Hi Aseel,

There are several recycling materials that has the potential to be used in concrete. Few of them are tire derived aggregates, crumb rubber, iron slags, e-wastes, etc.  

The ones you mentioned are the only things i know.

Hello Mss.Aseel,

Kindly, if you use slag cement , fy ash and paper mills it will be good . Find attached Link and PDF. THANKS 

http://www.greenconcrete.info/recycled.html

Hi Aseel,

There are several recycling materials that has the potential to be used in concrete. Few of them are tire derived aggregates, crumb rubber, iron slags, e-wastes, etc.  

Dear Madam dont forget dried dropped leaves from trees such as teak trees as the leaves are good and strong and has tremendous binding strength  --- it is a age old technique when in old times mud walls were built. Thanks

Can we think of bamboo reinforced concrete?

We use biomass ashes, that are a waste from paper industry. The biomass ash can be use as partial replacement for cement or for filler.

Also, you can use mixed recycled aggregate, waste glass, recycled PET, wood wastes, naphtalene sulfonate, cork waste, for example. 

use the waste tyre as the partial replacement of the aggregate and combine one of the fibers in  it.... combination of waste with some advance construction material.

dear aseel

To produce a green concrete, you can use recycled concrete aggregates, recycled masonry aggregates,recycled waste tire,recycled PET and recycled bricks as an coarse and fine aggregate. Fly ash, micro silica, nano silica,rice husk ash, zeolite and metakaolin are most common supplementary cementitious material (SCM) to reduce cement content. some another materials like recycled glass in the form of powder (as a filler ) and aggregate and bamboo, recycled PET as fiber are an other materials to produce green concrete.

Here, I have listed down some of the waste materials that can be used in concrete to make is greener that conventional concrete. However, the decision should be made based on the availability of waste material in your place. 

Aggregates: 

1. Recycled aggregate (coarse & fine aggregate) [Concrete industry waste]

2. Palm oil shell (for light weight concrete) [Agricultural waste]

3. Waste glass including CRT waste glass (coarse & fine aggregate)

4. Coconut shell (for light weight concrete) [Agricultural waste]

5. Waste Tyre aggregate (coarse & fine aggregate) [Industry waste]

Binders:

1. Agricultural waste:

   a. Rice husk ash

   b. Palm oil fuel ash

   c. Sugarcane baggase ash

   d. Wheat straw ash

   e. Wood dust ash

   f. Bamboo leaf ash

2. Industrial waste:

   a. Fly/Bottom ash

   b. Slag

   c. Silica fume

   d. Residual calcium carbide

thank you very much for all

PPT on Green concrete by Pankaj Kumar

http://www.slideshare.net/PankajKumar422/green-concrete-35268320

Recycled Materials in Concrete Reduce CO2 Emissions and Landfill Use

http://www.greenconcrete.info/recycled.html

GREEN CONCRETE

http://theconstructor.org/concrete/green-concrete/5566/

High Strength Concrete. Sustainable Concrete.

http://www.ceratechinc.com/products/ekkomaxx

What is Green Concrete?

http://www.nrmca.org/research_engineering/documents/what_is_green_concrete.pdf

Concrete Construction Staff/WHAT IS GREEN CONCRETE?

http://www.concreteconstruction.net/how-to/what-is-green-concrete_o

PAPER INDUSTRY WASTE

Dear Aseel B Al-Zubaidi,

 You can use Volcanic ash, sludge powder, Incinerated Sludge ash, flash, volcanic ash, wood ash, waste from industries like haematite, Silica, paper industry waste, textile industry waste,e waste, thermosetting plastic waste etc. as a partial replacement with cement or some with fine aggregates.

It depends on what you are trying to achieve.  Most concrete technologists subscribe to "the rule of 5%" - you can put what you like in so long as you don't exceed 5 %.  But I think you are more interested in the possibility of replacing cement content?  To some extent the same rule applies, but you need to think very carefully about how whatever it is you are puuting in will affect the chemistry of the system: you need something that has a high silica/alumino-silicate content.

Dear Aseel

The constituents of concrete can be recycled materials, and concrete itself can also be recycled; these materials are usually available locally. Most concrete in urban areas is recycled as fill or road base and not placed in landfills. Concrete pieces from demolished structures can also be reused to protect shorelines, for example in gabion walls or as rip rap.

Dear Dr.Aseel

I sent for you this research which contains some information about what you are looking for.

THANK YOU FOR YOUR ANSWERS .....ALL YOU SAID I DID IT IN MY PAPERS . I LOOK FOR NEW MATERIALS... THANK YOU

Crushed glass is used as is recycled broken concrete.

Crushed shells are also used for recycling

volcanic ash and flash can be exploited

You have to find a material that can not be degradable or can not recyclable then it represent an environmental issue . for example all types of plastic can be recycled to plastic again except plastic type PET. so you can use PET grains in concrete .Also the grains of used tires can be used in concrete .

You can use fly ash and rice husk ash

Papercrete,green cement(new product)cement replaced by lime

THANK YOU FOR YOUR ANSWERS .....ALL YOU SAID I DID IT IN MY PAPERS . I LOOK FOR NEW MATERIALS... THANK YOU

bamboo stick,strip,mat,fibres

Prior to use apply resin coat to protect from decay

Resin coated dry coconut fiber

use natural fibers with resins

Use natural fibers with resins .