The curing time varied from 4 hours to 96 hours 4 days. The durability of geopolymer pastes and concrete is highlighted in terms. Also largescale depletion of these sources creates environmental problems. Recycled plastics as coarse aggregate for structural concrete. Performance of geopolymer concrete under severe environmental. Gujarat, india 2 professor, department of applied mechanics, s v national institute of technology, surat 395007. It is a combination of solutions of alkali silicates and hydroxides, besides distilled water.
After curing process, the concrete specimens were the compressive strength of the geopolymer concrete at the age of 3, 7, 14, 21 and 28 days. B international journal of civil and structural engineering 399 volume 3 issue 2 2012 bakri, 2011. The international journal of concrete structures and materials ijcsm provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete. The type of cement affects the rate of hydration, so that the strengths at early ages can be considerably influenced by the particular cement.
Cement and concrete composites nondestructive testing. Experimental study on geopolymer concrete incorporating ggbs v. Experimental investigation on increasing the strength of. This free online tool allows to combine multiple pdf or image files into a single pdf document. Strength of concrete containing different types of fine aggregate sachin balkrishna kandekar, amol jagannath mehetre, vijayshree a. The manufacture of geopolymer concrete is carried portland cement concrete, in fly ashbased geopolymer concrete, the aggregates occupy the largest volume, i.
This creates substantial garbage every day which is much unhealthy. Our pdf merger allows you to quickly combine multiple pdf files into one single pdf document, in just a few clicks. The characteristics properties of concrete such as workability for fresh concrete, also. By adjusting the mixture to an equivalent density, concrete mixtures containing the. A healthy and sustainable reuse of plastics offers a host of advantages. Currently one of the alternative concrete solution is geopolymer, it is based on flyash or other material pozzolanic such as metakaolin, blast furnace slag, and others. Geopolymer is a material resulting from the reaction of a source material that is rich in silica and alumina with alkaline solution. Environmental impact assessment of post tensioned and. The specimens were prepared according to the method followed by hardjito et. Design of normal strength concrete mixtures with recycled concrete aggregates a. Some of the advantages of geopolymer concrete are its fast setting time, rapid strength development, and its significantly reduced carbon footprint. Strength characteristics of geopolymer concrete containing. Concrete durability properties, concrete tests, concrete construction controland to meet advancements made in concrete technology we should have to use latest technologies and various applications of concrete technologies like use of recycled materials in concrete, high.
Development of low calcium flyash based geopolymer. This project is mainly based on the investigation and increasing the strength characteristics of pervious concrete. This means that if the editor feels your article is more suitable in one of our other participating journals, then you may be asked to consider transferring the article to one of those. The role of portland cement is replaced by low calcium fly ash. In this paper, fly ash is used to produce a geopolymer concrete. Study of the strength geopolymer concrete with alkaline solution of varying molarity international organization of scientific research 20 p a g e to establish the economical, technological and environmental benefits of geopolymer binders over. The mix design is designed considering only cement and coarse aggregate since the concrete is a no fineness concrete. Similarly the geopolymer concrete showed good workability as of the ordinary portland cement concrete. Journal of advanced concrete technology the author guidever. Geopolymer concrete is an innovative construction material which shall be produced by the chemical action of inorganic molecules. While the translucent concrete studied by us is heterogeneous, its transmittance cannot be obtained by equation 1, because the number of pofs in unit area is different at different area, that is, the transmittance in unit is related to the arrangement of. Dec 12, 2016 some of the advantages of geopolymer concrete are its fast setting time, rapid strength development, and its significantly reduced carbon footprint. Due to migration of article submission systems, please check the status of your submitted manuscript in.
Paper pulp from paper industry, marble powder from marble cutting and artistic thing of marble, quarry dust from mining industry are being used in green concrete. Pervious concrete can be used for a number of applications, but its primary use is in road pavement such as in rural areas. Each cube specimen was cast in three layers by compacting manually as well as by using vibrating table as shown in fig. Split pdf files into individual pages, delete or rotate pages, easily merge pdf files together or edit and modify pdf files. Geopolymer by a french professor davidovits in 1978. The fresh geopolymer concrete was used to cast cubes of size 150x150x150mm to determine its compressive strength. Research paper investigation of nofines concrete in.
About 300 kg of pulp waste is produced for each tone of recycled paper 7. Geopolymer is an excellent alternative which transform industrial waste products like ggbs and fly ash into binder for concrete. Some recent applications of geopolymer concrete in the precast construction and. An electroniconly, open access international journal of japan concrete institute. A study on mechanical properties of porous concrete for. Guide for authors cement and concrete research issn. Download guide for authors in pdf aims and scope the aim of cement and concrete research is to publish the best research on cement, cement composites, concrete and other allied materials that incorporate cement. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Replacement of 25 to 30 percent by weight of the cement, whether low or high alkali, appears to be an effective and widely applicable method of ensuring good longterm concrete performance, although the minimum required in any given case may be related to cement composition. The factors that affect the production of geopolymer concrete such as source minerals, workability, curing time, and.
This report will focus on the pavement applications of the concrete, which also has been referred to as porous concrete, permeable concrete, nofines concrete, gapgraded. Combine pdfs in the order you want with the easiest pdf merger available. The aim of cement and concrete research is to publish the best research on cement, cement composites, concrete and other allied materials that. The paper discusses causes in material standards, design specifications, manufacture and construction practice which may contribute to shrinkage cracking of concrete masonry walls. A free and open source software to merge, split, rotate and extract pages from pdf files. A study on mechanical properties of porous concrete for its. Test data of various shortterm and longterm properties of the geopolymer concrete are then presented. Assume density of aggregate as unit weight of concrete table iacsit international journal of engineering and technology, vol. Free online tool to merge pdf files pdfcreator online. This simple webbased tool lets you merge pdf files in batches. Fly ash based geopolymer concrete open access journals. Fly ashbased geopolymer concrete is a new material that does not need the presence of portland cement as a binder. Effect of naoh content on hydration, mineralogy, porosity and strength in alkalisulfateactivated binders from ground granulated blast furnace slag and phosphogypsum. Soda pdf merge tool allows you to combine two or more documents into a single pdf file for free.
For easy working of fresh gpc mixes superplasticizer conplast sp430 was used. In the construction industry mainly the production of portland cement will causes the emission of pollutants results in environmental pollution. Equations for shear design of continuous reinforced concrete haunched beams based on stress fields and truss models. The paper describes the results of the tests conducted on largescale reinforced geopolymer concrete members and illustrates the application of the geopolymer concrete in the construction industry. Environmental impact assessment of post tensioned and reinforced concrete slab construction abstract in australia, approximately 30 million tonnes of finished building products are produced each year, with over 56% of this quantity, by mass, being attributed to concrete and a. The contributing factors for the change in the distribution of concrete strength at the inner surface.
In various states across the country, large aggregate, asphalt concrete, and concrete suppliers and highway construction companies are making numerous small acquisitions in local and regional markets. Speedy construction of reinforced cement concrete work in highrise buildings by optimizing shoring and reshoring levels using genetic algorithm. Composition of geopolymer cement concrete mixes following materials are generally used to produce gpccs. Submission type 2 electronic and paper package journal of advanced concrete technology the authors. International journal of concrete structures and materials. Concrete durability properties, concrete tests, concrete construction controland to meet advancements made in concrete technology we should have to use latest technologies and various applications of concrete technologies like use of recycled materials in concrete, high performance concrete, air void analyzer. Experimental study on geopolymer concrete incorporating ggbs. By adding some alkali activator which is a mixture of sodium silicate na2sio3 and sodium hydroxide naoh in flyash would make geopolymer concrete 3. Equations for shear design of continuous reinforcedconcrete haunched beams based on stress fields and truss models. Effects of aggregate size on properties of concrete. International journal of concrete technology ejournal of.
The suitability of recycled plastics as coarse aggregate in concrete and its advantages are discussed here. Nawy prentice hall upper saddle river boston columbus san francisco new york indianapolis london toronto sydney singapore tokyo montreal dubai madrid hong kong mexico city munich paris amsterdam cape town. Prestressed concrete a fundamental approach fifth edition update aci, aashto, ibc 2009 codes version edward g. The compressive strength and the workability of geopolymer concrete are influenced by the proportions and properties of the constituent materials that make the geopolymer paste. Ceramic waste concrete cwc will be made with these tiles at 0%, 15%, 20%, 25% and 30%. Journal of advanced concrete technology jstage home. Concrete is an engineering material that simulates the properties of rock being a combination of particles closely bound together. Use of porous concrete or nofines concrete is an innovative way for storm water management, treatment, control, and to reduce water runoff. The factors that affect the production of geopolymer concrete such as source minerals, workability, curing time, and curing temperature are discussed in the paper. Kanta rao abstract the major problem the world is facing today is the environmental pollution. Compressive strength and microstructural properties of fly. Experimental investigation on geopolymer concrete g. In various states across the country, large aggregate, asphalt concrete, and concrete suppliers and.
The compressive strength of geopolymer concrete is about 1. Auti abstract common river sand is expensive due to excessive cost of transportation from natural sources. International journal of concrete technology ejournal. Nawy prentice hall upper saddle river boston columbus san francisco new york indianapolis london toronto sydney singapore tokyo montreal.
A comprehensive summary of the extensive studies conducted on fly ashbased geopolymer concrete is presented. Pervious concrete has a large open pore structure hence less heat storage and faster. Geopolymer concrete sustainable cementless concrete. One such is the geopolymer concrete and this paper presents an overview of recent advances in geopolymer concrete, a concrete formed by organicinorganic. Pdf merge combinejoin pdf files online for free soda pdf. If you are looking for a way to combine two or more pdfs into a single file, try pdfchef for free. Geopolymer concrete is an innovative material replacing conventional concrete which does not involve any quantum of opc as a binder, rather the binding properties are produced by the reaction of an alkaline. Study of the strength geopolymer concrete with alkaline. Guide for authors cement and concrete research issn 00088846. The use of plastic is increasing day by day, although steps were taken to reduce its consumption. Performance of geopolymer concrete under severe environmental conditions shankar h. Review article assessment of recycled aggregate concrete.
Test data are used to identify the effects of salient factors that influence the. Concrete mix construction using local materials in karak and tafila area mohmd sarireh assistant professor, tafila technical university, department of civil engineering, p. Recent cement and concrete research articles recently published articles from cement and concrete research. Geopolymer concrete also showed very high early strength. Journal of engineering research and studies eissn 09767916 jersvol. Cement and concrete research special issues elsevier.
The paper describes the results of the tests conducted on largescale reinforced geopolymer concrete members and illustrates the application of the geopolymer. Special issues published in cement and concrete research. The properties of mortars concrete made from geopolymeric binders are discussed with respect to fresh and hardened states, interfacial transition zone between aggregate and geopolymer, bond with steel reinforcing bars and resistance to elevated temperature. This concrete consists of portland cement, water, coarse aggregate, and same of percentage of fine aggregate. Quickly merge multiple pdf files or part of them into a single one. The aim of cement and concrete research is to publish the best research on cement, cement composites, concrete and other allied materials that incorporate cement. Due to migration of article submission systems, please check the status of your submitted manuscript in the relevant system below. Geopolymer is an inorganic aluminohydroxide polymer synthesized from. Geopolymer concrete is totally cement free concrete. In addition, concrete strength change and its distribution in a cbs of an anonymous twoloop pressurized water reactor was simulated by device. Recent cement and concrete research articles elsevier. Portland cement, actvated by water, to form a dense semi homogenous mass. Design of normal strength concrete mixtures with recycled.