Geopolymer concrete ppt | PPT

• Fly ash -combustion by-product of coal in coal fired power plants -two classes of fly ash are F and C TABLE1:CHEMICAL COMPOSITION OF FLY ASH OXIDES PERCENTAGE SiO2 52 Al2O3 33.9 Fe2O3 4 CaO 1.2 K2O …

WhatsApp: +86 18221755073

Bagasse ash ppt | PPT

Bagasse ash ppt - Download as a PDF or view online for free. Bagasse ash ppt - Download as a PDF or view online for free ... for cement in concrete 33 3. A.D.V.S. Siva Kumar, K.V.G.D. Balaji, T. Santhosh kumar"Behavior of sugarcane baggase ash concrete exposed to elevated temprature"International Journal of Advance Research In Science And ...

WhatsApp: +86 18221755073

Fly Ash in Concrete

The use fly ash in concrete has dramatically increased in the last 20 years. You can get fine & high volume product from the high volume fly ash suppliers company. – A free PowerPoint PPT presentation (displayed as an …

WhatsApp: +86 18221755073

Fly Ash in Concrete

The use fly ash in concrete has dramatically increased in the last 20 years. You can get fine & high volume product from the high volume fly ash suppliers company. – A free PowerPoint PPT presentation (displayed as an HTML5 slide show) on PowerShow - id: 838da3-OTU2N

WhatsApp: +86 18221755073

Fly Ash Utilization in Concrete

Fly Ash is a pozzolan that possesses little or no cementitious properties by itself. Fly Ash will react with calcium hydroxide generated during cement hydration to form compounds having cementitious properties.

WhatsApp: +86 18221755073

High Volume Fly-Ash Concrete | PDF | Fly Ash

The document summarizes a seminar presentation on high volume fly ash concrete (HVFAC). It discusses that HVFAC uses a high percentage (over 30%) of fly ash as a partial cement replacement. The presentation covers the properties of fly ash and HVFAC, including improved workability, lower heat of hydration and permeability. It compares HVFAC to conventional …

WhatsApp: +86 18221755073

Fly ash presentation | PPT

Fly ash presentation - Download as a PDF or view online for free ... industrial by product from Thermal Power Plants is proven suitable for variety of applications as ad mixture in cement/ concrete/ mortar/ bricks/ block etc. Fly Ash as a building material has many advantages, ... (in 15-25 10-15 10-15 %) 8. Breakage 5-7 1/2 percent Less than 1 ...

WhatsApp: +86 18221755073

On Fly Ash by Sumit Suman | PDF | Fly Ash | Concrete

ppt on fly ash by Sumit Suman.pptx - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Fly ash is a byproduct of coal combustion in thermal power plants. It is finely divided ash that is carried off with the flue gases. Fly ash can be used in cement, concrete, bricks, road construction, and agriculture to improve …

WhatsApp: +86 18221755073

PPT

They found that (1) concretes manufactured with Class C fly ash typically demand a lesser amount of AEA compared to individuals made with Class F fly ashes; (2) for six percent atmosphere articles in concrete, the AEA varied from 126 to 173percentfor fly ashes owning much more than ten percent CaO, while it had been in the assortment of 177 to ...

WhatsApp: +86 18221755073

Fly Ash Concrete PowerPoint PPT Presentations

AAC blocks are produced using a variety of raw materials. Flyash or sand is the primary ingredient in Aerated Autoclaved Concrete (AAC). Fly ash makes up 65-70 percent of the …

WhatsApp: +86 18221755073

HIGH-VOLUME FLY ASH CONCRETE | PPT

3. Fly Ash Concrete:Fly Ash Concrete: In commercial practice, the dosage of fly ash is limited toIn commercial practice, the dosage of fly ash is limited to 15%-30% by mass of the total cementitious material, which has15%-30% by mass of the total cementitious material, which has a beneficial effect on the workability and cost economy ofa beneficial effect on the …

WhatsApp: +86 18221755073

100 percent fly ash concrete ppt

100 percent fly ash concrete ppt - klaasjepostma.nl. 100 percent fly ash concrete ppt. The Companies Mixing Up Greener Cement GreenBiz. Nov 12, 2009 · Replacing 50 percent of the Portland cement in one cubic yard of concrete eliminates the need for between 281 and 640 pounds of material. Going Beyond Concrete.

WhatsApp: +86 18221755073

High volume fly ash concrete | PPT

WHAT IS HIGH VOLUME FLY ASH CONCRETE? High volume fly ash concrete is a concrete where a replacement of 50 to 60 percentage of cement is made with the usage of fly ash. But IS: 456 – 2000(Code of Practice for Plain and Reinforced Concrete) allows replacement of OPC by Fly ash up to 35% as binding material. 3

WhatsApp: +86 18221755073

Geopolymer concrete | PPT

6. NECESSITY OF GEOPOLYMER CONCRETE Construction is one of the fast growing fields worldwide. As per the present world statistics, every year around 260,00,00,000 Tons of Cement is required. This quantity will be increased by 25% within a span of another 10 years. Since the Lime stone is the main source material for the ordinary Portland cement an …

WhatsApp: +86 18221755073

Bendable concrete | PPT

• In proportioning mixes, for minimum paste volumes, one of principal function of a fly ash is to occupy void space which would otherwise be occupied by cement or water. ... to cracking. • It does not emit that amount of harmful gases as compared to conventional concrete. • The flexible concrete is approx. 20-40 percent lighter. • The ...

WhatsApp: +86 18221755073

Ash Utilization Strategy in India—A Way Forward

100 percent utilization of ash but still the same is not achieved due to lack of strin-gent policies, incentives, technical as well as general awareness among construction ... 6 Japan JIS A 6201 Fly Ash for use in Concrete. 150 P. N. Ojha et al. Table 10.3A Chemical requirements of fly ashes in different countries Country USA India European

WhatsApp: +86 18221755073

Evaluation of the Durability of 100 Percent Fly Ash Concrete

Durability of 100 Percent Fly Ash Concrete Introduction Western Transportation Institute Page 1 1. INTRODUCTION 1.1. Background For several years researchers at Montana State University have been investigating 100 percent fly ash based concretes—that is, concretes that use only fly ash (i.e., no Portland cement) as the binder.

WhatsApp: +86 18221755073

Use and effect of fly ash in concrete: A literature review

A type of fly ash increasingly used for engineering purposes is Vietnamese fly ash, which is used in optimal dosages of 10% and 20%, where an improvement in its mechanical property of flexu ral

WhatsApp: +86 18221755073

Flyash | PPT

15. Fly ash, being primarily pozzolanic, can actually replace a percentage of the Portland cement, to produce an even stronger, more durable and more environment friendly concrete. The initial compressive strength is low but as days pass, flyash concrete gains more strength and eventually has a lot more strength as compared to normal Portland cement. …

WhatsApp: +86 18221755073

Structural Applications of 100 Percent Fly Ash Concrete

PDF | On Jan 1, 2005, Doug Cross and others published Structural Applications of 100 Percent Fly Ash Concrete | Find, read and cite all the research you need on ResearchGate

WhatsApp: +86 18221755073

GREEN CONCRETE ppt.pptx

GREEN CONCRETE ppt.pptx - Download as a PDF or view online for free. Submit Search. GREEN CONCRETE ppt.pptx ... Uses Industrial Waste Green concrete uses anywhere from 25 to 100 percent fly ash. 9.

WhatsApp: +86 18221755073

Fly Ash Concrete Research Paper | PDF | Fly Ash

The document discusses partially replacing cement with fly ash in concrete. Fly ash is a byproduct of coal combustion that can replace up to 35% of cement. Using fly ash in concrete provides benefits like increased workability, reduced water demand, lower heat of hydration, and reduced cost. Test results showed that replacing cement with up to 25% fly ash increased compressive …

WhatsApp: +86 18221755073

Geopolymer concrete | PPT

6. PURPOSE OF GEOPOLYMER CONCRETE Fully replacement of cement by FLY ASH Portland cement production is a major contributor to CO2 emissions as an estimated 5 TO 8 %of all human generated. atmospheric …

WhatsApp: +86 18221755073

Cement and Concrete: Promise of Fly Ash | PPT

22. fly ash in concrete: durability against carbonation • carbonation refers to precipitation of calcite (caco3) thru reaction of penetrating atmospheric co2, with calcium hydroxide in pore solution • main consequence of carbonation is drop of ph of pore solution of concrete from standard values of 12.5–13.5, to a value of about 8.3, so that passive layer that …

WhatsApp: +86 18221755073

Rice Husk Ash in Concrete | PPT

This document discusses the use of rice husk ash (RHA) in concrete. RHA is a pozzolanic material that is produced from burning rice husks, an agricultural waste. RHA has physical properties like gray color, irregular texture, and particle size less than 45 microns. Chemically, RHA is high in silicon dioxide at 86.96% and can partially replace ...

WhatsApp: +86 18221755073

Effect of rice husk ash on the strenght and durability of concrete …

3. Concrete is the most vital material in the modern construction. RHA (RICE HUSK ASH) Concrete is the special type of concrete, that are produced by unusual techniques. Concrete is by definition a composite material consisting essentially of a binding medium and aggregate particles with definite proportion of water and it can take many forms. RHA …

WhatsApp: +86 18221755073

FLY ASH USE AS A REPLACEMENT OF CEMENT

Fly ash particles are generally spherical in shape and reduces the water requirement for a given slump. The spherical shape helps to reduce friction between aggregates and between concrete and pump line and thus increases …

WhatsApp: +86 18221755073

Proportioning of concrete mix | PPT

[To add fly ash or other mineral admixture, 10% of cement content may be added ] The cementitious material content = 1.1x345 = 380 kg/m3 Let us use fly ash at 30% Therefore; Fly ash content = 0.3x380 = 114 kg/m3 Cement content = 0.7x380 = 266 kg/m3 2/26/2018 Dr.V.Kannan 39

WhatsApp: +86 18221755073

flyash | PPT

8. 2. Type of Fly Ash as per American Society for Testing and Materials (ASTM C618) Depending on the type of coal and the resultant chemical analysis, ASTM has classified flyash into, A. Type C Type C fly ash is produced from the combustion of lignite or sub bituminous coals, contains CaO higher than 10 percent and possesses cementitious properties in addition …

WhatsApp: +86 18221755073

PARTIAL REPLACEMENT OF CEMENT BY FLY ASH AND …

25

WhatsApp: +86 18221755073