high volume fly ash concrete (hvac ) for infrastructure

High Volume Fly ash Concrete(HVAC ) for Infrastructure development

Applications:• Power (Hydro, Thermal & Nuclear) sector.• Dams, Barrages & Irrigation Projects.• Marine Projects (Underwater Concreting).• Environmental Engineering Projects.

• High volumes of fly ash• Low water content• Low Portland cement content

Environmental Geomechanics Lecture No. 8 D N Singh

Slide 6IIT Bombay

Silica Fumes

Silica fume, also known as microsilica, is a by-product of the reduction of high purity quartz with coal in electric furnaces in the production of silicon and ferrosilicon alloys.

Silica Fume is also collected as a by-product in the production of other silicon alloys such as ferrochromium, ferromanganese, ferro magnesium,and calcium silicon.


Slide 7IIT Bombay

Need for recycling and reuse of Tires

Threat to human health and the environment (poisonous gas production)

tire fires

Collection of rainwater (Mosquito breeding)

Land Pollution

Recycling or Reuse

Stockpiled or landfilled

IIT Bombay

Unsightly


Slide 8

Civil Engineering Applications of Scrap Tires

Sub-grade Insulation for Roads

Road embankments Asphalt Rubber Pavement


IIT Bombay Slide 9

Pavement Requirements

● Durability (Flexible/ Rigid)● Deformation/ Modulus● Thermal Resistance● Rutting Resistance● Wearing● Shrinkage Resistance● Skid Resistance

Rubber Tire with Steel Mesh meets all above requirements


Slide 10IIT Bombay

Splicingof

Side-walls

Schematic diagram of spliced and flattened TireEnvironmental Geomechanics Lecture No. 8 D N Singh

Slide 11IIT Bombay

Prof. R C JoshiUniv. of Calgary, Canada

Longitudinal Direction of PavementW

idth

of

Pav

emen

t


Slide 12IIT Bombay


Slide 13IIT Bombay

Growing plants without soil)

Beneficial Use of Glass Aggregates

www.deme.be/projects/malaysia_pulauindah.html

http://www.deme.be/projects/maldive_hulhumale.html

Application of Dredged Material


Slide 14IIT Bombay

Beneficial Use of Dredged Material

• Beach nourishment • Shore protection • Soil creation/enhancement• Land reclamation • Habitat restoration • Construction materials


Slide 15IIT Bombay

Characterization of waste

1. Water content2. Density3. Granulometry (fractions of gravel, sand, silt and clay)4. The following constituents:

a) Total organic carbonb) Carbonate contentc) Mercury, arsenic, cadmium, copper, lead, zinc, chromium, nickel, iron, manganese.d) Organochlorinese) Total extractable hydrocarbonsf) Tributyltin (TBT) and dibutyltin (DBT)g) Polycyclic aromatic hydrocarbons (PAH)h) Toxicity tests (Microtox or whole sediment bioassay)i) Thermal & Chemical stability


Slide 16IIT Bombay

Characterization of waste


Need for a completePhysico-chemico-Mineralogical

Thermal & Electrical Characterization

To understand their behavior and recommending a proper utilization scheme

Slide 17IIT Bombay

high volume fly ash concrete (hvac ) for infrastructure

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