽  
pp. 1041-1044
Keyword(s):  
Compressive Strength ◽  
Oil Palm ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Bottom Ash ◽  
Control Sample ◽  
Waste Material ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Coal Bottom Ash

This paper study the effectiveness of waste material from industrial by-product as lightweight self-cured concrete. Waste material involved in this study is coal bottom ash, oil palm boiler clinker and hydrogel from diapers. Coal bottom ash (CBA) used as a fine aggregate replacement whilst oil palm clinker (OPBC) added into the concrete mixture as partial replacement of coarse aggregate in order to produce lightweight concrete. In addition, hydrogel from disposable diapers was acted as selfcuring agent. Different percentage of CBA as the fine aggregate replacement in concrete was used with the constant value of OPBC as coarse aggregate replacement. The result shows that the concrete sample containing 100% replacement of CBA has the lightest density as compared to other samples. In terms of compressive strength, the sample containing 40% replacement of CBA has similar compressive strength to control sample with reduction of the density of 22% when compared to the control sample. It is concluded that the recycling of CBA and OPBC as replacement material in lightweight concrete has good potential and also processing of CBA and OPBC to develop nano-material are the future potential of CBA and OPBC research for energy efficiency building.

scholarly journals THE EFFECT OF CERAMIC WASTE AS COARSE AGGREGATE ON STRENGTH PROPERTIES OF CONCRETE

2017 ◽  
Vol 36 (3) ◽  
pp. 691-696
Author(s):  
EE Ikponmwosa ◽  
SO Ehikhuenmen
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Control Sample ◽  
Strength Properties ◽  
Waste Material ◽  
Partial Replacement ◽  
Replacement Level ◽  
Ceramic Waste ◽  
Curing Age

This paper reports the findings on an experimental investigation of the effect of partial replacement of coarse aggregate with ceramic waste on strength properties of concrete. Compressive strength tests were conducted using 150x150x150mm cube specimens, while tensile strength was investigated using 150x300mm cylinder specimens. Results of tests show that workability, density, compressive and flexural strength of concrete decreased with increase in ceramic waste content. The compressive strength at 90 days curing age for the control sample was 24.67 N/mm2. Compressive strength values at 90 days curing age for  25%, 50% and 75% replacement levels were 21.78 N/mm2, 19.85 N/mm2and 17.85 N/mm2 respectively. The decrease in density and strength was due to ceramic waste being lighter and more porous than normal coarse aggregate. Tensile strength of concrete with ceramic waste decline gradually from 8.39 N/mm2 to 6.13 N/mm2 for the control and 75% replacement samples respectively. This could be attributed to the water absorption capacity and external porcelain nature of the waste material. A production cost savings of 10.7% for 1:2:4 concrete mix was noted at 75% replacement level. This study concludes that ceramic waste could be used for both structural and non-structural works and recommends that beyond 75% replacement level, ceramic waste material should not be used in concrete structures where strength is the major consideration. http://dx.doi.org/10.4314/njt.v36i3.5

scholarly journals Influence of Ash and Coconut Shell Against Compressive Strength and Permeability Characteristics of Pervious Concrete

2021 ◽  
Vol 12 (3) ◽  
pp. 4129-4138
Author(s):  
Suwendy Arifin Et.al
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Waste Material ◽  
Pervious Concrete ◽  
Coconut Shell ◽  
Fine Aggregate ◽  
Permeability Characteristics ◽  
Fine Aggregates ◽  
Reduced Density

Pervious concrete or non-fine concrete is a simple form of lightweight concrete made by eliminating the use of fine aggregates. As a result of not using fine aggregate in pervious concrete, then created a cavity filled with air and water can be passed. This cavity resulted in reduced density of the concrete as well as the reduced amount of area that needs to be covered by cement paste, thereby reducing the compressive strength. To increase the compressive strength of pervious concrete, in this study will utilize waste material. The waste material is the cocnut shell ash and coconut shell to strengthen the coarse aggregate bonds, so it is expected to increase the compressive strength along with the increase in permeability. Thus, in this study will replace part of the coarse aggregate with coconut shell with percentage 0%, 2,5%, 5%, 7,5%, 10% and partially replace cement with coconut shell ash with percentage 0%, 2,5%, 5%, 7,5%

scholarly journals EFFECT OF CRUSHED DOUM PALM SHELL AS PARTIAL REPLACEMENT OF COARSE AGGREGATE IN CONCRETE

2021 ◽  
Vol 4 (4) ◽  
pp. 1-9
Author(s):  
A. Z. Liman ◽  
T. Adagba ◽  
H. A. Umar
Keyword(s):  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Low Cost ◽  
Construction Material ◽  
Control Sample ◽  
Test Sample ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Palm Shell ◽  
Concrete Production

The use of alternative materials in place of natural aggregate in concrete production has been getting attention all around the globe; this makes concrete a sustainable and environmentally friendly construction material. In this study the use of crushed doum palm shell (CDPS) as partial replacement for coarse aggregate in concrete production was investigated. The concrete grade 30 was used for the research with a water /cement ratio of 0.45. The control sample contained normal concrete ingredient cement, fine aggregate and coarse aggregate. The CDPS replacement by weight was varied at 5%, 10%, 15%, 20%, and 25% respectively for the test sample. The 28-day compressive strength of the concrete using Doum palm shell aggregate was found to be 28.0 and 20.2 MPa at 5 and 10% replacement under full water curing and it satisfies the requirement for structural lightweight concrete which was more than 17MPa. The study recommended replacement of coarse aggregate up to a maximum of 10 % crushed doum palm shell for structural light weight concrete and it encourage the use of agricultural wastes in construction as an environmental protection and cost reduction measure. However, results from laboratory investigations indicated that crushed doum palm shell (CDPS) has good potential as a coarse aggregate for production of structural lightweight concrete, especially for low-cost housing and also for use in earthquake prone areas.

scholarly journals Use of Recycled Tyre Rubber in Non-structural Concrete

2018 ◽  
Vol 203 ◽  
pp. 06001
Author(s):  
Muhammad Bilal Waris ◽  
Hussain Najwani ◽  
Khalifa Al-Jabri ◽  
Abdullah Al-Saidy
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Coarse Aggregate ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Structural Concrete ◽  
Cement Ratio ◽  
Mix Proportion ◽  
Water To Cement Ratio ◽  
Concrete Blocks

To manage tyre waste and conserve natural aggregate resource, this research investigates the use of waste tyre rubber as partial replacement of fine aggregates in non-structural concrete. The research used Taguchi method to study the influence of mix proportion, water-to-cement ratio and tyre rubber replacement percentage on concrete. Nine mixes were prepared with mix proportion of 1:2:4, 1:5:4 and 1:2.5:3; water-to-cement ratio of 0.25, 0.35 and 0.40 and rubber to fine aggregate replacement of 20%, 30% and 40%. Compressive strength and water absorption tests were carried out on 100 mm cubes. Compressive strength was directly proportional to the amount of coarse aggregate in the mix. Water-to-cement ratio increased the strength within the range used in the study. Strength was found to be more sensitive to the overall rubber content than the replacement ratio. Seven out of the nine mixes satisfied the minimum strength requirement for concrete blocks set by ASTM. Water absorption and density for all mixes satisfied the limits applicable for concrete blocks. The study indicates that mix proportions with fine to coarse aggregate ratio of less than 1.0 and w/c ratio around 0.40 can be used with tyre rubber replacements of up to 30 % to satisfy requirements for non-structural concrete.

scholarly journals Coal Bottom Ash as Partial Replacement of Fine Aggregate in Asphaltic Concrete

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
H. Mohammed
Keyword(s):  
Fixed Bed ◽  
Bottom Ash ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Asphaltic Concrete ◽  
Air Voids ◽  
Coal Bottom Ash ◽  
Asphalt Mix ◽  
Materials Used ◽  
Marshall Stability

The effect of coal bottom ash (CBA) on the characteristics of asphaltic concrete was investigated with a view to assess its suitability as a partial replacement of fine aggregate. Coal procured from Lafia-Obi coal mines was burnt in a fixed bed combustor until a sand size residual was produced. The properties of the materials used for the study were characterize using standard procedures. The CBA was introduced in the asphalt mix at an increasing rate of 10, 15, 20 and 25% content by weight of the fine aggregate and test samples of asphaltic concrete were prepared. The samples were subjected to Marshall stability test. Results showed that the specific gravity and absorption test for granite dust were 2.45 and 0.25%, respectively, while those of the CBA were 2.86 and 0.58% respectively. The result of stability, flow, bulk density, voids filled in bitumen (VFB), air voids (VA) and voids in mineral aggregate (VMA) of the asphaltic concrete at 0% CBA were 12.02 kN, 3.04 mm, 2.491g/cm3, 66.0%, 4.3%, 12.7% respectively; while the values at 20% CBA content were 16.97 kN, 3.51mm, 2.514g/ cm3 , 71.2%, 3.4%, 11.9% respectively. The result showed that coal bottom ash in asphaltic mix improved its properties.

scholarly journals Mechanical Behaviour on Replacement of Aggregate by E-waste in Concrete

2019 ◽  
Vol 9 (2) ◽  
pp. 302-305 ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Mechanical Behaviour ◽  
Coarse Aggregate ◽  
Environmental Problems ◽  
Waste Utilization ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Construction Work ◽  
Split Tensile Strength

Concrete is a widely used material in all construction work. The aim of the project is to study the behavior of concrete with replacement of E waste. The fine aggregate and coarse aggregate are naturally available due to increase in demand it is over exploited. The waste utilization is sustainable solution to environmental problems Waste from electric and electronic equipment is used as an E waste replacement for coarse aggregate in concrete which is used in the construction .Therefore the effects have been made to study the use of E waste components as a partial replacement of coarse aggregate in 5%, 10% and 15%. To determine the optimum percentage of E waste that can be replaced for coarse aggregate the compressive strength and split tensile strength of concrete to be studied. After determining the optimum percentage of E waste that can be replaced with coarse aggregate. The comparison of the conventional and optimum percentage of E waste replaced with concrete has been done

scholarly journals Study of Light Weight Fibre Reinforced Concrete by Partial Replacement of Coarse Aggregate with Pumice Stone

2021 ◽  
Vol 9 (9) ◽  
pp. 933-940
Author(s):  
Mohammed Sohel Ahmed
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Light Weight ◽  
Structural Members ◽  
Conventional Concrete ◽  
Shrinkage Cracking ◽  
Pumice Stone ◽  
Average Compressive Strength

Abstract: As the demand for the structural members application in the concrete industry is continuously increasing simultaneously many a times it is required to lower the density of concrete enabling light weight which helps in easy handling of the concrete and its members. In this research an experimental endeavour has been made to equate conventional concrete with light weight by partially substituting the coarse aggregate with the pumice stone aggregate in M30 grade mix design. Simultaneously small fibres of Recron3's Polypropylene have been applied to the concrete as a reinforcing medium to minimize shrinkage cracking and improve tensile properties. The coarse aggregate was substituted by the pumice aggregate in 10, 20, 30, 40, and 50 percent and fibres respectively in 0.5, 1, 1.5, 2 and 2.5 percent. The experiment is focused on strength parameters to determine the most favourable optimum percent with respect to conventional concrete. Keywords: OPC (Ordinary Portland Cement)1, FA (Fine Aggregate)2, CA (Coarse Aggregate) 3, fck (Characteristic Compressive Strength at 28days)4, Sp. Gr (Specific Gravity)5, WC (Water Content)6, W/C (Water Cement Ratio)7, S (Standard Deviation)8, Fck (Target Average Compressive Strength at 28days)9.

scholarly journals Experimental Study on Light Weight Concrete Using Coconut Shell and Fly Ash

2022 ◽  
Vol 10 (1) ◽  
pp. 752-758
Author(s):  
Barkha Verma
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Fresh Concrete ◽  
Industrial Wastes ◽  
Coconut Shell ◽  
Fine Aggregate ◽  
Concrete Production ◽  
Coconut Shells

Abstract: Aggregates provide volume at low cost, comprising 66% to 78% of the concrete. With increasing concern over the excessive exploitation of natural and quality aggregates, the aggregate produced from industrial wastes and agricultural wastes is the viable new source for building material. This study was carried out to determine the possibilities of using coconut shells as aggregate in concrete. Utilizing coconut shells as aggregate in concrete production not only solves the problem of disposing of this solid waste but also helps conserve natural resources. In this paper, the physical properties of crushed coconut shell aggregate were presented. The fresh concrete properties such as the density and slump and 28 days compressive strength of lightweight concrete made with coconut shell as coarse aggregate were also presented. The findings indicate that water absorption of the coconut shell aggregate was high about 24% but crushing value and impact value were comparable to that of other lightweight aggregates. The average fresh concrete density and 28days cube compressive strength of the concrete using coconut shell aggregate 1975kg/m3 and 19.1 N/mm2 respectively. It is concluded that crushed coconut shell is suitable when it is used as a substitute for conventional aggregates in lightweight concrete production. Keywords: Coarse Aggregate, Cement, Concrete, Fly Ash, Coconut shell Aggregate, Water, Compressive Strength, Workability, Fine Aggregate.

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