Influence of curing types on strength of geopolymer concrete. Properties of geopolymer concrete with low calcium fly ash. Inorganic polymer concrete geopolymer is an emerging class of cementitious materials that. Here is the recipe for making geopolymer concrete, go wild. The fly ashbased geopolymer paste binds the loose coarse aggregates, fine aggregates and other unreacted materials together to form the geopolymer concrete, with the presence of admixtures.
Geopolymer concrete market global industry analysis. Ecrete is zeobonds proprietary geopolymer technology product. The manufacture of geopolymer concrete is carried out using the usual concrete technology methods as in the case of opc. A study on strength properties of geopolymer concrete with. Geopolymer concrete seminarrrrrrrrrrrrrrrrr slideshare. Rising number of applications of geopolymer concrete is one of the key factors expected to encourage the growth of the global geopolymer market in the next few years. Test procedures the geopolymer concrete was mixed in the following order. Chiu, fireresistant geopolymer produce by granulated blast furnace slag, minerals engineering, vol.
Kanta rao abstract the major problem the world is facing today is the environmental pollution. Consisting of fly ash, the byproduct of burning coal at a power station, and slag, the byproduct of steel manufacturing, ecrete reduces the embedded co2 of concrete by at least 60% compared to. Establishing a mix design procedure for geopolymer concrete. The geopolymer concrete material is mainly formed by two constituents the source materials and. This value is similar to that used in opc concrete in which it will be in the range of 75 to 80% of the entire concrete mix by mass. Geopolymer concrete, egyptian pyramids, and a new way. Techbrief briefly describes geopolymer concrete materials and explores some of their strengths, weaknesses, and potential applications. Our news dated december 10, 20, was titled worlds first public building with structural geopolymer concrete. Though geopolymer research has been underway for several decades, as far as was we know urbaneden is the first project in the world that has used geopolymer cement concrete as a building envelope solution.
The most important factors affecting the properties of geopolymer pastes are. The geopolymer concrete was dark in colour with shiny appearance. Fly ash and alkaline activator undergo geopolymerization process to produce alumino silicate gel. In the construction industry mainly the production of portland cement will causes the emission of. Geopolymer concrete ppt free download as powerpoint presentation. It is an excellent alternative construction material to the existing plain cement concrete. Mix design of geopolymer concrete in the design of geopolymer concrete mix, total aggregates fine and coarse taken as 77% of entire concrete mix by mass. The majority of research concluded that an amorphous structure of geopolymers is preferable in order to achieve desired mechanical strength. The reduced co2 emissions of geopolymer cements make them a good alternative to ordinary portland cement. Researchers have found a way to make concrete by fully replacing the cement content with fly ash, known as geopolymer concrete. Geopolymer concrete is an innovative construction material produced without using any amount of ordinary portland cement. In terms of global warming, the geopolymer technology could significantly reduce the co 2 emission to the atmosphere caused by the. Rangan, fly ashbased geopolymer concrete develoment and properties of lowcalcium fly ashbased geopolymer concret, research report gc 1, 2005. In geopolymer concrete cement is not used as a binding material.
Inherent variations in the chemical and physical composition of the raw materials can affect the final properties of the geopolymer e. The geopolymer concrete was placed in 100 mm cube moulds. Geopolymers are cementitious materials that do not require the presence of opc to harden or gain strength. Bragg published a method for classifying all kinds of silicates and their crystal structures based on the concept of the ionic theory by linus pauling. Fly ash based geopolymer concrete open access journals. Fa has been used in several areas, such as construction and building materials 3, cement and concrete applications 4, photocatalysis 5. Geopolymer concrete is an innovative construction material which shall be produced by the chemical action of inorganic molecules. Ecrete geopolymer concrete, fly ash concrete zeobond. Parametric studies on the workability and compressive strength. Geopolymer concrete shows significant potential to be a material for the future.
The relationship between the compressive strength and sio 2. This dissertation addresses this requirement for a standard mix design for geopolymer concrete. Fresh concrete mix 100 200 mm steel cylindrical mould in three layers. Fly ash, a by product of coal obtained from the thermal power plant rich in silica and alumina plays the role of cement in the concrete by the reaction with alkali. The potential use of geopolymer concrete and the future challenges are also. Finally, the better performance of geopolymer concrete to withstand sulfuric attack compared with ordinary portland cement concrete is due to low amount of calcium content in the material by which geopolymer concrete produced, and because geopolymer concrete does not produced from lime as it is the case with portland cement concrete, therefore. View and download powerpoint presentations on geopolymer concrete ppt. Geopolymer materials represent an innovative technology that is generating considerable interest in the construction industry, particularly in light of the ongoing emphasis on sustainability. Geopolymer concrete has excellent properties within both acid and salt environments lowcalcium fly ashbased geopolymer concrete. Flyash is rich in silica and alumina reacted with alkaline solution produced aluminosilicate gel that. By assuming the ratio of alkaline liquid to fly ash as 0. Geopolymer concrete shall be produced without using any amount of. Ecrete can be used in applications to replace or partially replace ordinary portland cement with environmental and technical benefits, including an 8090% reduction in co2 emissions and improved. Geopolymer synthesis ionic coordination or covalent bonding.
Geopolymer concrete minor project presentation youtube. What has been missing is the combination of this research in a way that would allow use of geopolymer concrete as a replacement to concrete based on ordinary portland cement. Workability of geopolymer concrete was measured by flow table apparatus and cubes of 150 mm side were cast and tested for compressive strength after specified period of oven heating. Geopolymer cement concrete urban eden unc charlotte. In that case geopolymer concrete samples with 3% and 6% nano silica addition and with 1% titanium dioxide tio 2 addition was also tested along with controlled geopolymer concrete samples at 28 days. Geopolymer concrete outline, advantages, disadvantages and applications. There is often confusion citation needed between the meanings of the terms geopolymer cement and geopolymer concrete.
Flyash based geopolymer concrete free download as powerpoint presentation. Very high strength 80 mpa grade and above geopolymer concrete is very cohesive and possesses very shorter initial setting time less than 1 hour due to lower waterbinder ratio in concrete mix. Pdf mechanical properties of mirhafly ash geopolymer concrete. Hence, geopolymer concrete has a great potential for utilization in construction industry as it is environmentalfriendly and also facilitates the use of fly ash, which is a waste product from coal burning industries. Erez allouche trenchless technology center louisiana tech university november 5, 2009 2 summary statement. The density of geopolymer concrete was around 2400kgm 3 which is equivalent to that of conventional concrete. Fly ash, silicafume, or ggbs, along with alkali solution are used as binders.
The factors that affect the production of geopolymer concrete such as source minerals, workability, curing time, and curing temperature are discussed in the paper. Mix proportions for the three slagfly ashbased geopolymer concrete mixtures studied c. Practical recommendations on use of geopolymer concrete technology in practical applications such as precast concrete products and waste encapsulation need to be. Geopolymer concrete turned out to be plastic enough on its own that we omitted this from future batches as unnecessary. View geopolymer concrete research papers on academia. Geopolymer concrete ppt sodium hydroxide fly ash scribd. Ppt geopolymer concrete for green construction materials.
Geopolymer concrete for durable linings tunneltalk. Experimental study on geopolymer concrete incorporating. A cement is a binder, whereas concrete is the composite material resulting from the mixing and hardening of cement with water or an alkaline solution in the case of geopolymer cement, and stone aggregates. It is observed that the results of workability and. On october 7, 2015, joseph and ralph davidovits drove with tom glasby and russell genrich, company wagners, from toowoomba to brisbane. Fine aggregate was taken as 30% of the total aggregates. Engineering fly ashbased geopolymer concrete nrmca.
An experimental study on slagfly ashbased geopolymer concrete 15 table 4. As geopolymer concrete is a new material in which cement is totally replaced by. Earth friendly concrete efc is a proprietary geopolymer concrete developed by the australian company wagners that is a viable and sustainable alternative to portland cement based systems. Find powerpoint presentations and slides using the power of, find free presentations research about geopolymer concrete ppt. Geopolymer concrete for green construction materials ppt video.
Download ppt geopolymer concrete for green construction materials. Fly ash, a by product of coal obtained from the thermal power plant is plenty available worldwide. Experimental study on geopolymer concrete incorporating ggbs v. In this respect, the geopolymer concrete with a much lower environmental footprint shows considerable promise for application in the concrete industry 4. Geopolymer concrete, a cement free concrete is an innovative green concrete in which binding properties are developed by the interaction of alkaline solutions with a source material that is rich. This is the only dangerous step in making geopolymer concrete, and its about as dangerous as making soap, which also uses lye. Summary statement inorganic polymer concrete geopolymer is an emerging class of. We think gcc is potentially a worldchanging technology and are excited to be able to present it to such a large cross section of the public. Knowing the density of concrete, the combined mass of alkaline liquid and fly ash can be derived. Geopolymer concrete for green construction materials 1 geopolymer concrete for green construction materials dr.
1023 820 222 1329 1002 200 754 1008 308 1221 242 657 875 1448 496 749 446 1380 525 544 1165 1082 1191 1147 850 1042 323 1 925 1320 880 1062 670 1347 1308 1094 1332 501 1355