scholarly journals Early Age Physical Properties of Porous Concrete Containing Slag Nickel Aggregate under Compression

2021 ◽  
Vol 921 (1) ◽  
pp. 012087
Author(s):  
AF Irfansyah ◽  
MW Tjaronge ◽  
AA Amiruddin
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fresh Concrete ◽  
Poisson Ratio ◽  
Mix Design ◽  
Crushed Stone ◽  
Machine Method ◽  
Porous Concrete ◽  
Water Factor ◽  
Porosity And Permeability

Abstract The scope of this research is to make hollow concrete using Nickel Slag and compare it with crushed stone aggregate. The purpose of this study was to determine the amount of workability, porosity, permeability, and tensile strength of porous concrete, and to determine the effect of the 05-10 and 10-20 grading of the aggregate on the tensile strength, porosity and permeability of porous concrete. This study used an experimental method using aggregates with uniform gradations. The aggregates used are nickel slag and crushed stone with uniform gradations of 05-10 and 10-20. The cement water factor (FAS) used in the mix design is 0.35 and the cavity in the concrete is 20%. Workability testing is carried out after the fresh concrete is finished. mixed with the composition according to the mix design. Tensile strength test, with the compressive strength machine method performed at the age of the concrete 3 and 7 days. From the analysis with qualitative methods, porous concrete containing nickel slag and crushed stone in gradations 5 - 10 and 10 - 20 obtained the highest compressive strength values in the nickel slag aggregate mixture 5-10 and 10-20 of 10.70Average - average 10.51 MPa, Modulus of elasticity of 6316.43 average 6054.68 MPa, and Poisson Ratio of 0.1651 Average 0.1598.

scholarly journals CONCRETO PRODUZIDO COM AGREGADO GRAÚDO LATERÍTICO EM SANTARÉM, PARÁ

2020 ◽  
Vol 16 (1) ◽  
pp. 60-77
Author(s):  
Antonio Rodrigues Pantoja Junior ◽  
Marcelo Picanço
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Modulus Of Elasticity ◽  
Crushed Stone ◽  
Natural State ◽  
Fine Aggregates ◽  
Alternative Material ◽  
Substitution Content ◽  
Dosing Method ◽  
Cylindrical Test

RESUMO: Avaliou-se a substituição da brita basáltica existente no concreto por material alternativo em abundância no município de Santarém-PA: a laterita. Foi avaliado o desempenho do concreto incorporado com agregado laterítico in natura em substituição parcial ao agregado graúdo de brita basáltica nos teores de 20% e 50%. Realizou-se a caracterização dos agregados graúdo e miúdo. De acordo com o método da ABCP, determinou-se o traço de referência em massa 1:1,71:3,03:0,53; confeccionou-se corpos-de-prova cilíndricos 10x20 cm utilizando 3 traços diferentes, de modo a substituir a brita basáltica pelo agregado laterítico, em 20% e 50%. Para cada traço foram quantificados a sua consistência, por meio do ensaio de abatimento do tronco de cone, resistência à compressão axial, resistência à tração por compressão diametral e módulo de elasticidade aos 28 dias. A substituição do agregado convencional de brita basáltica por agregado laterítico em seu estado natural promoveu diminuição da resistência a compressão simples, da resistência à tração por compressão diametral e do módulo de elasticidade com a inclusão do agregado laterítico na mistura. Destaca-se que acima de determinado teor de substituição o concreto torna-se inviável devido a necessidade de adicionar aditivo plastificante para manter a consistência desejada e que as duas misturas incorporadas com agregado laterítico se mostraram muito semelhantes após os 28 dias, no que tange a ganhos de resistência a compressão. ABSTRACT: This study is about the replacement of basaltic origin crushed stone by alternative material present in the municipality of Santarém, Pará State: the laterite. The aim were to evaluate the performance of concrete incorporated with natural lateritic aggregate, replacing the of crushed stone in 20% and 50%. The first stage was characterizing the coarse and fine aggregates that made up the studied concrete. According to ABCP dosing method it was determined the mass reference trait 1: 1.71: 3.03: 0.53; bodies of 10x20 cm were made for cylindrical test, using three different strokes so that the basaltic crushed stone gradually replaced by the lateritic aggregate in proportions of 20% and 50%. For each trait its consistency was quantified by means of the tapering test, axial compression strength, diametric compression tensile strength and the modulus of elasticity at 28 days. Was observed that the replacement of the conventional aggregate basalt crushed stone for aggregate of laterite in natural state promoted a decrease in the value of simple compressive strength, diametric tensile strength and modulus of elasticity with inclusion of a larger amount of lateritic aggregate in the mixture. It is noteworthy that above a certain substitution content, the concrete becomes not feasible due to the need for a large increase in the amount of plasticizer additive to the desired consistency is maintained and the two blends incorporated with lateritic showed very similar after 28 days in terms of gains in compressive strength.

scholarly journals Effect of Tile Powder Used as a Cementitious Material on the Mechanical Properties of Concrete

2019 ◽  
Vol 9 (5) ◽  
pp. 4596-4599 ◽  
Author(s):  
N. Bheel ◽  
R. A. Abbasi ◽  
S. Sohu ◽  
S. A. Abbasi ◽  
A. W. Abro ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fresh Concrete ◽  
Cementitious Material ◽  
Splitting Tensile Strength ◽  
Hardened Concrete ◽  
Compressive Strength Of Concrete ◽  
Powder Content ◽  
Cylindrical Samples

This study was undertaken to reduce the usage of cement in concrete where different proportions of tile powder as cement replacement were used. Since in the manufacture of cement an exuberant amount of carbon dioxide is disposed of in the environment, this research aims to curtail the dependence on cement and its production. The objective of this work is to investigate the properties of fresh mix concrete (workability) and hardened concrete (compressive and splitting tensile strength) in concrete with different proportions of 0%, 10%, 20%, 30%, and 40% of tile powder as a cement substitute. In this study, a total of 90 concrete samples were cast with mix proportions of 1:1.5:3, 0.5 water-cement ratio, cured for 7, 14 and 28 days. For determining the compressive strength, cubical samples, with dimensions of 100mm×100mm×100mm, were cast, while for the determination of the splitting tensile strength, cylindrical samples with dimensions of 200mm diameter and 100mm height, were tested after 7, 14, and 28 days. The highest compressive strength of concrete achieved for tile powder concrete was 7.50% at 10% replacement after 28days of curing. The splitting tensile strength got to 10.2% when concrete was replaced with 10% of tile powder and cured for 28 days. It was also shown that with increasing percentage of the tile powder content, the workability of the fresh concrete increases.

scholarly journals KARAKTERISTIK SELF COMPACTING CONCRETE (SCC) TANPA CURING

2018 ◽  
Author(s):  
erniati
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Fresh Concrete ◽  
Strength Test ◽  
Splitting Tensile Strength ◽  
Good Resistance ◽  
Self Compacting Concrete ◽  
Compressive Strength Test ◽  
Resistance Durability

Self Compacting Concrete (SCC) is one solution to get concrete construction which it has good resistance. Durability of concrete was obtained by the good concrete compaction to be done by a skilled workforce. However, one of the negligence that often occur in the field ie after casting they was ignoring curing of the hardening concrete. This study discusses the workability of fresh concrete and mechanical properties (compressive strength and splitting tensile strength) on SCC without curing. Testing of the concrete workability based on EFNARC standard. The mechanical properties test based on ASTM standards. The method Compressive strength test based on ASTM standards 39 / C 39M - 12a, whereas splitting tensile strength accordance standard ASTM C496 / C496M-11. The results of the study indicate that the SCC without curing effect on the reduction in compressive strength at ages 1, 3, 7, 28, and 90 days in a row at 4.11 MPa (16.1%); 4.90 MPa (13.9%); 6.64 MPa (13.1%); and 6, 72 MPa (12.75%). Splitting tensile strength decreased respectively by 0.1 MPa (3.25%); 0.26 MPa (7.99%); 0.4 MPa (9.52%); and 0.39 MPa (9.16%).

scholarly journals Study of the Influence of an Air-Entraining Agent on the Rheology of Motars

2018 ◽  
Vol 149 ◽  
pp. 01054
Author(s):  
Nadia Tebbal ◽  
Zine El Abidine Rahmouni ◽  
Lamis Rabiaa Chadi
Keyword(s):  
Compressive Strength ◽  
Rheological Properties ◽  
Fresh Concrete ◽  
Experimental Studies ◽  
Air Entrainment ◽  
Mix Design ◽  
Hardened Concrete ◽  
Concrete Mix Design ◽  
Concrete Mix ◽  
Mixing Water

The objective of this study is to analyze the effect of the air entrainment on the fresh rheological properties as well as on the compressive mechanical resistances of the mortars. The hardened concrete contains a certain amount of randomly spread air, coming either from a drive during kneading or from the evaporation of the mixing water. The air quantity is in the order of 20 l / m3, ie 2% of the volume. However, the presence of a large volume of air bubbles causes the mechanical resistances to fall in compression. On the other hand, the use of air entrainment could improve the rheological properties of fresh concrete. Experimental studies have been carried out to study the effect of air entrainment on compressive strength, density and ingredients of fresh concrete mix. During all the study, water cement ratio (w/c) was maintained constant at 0.5. The results have shown substantial decreasing in water and mortar density followed with decreasing in compressive strength of mortar. The results of this study has given more promising to use it as a guide for mortar mix design to choose the most appropriate concrete mix design economically.

scholarly journals TINJAUAN KUAT TEKAN BETON DENGAN MENGGUNAKAN SERAT BENDRAT SEBAGAI BAHAN TAMBAH

2019 ◽  
Vol 1 (2) ◽  
pp. 124-132
Author(s):  
Hermansyah ◽  
Moh Ihsan Sibgotuloh
Keyword(s):  
Compressive Strength ◽  
Fresh Concrete ◽  
Mix Design ◽  
Test Results ◽  
Concrete Compressive Strength ◽  
Normal Concrete ◽  
Fiber Concrete ◽  
Concrete Mix ◽  
Materials Used ◽  
Average Compressive Strength

The more widespread use of concrete construction and the increasing scale of construction, the higher the demand for materials used in concrete mixes. One of the innovations of concrete is fiber concrete. Hope the addition of fiber in concrete mixes such as wire fiber to increase the compressive strength value of normal concrete that is often used, so the purpose of this study is to determine the effect of adding wire fiber to the ease of working (workability) of the concrete mixture and to determine the effect of adding wire fiber to concrete compressive strength. In this study, the fiber used is the type of wire fiber with a diameter of 1 mm and a length of 60 mm. Fiber variations used are 0%, 0.4%, 0.6% and 0.8% based on the weight of fresh concrete. Concrete mix (mix design) using SNI 03-2834-2000 about concrete mix planning with a test life of 28 days. The test results showed that the lowest average compressive strength of 12,291 MPa occurred at 0% variation and the highest average compressive strength value of 20,656 MPa at 0.8% fiber variation. The increase is caused by the even distribution of fibers in the concrete produced, the higher the variation that is given by the fiber, the better the fiber spread, from these fibers provide a fairly good contribution to the fiber concrete

scholarly journals Studi Eksperimental Beton Mutu Tinggi Dengan Agregat Batok Kelapa Dan Terak Baja

2021 ◽  
Vol 3 (3) ◽  
pp. 448-458
Author(s):  
Anisa Tikupadang ◽  
Herman Parung ◽  
Benny Kusuma
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Modulus Of Elasticity ◽  
Steel Slag ◽  
Coconut Shell ◽  
Crushed Stone ◽  
Split Tensile Strength ◽  
Increasing Demand ◽  
Coconut Shells

Steel slag is a waste from the steel smelting industry. Along with the increasing demand for steel, it can also cause steel waste to increase. Coconut shell is a solid waste from the rest of coconut processing. This study aims to obtain the compressive strength, split tensile strength, flexural strength, and modulus of elasticity with coarse aggregate substituted for steel slag and coconut shell, with a concrete quality of f'c 45 MPa. The results of this study that the compressive strength of concrete obtained, 100% crushed stone aggregate increased 5.213% and coconut shell substitution and steel slag increased 1.650%. The value of the split tensile strength of concrete, 100% crushed stone is 9.312% and the substitution of coconut shells and steel slag is 9.073 of the compressive strength. The value of flexural strength, 100% crushed stone is 0.827√(f'c) and the substitution of coconut shell and steel slag is 0.752 f'c from the compressive strength. The modulus of elasticity of concrete, 100% crushed stone is 24845,351 MPa and substitution of coconut shells and steel slag is 20674,005 MPa.    

scholarly journals Geopolymer Concrete: A Sustainable and Economic Concrete via Experimental Analysis

2021 ◽  
Author(s):  
Manvendra verma ◽  
Nirendra Dev
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Poisson Ratio ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Embodied Energy ◽  
Mix Design ◽  
Geopolymer Concrete ◽  
Concrete Mix ◽  
The Cost

Abstract Geopolymer concrete is a sustainable, economical, eco-friendly, and high-strength concrete. The GPC utilizes industrial solid wastes like flyash and slag as binding material and is activated by the alkaline solution containing NaOH and Na2SiO3 in the design mix. The experimental investigation analyzes both GPC and OPC concrete's physical and mechanical properties for the same mix design and analyzes the concretes cost and sustainability. After the experimental investigation, the GPC and OPC concrete's compressive strength shows similar trends at the 28 days strength, but the initial three days strength of the GPC strength is much higher than the OPC concrete, but around 28 days, the compressive strength of concrete mix got similar. The splitting tensile strength and flexural strength of the GPC specimens are slightly higher than the OPC concrete mix specimens. The OPC concrete's elastic modulus is slightly higher than the GPC mix design, whereas the Poisson ratio of the OPC concrete is slightly lower than the GPC mix designs. The GPC has less embodied energy compared to the OPC concrete. The cost of the GPC at a bulk level reduced the cost of up to 40% of the OPC concrete.

scholarly journals Behaviour of concrete by using artificial aggregates a review

2018 ◽  
Vol 7 (2.21) ◽  
pp. 255 ◽  
Author(s):  
K Manju ◽  
B Dhanush Kumar ◽  
S Suresh Kumar ◽  
S Nirmal Kumar
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Mix Design ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Basic Properties ◽  
Durability Properties ◽  
Natural Aggregate ◽  
Environmental Friendly ◽  
Steel Industries

Natural aggregate is not an environmental friendly material due to its destructive resource consuming nature. GGBS is a byproduct of steel industries, whereas GGBFS mixed with cement of 1:2 ratio making an artificial aggregate, whereas hardening powder used to spray made upon artificial aggregate to develop the strength of concrete. The basic properties of natural and artificial aggregates were determined. The mix design to be determined obtained for conventional concrete of control mix of grade M 25. The different mix proportions were prepared by replacement of 20, 40, 60, 80, 100 of natural aggregate instead of artificial aggregate. To check the compressive strength, split tensile strength determine. Based on the result we choose optimum percentage of aggregate and make it and concrete to determine the durability properties of concrete compared with natural aggregate.  

Effects of Granite Sourced from Selected Locations in Ogbomoso, Nigeria on the Properties of Concrete

2021 ◽  
Vol 107 ◽  
pp. 113-121
Author(s):  
Akeem Ayinde Raheem ◽  
Bolanle Deborah Ikotun ◽  
S. Oyetunde Akinloye
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fresh Concrete ◽  
Hardened Concrete ◽  
Sieve Analysis ◽  
High Quality ◽  
Compaction Factor ◽  
Hardened Properties ◽  
Aggregate Impact Value ◽  
Improved Characteristics

Aggregates constitute 60 – 80% of total concrete constituents. The characteristics of concrete may be affected by the sources from which the aggregate was obtained. The effects of granite sourced from four selected locations within Ogbomoso, Nigeria; on the fresh and hardened properties of concrete were investigated. The granites were obtained from: Asafa (80 4.681 N and 40 20.781 E), Ola-jesu (80 13.591 N and 40 10.11 E), Igbo-ile (80 4.681 N and 40 19.571 E) and Apasu (80 14.961 N and 40 10.051 E). Sieve analysis, specific gravity, moisture content, Aggregate Crushing Value (ACV) and Aggregate Impact Value (AIV) of the granites were determined. The aggregates were used to produce concrete of two different mix ratio-1:2:4 and 1:3:6. Slump and compaction factor tests were carried out on fresh concrete and compressive strength, splitting tensile strength and water absorption on hardened concrete. The results indicated that granite obtained from Asafa and Ola-jesu exhibited improved characteristics over those sourced from Igbo-ile and Apasu and are more suitable for use in producing high-quality concrete.

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