What is it about the manufacturing of cement....?

dentstudent · « **on:** 03/12/2008 10:57:27 »

that makes it so environmentally unfriendly?

We live in and around an extinct volcano and there is nearby a small open-caste extraction of the rock. Not being a geologist, I've no idea about what they're extracting, but it seems that cement is being made. I've heard that this process is one of the most environmentally unfriendly ones around. Is it just the energy used to make the cement or are there other factors, such as carbon release from the extracted ores?

Thanks!

Bored chemist · « **Reply #1 on:** 03/12/2008 20:00:41 »

It involves digging holes in the ground which isn't generally viewed as environmentally friendly. The extracted limestone is then heated (using lots of fuel) with clay etc and gives off the CO2 it contains.
That's a trebble whammy.
Then they use it to concrete over green stuff or make roads for yet more cars to run on ...

dentstudent · « **Reply #2 on:** 04/12/2008 07:40:05 »

The usual suspects then...ta BC

dentstudent · « **Reply #3 on:** 05/12/2008 07:44:54 »

Quote from: gfdshr on 05/12/2008 07:41:40

Quote from: dentstudent on 03/12/2008 10:57:27
that makes it so environmentally unfriendly?

We live in and around an extinct volcano and there is nearby a small open-caste extraction of the rock. Not being a geologist, I've no idea about what they're extracting, but it seems that cement is being made. I've heard that this process is one of the most environmentally unfriendly ones around. Is it just the energy used to make the cement or are there other factors, such as carbon release from the extracted ores?

Thanks!

Yeah, i think so, its very cold here. []Cabal gold cheap.

Could this be the return og WOWgold?

MOD EDIT - YOU MAY WANT TO DELETE THIS NOW THAT THE SPAMMY POST ABOVE HAS GONE - THANKS!

elmejor · « **Reply #4 on:** 18/12/2008 06:21:18 »

never heard of this. cement from volcano! can you elaborate on more, how it is not good for the environment?

lyner · « **Reply #5 on:** 20/12/2008 21:40:26 »

The Pantheon Roof in Rome used concrete from a volcano.

elmejor · « **Reply #6 on:** 03/01/2009 11:13:16 »

okay it must be fly ash, it is not a replacement of cement, it is added with cement. and it increases the life of construction by 40-50 years if used in proper proportions!

lyner · « **Reply #7 on:** 03/01/2009 13:28:27 »

You must be right - the 'cement' process involves calcium hydroxide, which would have to come from a sedimentary rock rather than an igneous one.
(I did use the word concrete - not cement in my last post)

Could we capture carbon monoxide and carbon dioxide and make them into cement? Started by thedocBoard Chemistry	Replies: 2 Views: 4928	09/06/2016 14:25:47 by chiralSPO
Can milk prevent lung damage when working in cement stores? Started by thedocBoard That CAN'T be true!	Replies: 5 Views: 22242	27/09/2019 06:02:01 by Evageasse
What are the chemical properties of clay, cement and glass? Started by stanaBoard Geology, Palaeontology & Archaeology	Replies: 8 Views: 30384	04/07/2008 02:35:42 by JimBob
What is the chemical composition of the clay used to make cement? Started by rakes12Board General Science	Replies: 1 Views: 4706	09/04/2009 16:40:44 by Bored chemist
Need suggestions on cement / pop release agent . Started by eric2011Board Geology, Palaeontology & Archaeology	Replies: 3 Views: 2607	22/05/2024 08:22:00 by nicephotog

What is it about the manufacturing of cement....?

dentstudent (OP)

What is it about the manufacturing of cement....?

Bored chemist

What is it about the manufacturing of cement....?

dentstudent (OP)

What is it about the manufacturing of cement....?

dentstudent (OP)

What is it about the manufacturing of cement....?

elmejor

What is it about the manufacturing of cement....?

lyner

What is it about the manufacturing of cement....?

elmejor

What is it about the manufacturing of cement....?

lyner

What is it about the manufacturing of cement....?

Similar topics (5)

Follow us

cambridge_logo_footer.png