STUDY ON THE BEHAVIOUR OF FLY ASH BASED GEO POLYMER CONCRETE WITH 20MOLAR NAOH ACTIVATOR

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<ul><li><p>http://www.iaeme.com/IJCIET/index.</p><p>International Journal of Civil Engineering and Technology (IJCIET)Volume 8, Issue 1, January 2017, pp. </p><p>Available online at http://www.iaeme.com/IJCIET</p><p>ISSN Print: 0976-6308 and ISSN Online: 0976</p><p> IAEME Publication Scopus </p><p>STUDY ON THE BEHAVIO</p><p>GEO POLYMER CONCRETE</p><p>PG Student, Civil Engineering Department, </p><p>Associate Professor, Civil Engineering Department, </p><p>ABSTRACT </p><p>Background/Objectives: Green house gas emissions are the main problem in the present </p><p>scenario. The amount of Green house gas emissions are increasing and CO</p><p>gas which effects the environment and leads to global warming. </p><p>paper deals with the alternate materials for the</p><p>CONCRETE) and it reduces the emission of</p><p>is converted into useful material. This Geo polymer concrete is a mixture of</p><p>like sodium silicate and its hydrox</p><p>fly ash. Findings: The strength of geo polymer concrete is increased with molarity of NaOH.</p><p>20 molarity is used in this paper. The reaction of alumina, silica present in flyash with alkal</p><p>results in aluminosilicate which acts as a binder useful in high quality of green concret.</p><p>paper different tests are conducted to find properties</p><p>as well as compressive) for 3, </p><p>in gaining knowledge about the morophological composition of concrete which might result in </p><p>path-breaking trends in construction industry. </p><p>Key words: Fly Ash, Geo Polymer Concre</p><p>Cite this Article: T.Narendra and N.Srujana, Study On The Behaviour of Fly Ash Based Geo </p><p>Polymer Concrete with 20molar Naoh Activator</p><p>Technology, 8(1), 2017, pp. 826</p><p>http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&amp;VType=8&amp;IType=1</p><p>1. INTRODUCTION </p><p>Now a days content of CO2 is increasing drastically in earths atmosphere</p><p>directly or indirectly emit more amount</p><p>couldnt digest, in which our ordinary Portland</p><p>In order to protect the environment, which to be done at great magnitude, necessity for</p><p>IJCIET/index.asp 826 </p><p>International Journal of Civil Engineering and Technology (IJCIET) , pp. 826833, Article ID: IJCIET_08_01_097 </p><p>http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&amp;VType=8&amp;IType=</p><p>6308 and ISSN Online: 0976-6316 </p><p>Scopus Indexed </p><p>STUDY ON THE BEHAVIOUR OF FLY ASH BASED </p><p>GEO POLYMER CONCRETE WITH 20MOLAR NAOH </p><p>ACTIVATOR </p><p>T.NARENDRA </p><p>PG Student, Civil Engineering Department, </p><p>K L University, A. P, India </p><p>N.SRUJANA </p><p>Associate Professor, Civil Engineering Department, </p><p>K L University, A. P, India </p><p>Green house gas emissions are the main problem in the present </p><p>Green house gas emissions are increasing and CO</p><p>gas which effects the environment and leads to global warming. Methods/Statistical Analysis:</p><p>paper deals with the alternate materials for the cement which is a green concrete (GEOPOLYMER </p><p>CONCRETE) and it reduces the emission of CO2. Fly ash is a byproduct of thermal industry which </p><p>is converted into useful material. This Geo polymer concrete is a mixture of</p><p>like sodium silicate and its hydroxide form along with other products like metakolin in addition to</p><p>The strength of geo polymer concrete is increased with molarity of NaOH.</p><p>molarity is used in this paper. The reaction of alumina, silica present in flyash with alkal</p><p>results in aluminosilicate which acts as a binder useful in high quality of green concret.</p><p>paper different tests are conducted to find properties which include strength (flexural,</p><p> 7and 28 days for 20M. Applications/Improvements:</p><p>in gaining knowledge about the morophological composition of concrete which might result in </p><p>breaking trends in construction industry. </p><p>Geo Polymer Concrete, Molarity, Alkaline Solution, </p><p>T.Narendra and N.Srujana, Study On The Behaviour of Fly Ash Based Geo </p><p>Polymer Concrete with 20molar Naoh Activator . International Journal of Civil Engineering and </p><p>826833. </p><p>http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&amp;VType=8&amp;IType=1</p><p>is increasing drastically in earths atmosphere. There are many products which </p><p>directly or indirectly emit more amount of CO2 than permissible limit or amount which the atmosphere </p><p>ordinary Portland cement (OPC) fall at higher rank in construction industry. </p><p>In order to protect the environment, which to be done at great magnitude, necessity for</p><p>editor@iaeme.com </p><p>&amp;IType=1 </p><p>UR OF FLY ASH BASED </p><p>WITH 20MOLAR NAOH </p><p>Associate Professor, Civil Engineering Department, </p><p>Green house gas emissions are the main problem in the present </p><p>Green house gas emissions are increasing and CO2 one of the greenhouse </p><p>Methods/Statistical Analysis: This </p><p>a green concrete (GEOPOLYMER </p><p>. Fly ash is a byproduct of thermal industry which </p><p>is converted into useful material. This Geo polymer concrete is a mixture of various components </p><p>ide form along with other products like metakolin in addition to </p><p>The strength of geo polymer concrete is increased with molarity of NaOH. The </p><p>molarity is used in this paper. The reaction of alumina, silica present in flyash with alkalin base </p><p>results in aluminosilicate which acts as a binder useful in high quality of green concret. In this </p><p>which include strength (flexural, split tensile </p><p>Applications/Improvements: This study helps </p><p>in gaining knowledge about the morophological composition of concrete which might result in </p><p>Ambient Curing </p><p>T.Narendra and N.Srujana, Study On The Behaviour of Fly Ash Based Geo </p><p>International Journal of Civil Engineering and </p><p>http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&amp;VType=8&amp;IType=1 </p><p>There are many products which </p><p>than permissible limit or amount which the atmosphere </p><p>(OPC) fall at higher rank in construction industry. </p><p>In order to protect the environment, which to be done at great magnitude, necessity for alternative </p></li><li><p>Study On The Behaviour of Fly Ash Based Geo Polymer Concrete with 20molar Naoh Activator </p><p>http://www.iaeme.com/IJCIET/index.asp 827 editor@iaeme.com </p><p>materials to be introduced, which is environment friendly and economical aroused in front of researchers, </p><p>one of the alternative materials is geo-polymer concrete, which can replace general or ordinary concrete </p><p>and is environmentally friendly product. Not only to reduce the CO2, but also increase the compressive </p><p>strength than OPC and uses the byproduct, which in turns helps in effective disposal. </p><p>The accretion appeal for the ecology affable architecture is the reason acceptable architecture material </p><p>development. The various issues like ambient conditions, hand to mouth living conditions along with </p><p>surrounding ecological conditions are the spoil sport which can hamper the development. The major GHC </p><p>promoting product and activity arresting in nature. The allergory to Portland cement coupled with low </p><p>GHC emission is possible with Geo-polymers. Geo-polymers as well display above engineering backdrop </p><p>when chosen between the counterparts. Attrition to factors like reaction with sulphate, bases, etc can be </p><p>resisted using green concrete with reduced levels of calcium content1-7</p><p>. </p><p>Sustainability is the need of the hour and it is the major driving factor in case of architecture and </p><p>construction based firms which is often combined with economic feasibility factor also in case of </p><p>manufacturing of construction materials. Based on the user specification constraint including commercial </p><p>and ecological aspects, the performance of the manufacturing item is determined. In general, it is to be </p><p>noted that that it increases the content of carbon dioxide content in the atmosphere and most complex </p><p>method of its production is also witnessed among the counterparts. </p><p>Green concrete is need of the hour which is far better than the manufacturing materials of the similar </p><p>kind. Green concrete with low content of calcium tend to possess high quality of strength and resistance of </p><p>external environmental constraints and compounds8-16</p><p>. </p><p>The term geo-polymer was introduced by Davidovits in 1978.Geopolymer is an industrial by product </p><p>like flyash, bagasseash, Low calcium flyash(CLASS F) was used.The curing process of Geo-polymer </p><p>concrete plays a vital role in physical properties of hardened concrete. It can be done by ambient and oven </p><p>curing process. In oven curing process external heat is supplied, but in practical conditions providing the </p><p>entire structure external heating source is a difficult task and which is not possible17-20</p><p>. </p><p>Despite the fact that OPC is in extensive usage in construction and architecture industry for ages, it </p><p>releases green-house gases into the atmosphere at the time of manufacturing. Geopolymer concrete is the </p><p>recent technology used to reduce OPC. </p><p>Fly ash reacts with acrid solutions to anatomy a cementitious material; fly ash based geopolymer does </p><p>not afford carbon dioxide. In this work, pond ash is advised as fractional backup for beach as accomplished </p><p>accumulated in the geopolymer concrete. Fly ash and pond ash are residues from agitation of coal. Hence </p><p>in this paper we studied and found a method, where ambient curing is also as such effective as oven curing. </p><p>This paper summarizes the behaviour of fly ash based Geo-polymer concrete with the specified molarity of </p><p>NaOH activator5-16</p><p>. </p><p>Palomo ,Grutzeck and Blanco1 investigated the acrid activation of decay materials. has become an </p><p>important breadth of analysis in abounding laboratories because it is accessible to use these abstracts to </p><p>amalgamate bargain and ecologically complete adhesive like architecture materials. In the present paper, </p><p>the apparatus of activation of a fly ash (no added solid actual was used) with awful acrid solutions is </p><p>described. These solutions, fabricated with NaOH, KOH, baptize glass, etc., the artefact of the </p><p>acknowledgment is an baggy aluminosilicate gel Mechanical strengths with ethics in the 60 MPa ambit </p><p>were acquired afterwards abating the fly ash at 85 C for alone 5 h. </p><p>Anurag, Deepika2 and his advisers advised after-effects of an beginning abstraction on the Green </p><p>concrete characteristics. The composition of sodium hydroxide considered is 16M, 8M and 12M along </p><p>with 72 hours,24 hours and 48 hours abating time respectively. Baptize assimilation, compactness strength </p><p>along with Compressive strength based tests were conducted on various chemical compositions. </p><p>ParthibanShobana3 and his fellows investigate the Chemical Admixture does not show any impact on </p><p>Compressive Strength but shows considerable increase in the workability of the concrete. The Specimens </p><p>have been cured in ambient temperature condition to check the suitability of Geopolymer concrete for cast-</p></li><li><p>T.Narendra and N.Srujana </p><p>http://www.iaeme.com/IJCIET/index.asp 828 editor@iaeme.com </p><p>in-situ conditions. 7 day strength was found to be 70% of its 28 days strength, the 28 days strength is </p><p>higher compared to OPC. </p><p>Ganapati, Adhiseshu4 and his fellows investigate replacement of Fly ash for 5 different GGBS content </p><p>(upto 40%) and 8M NAOH solution and NA2SIO3/NAOH ratio was 2.5 taken and the result indicates that </p><p>high amount of slag is present, the compressive Strength of 31.85 at 3 days achieved. From the paper it is </p><p>aswell assured that the replacement of flyash with green concrete does not disturb its properties such as </p><p>strength or to that matter any significant change in composition. Compressive Strength (upto 90%) was </p><p>accomplished in 14 canicule and the boilerplate body of Geopolymer concrete compared to OPC. </p><p>Partha, Prabir and Pradip5 advised that the GGBS added to (0 to 20%) of absolute binder, cogent access </p><p>in Backbone and some abatement in workability empiric on Geopolymer concrete. The accession of </p><p>GGBFS added ambience of the accurate at ambient temperature. The backbone accretion slowed down </p><p>afterwards the age of 28 canicule and continues to access at a slower amount until 180 days. The delayed </p><p>consequence of admixture variables on the improvement of minimization spine was agnate to that on the </p><p>advancement of compressive quality. </p><p>Supraja and Kantarao6 advised that in adjustment to aftermath GGBS added Geopolymer accurate </p><p>altered Molarities 3M, 5M, 7M and 9M are taken to adapt altered mixes. The Cube Specimens are taken of </p><p>100mm*100mm*100mm.Two altered abating are agitated oven abating at 50C and Direct Sunlight Curing. </p><p>The Result shows that there is no cogent access in backbone of oven convalescent specimens afterwards 3 </p><p>canicule of Geopolymer accurate and the backbone of Geopolymer accurate is accretion with the access of </p><p>the chastity of Sodium Hydroxide. Sunlight abating is added acceptable for applied conditions. </p><p>Madheshwaran, Gnansundar, Gopalkrishnan7 instructed the variation with respect to GGBFS in precise </p><p>has been prompted and Longer subsiding time greater the Polymerization activity and delayed </p><p>consequences in compressive Strength. Higher the Molar Ratio (7 M) with Higher GGBS (100%)results in </p><p>the Higher Compressive Backbone and Split minimization spine .By this compressive Backbone in the </p><p>ambit of 45Mpa to 60 Mpa is expert and Highest is for 100% GGBS. Aside from action seriousness, the </p><p>GPCs advance the mechanized rot for bearing the bounden plan in cement, there are both feel and </p><p>Economical Benefits of Using Fly fiery debris and GGBS. The increase of Naphthalene based Super </p><p>Plasticizer pleasant included than 2% barely decrease the Compressive Strength. </p><p>Ravindra and Somnath8 advised that with the Increase of silica agreeable in flyash, the admeasurement </p><p>of Spherical shaped unreacted fly ash particles in the Geopolymercast advertence accumulation of added </p><p>aluminosilicate gel which after-effects in the added compressive strength. When the silica agreeable above </p><p>4 by (Sio2/Al2o3) leads to abridgement in acuteness and abatement in Backbone while lower baptize </p><p>agreeable in the mix, Higher was the Compressive Strength. Filler Actual like Sand Reduces arise and </p><p>improves the porosity of the Composite and its accession aswell reduces the abundance of Binder adhesive </p><p>authoritative the actual added economical. The Setting time of Geopolymer is aswell best at Higher Silica </p><p>content. </p><p>Pradip and Prabir9 investigated the Fly ash Geopolymer mixtures were designed adding GGBFS upto </p><p>30% of total Binder and curing is at ambient Temperature. By adding 30% GGBFS Compressive Strength </p><p>about 55 Mpa has been achieved.The compactness of the Gel increased when SlagContent is higher in the </p><p>paste. </p><p>MatghewSudhakar and Natarajan10</p><p> investigated that with the increase of GGBS content, Compressive </p><p>Strength is gradually increases .in this Coal Ash and GGBS </p><p>Combination is taken along with 15M Alkaline Solution and total replacement of about 30% is taken </p><p>into consideration and Higher Compressive Strength up to 57Mpa is achieved .However the Cost of GGBS </p><p>added Geopolymer is 7% Higher than OPC but when we Consider Strength aspect, it is almost 3 times than </p><p>OPC at 7 days. </p></li><li><p>Study On The Behaviour of Fly Ash Based Geo Polymer Concrete with 20molar Naoh Activator </p><p>http://www.iaeme.com/IJCIET/index.asp 829 editor@iaeme.com </p><p>2. REQUIRED EXPERIMENTAL COMPONENTS </p><p>The list of manufacturing items along with required materials required to perform the tests are given by </p><p> Metakaolin </p><p> Coarse aggregate </p><p> A...</p></li></ul>

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