Fly Ash to Replace Natural Aggregates

Fly ash is a fine powder, a by-product of the combustion of pulverized coal in power plants. Fly ash is a pozzolan, a substance containing aluminium and siliceous substances, which forms cement in the presence of water.
Sheena

Updated: Nov 21, 2020 10:52:27 pm

Fly Ash to Replace Natural Aggregates

21 November 2020 Current Affairs:

National Thermal Power Corporation has developed geopolymers made from fly ash to replace natural aggregates used in construction.

Highlights:
♦ Fly ash is a fine powder, a by-product of the combustion of pulverized coal in power plants. Fly ash is a pozzolan, a substance containing aluminium and siliceous substances, which forms cement in the presence of water. When mixed with water and lime, fly ash can form compounds similar to Portland cement.
♦ Fly ash can be used as the main material for many cement-based products, such as poured concrete, concrete blocks and bricks. One of the most common uses of fly ash is in Portland cement concrete pavement or PCC pavement.
♦ Road construction projects using PCC can use a large amount of concrete, and replacing it with fly ash can bring significant economic benefits. Fly ash is also used as embankment and mine filling.
♦ As part of the concept of optimal waste utilization, the fly ash from thermal power plants can be fully utilized.
♦ The aggregates of soil polymers can not only improve the utilization rate of fly ash, but also save the environment. In addition, the land demand for ash ponds is negligible. Geopolymers are inorganic materials, usually ceramic materials, that can form long-distance, covalently bonded amorphous (amorphous) networks.
♦ In fact, geopolymer mortar based on fly ash will act as a binder. Geopolymer aggregates will help reduce carbon emissions and have great potential to reduce water consumption.
♦ According to one estimate, the country’s total annual demand for infrastructure development is about 2 billion tons.
♦ The aggregate developed by NTPC using fly ash will meet the demand to a large extent and will also reduce the environmental impact of natural aggregates that require quarrying.

Free Current Affairs to Your Email

Latest Current Affairs 2020

Defence

Raising Day of BSF Was Celebrated on 1 December

Dec 02,2020 05:37:27 pm
The BSF - Border Security Force has always lived up to its motto "Duty for Life" (Jeevan Paryant Kartavya) with its bravery and prowess.
Fresherslive . 19 hours ago
Defence

Indian Navy Successfully Fired BrahMos

Dec 02,2020 05:37:11 pm
The first launch of BrahMos was carried out in 2001. So far, various ships, mobile automatic launchers and Su-30 MKI aircraft have been launched multiple times.
Fresherslive . 19 hours ago
Environment

The Transboundary Manas Conservation Area Receives The Conservation Excellence Award

Dec 02,2020 05:36:54 pm
The TraMCA landscape forms an important mosaic of the entire protected area in the eastern Himalayas. It covers the entire Manas Tiger Reserve in India, four reserves in Bhutan and two biological corridors.
Fresherslive . 19 hours ago
Environment

Pilibhit Tiger Reserve Bags International Award TX2

Dec 02,2020 05:36:40 pm
TX2 goal is a worldwide commitment to double the number of wild tigers in the world by 2022.
Fresherslive . 19 hours ago
International

Talks Held Between India and Vietnam

Dec 02,2020 05:36:14 pm
Vietnam also invited India to participate in the ASEAN Defense Ministers Meeting-Plus (ADMM Plus) hosted by Vietnam in December 2020.
Fresherslive . 19 hours ago
International

SCO Online International Exhibition Was Commenced

Dec 02,2020 05:35:59 pm
Visitors can browse Indian Buddhist treasures from and Dhara and Mathura schools, Nalanda, Amaravati, Sarnath, etc. in virtual 3D format.
Fresherslive . 19 hours ago
Indian Affairs

Bonda Tribe Sees Rise in Distress Migration Due To Covid

Dec 02,2020 05:35:48 pm
In India, the tribal population accounts for 8.6% of the total population. Tribal residents live in about 15% of the countrys geographic area.
Fresherslive . 19 hours ago
Environment

Peacock Soft-Shelled Turtle Rescued From a Fish Market

Dec 02,2020 05:35:31 pm
Turtles heads are large, their mouths are bent downward, and the low olive-coloured oval carapace is dark olive green, turning almost black, sometimes with yellow edges.
Fresherslive . 19 hours ago
Important Days

December 2 is observed as National Pollution Control Day

Dec 02,2020 05:35:18 pm
Pollutants in the air may pass through protective barriers in the body and may damage your lungs, brain and heart.
Fresherslive . 19 hours ago
Important Days

December 2 Is Regarded As the International Day For The Abolition Of Slavery

Dec 02,2020 05:35:05 pm
On December 2, 1949, the UNGA - United Nations General Assembly approved the "Convention for the Suppression of Trafficking in Persons and Exploitation of Prostitution."
Fresherslive . 19 hours ago

Daily Current Affairs 2020



Subscribe to Current Affairs

Enter your email to get daily Current Affairs
Current Affairs PDF

Current Affairs 2020 December

December 02
News Quiz
December 01
News Quiz

Current Affairs 2020 November

November 30
News Quiz
November 28
News Quiz
November 27
News Quiz
November 26
News Quiz

Current Affairs 2020 October

October 31
News Quiz
October 30
News Quiz
October 29
News Quiz
October 28
News Quiz