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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    I want to start making my own glass aggregates, rather than giving my glass away to the council (and paying to get it back!). Could I then use the glass to wholly replace any sands, in any cement/lime/concrete mix? And how accurately would I have to grade it?

    What would you use - a wood shredder? A former colleague used to live on an island nature reserve, and they used to shred virtually everything, I think, including bottles, to reduce the volume of waste to be shipped back of the island. I don't know what sort of particle size they got down to.

    I was planning to do it by hand, i don't mind a challenge, by gentle tapping with a hammer (with glass in a bag) then a rolling pin or block to produce finer If there's a cheap labour saving way i would obviously choose that!

    Hand crushing them i've seen two 'grades' produced, very fine (like sugar or salt) which i assume i could use as fine sand? and slighty larger like the kind used in decorative screeds and worktops.
    • CommentAuthorCerisy
    • CommentTimeNov 19th 2014
    Perhaps put them in a cement mixer?
    • CommentAuthorowlman
    • CommentTimeNov 19th 2014
    First the tools for the job, then it's hard graft.


    • CommentTimeNov 19th 2014
    How much glass do you actually have?
    • CommentTimeNov 19th 2014
    Catering liquidiser? Or a vegetation shredder? It's a gd idea
    • CommentTimeNov 19th 2014
    Or an old metal garden roller.
    Nothing saved as yet, but for 7/8 months of the year I will have around 3 over full glass recycling boxes every week.
    • CommentTimeNov 19th 2014
    Wino :bigsmile:
    • CommentTimeNov 19th 2014
    Wi no and wi understand
    • CommentAuthorSteveZ
    • CommentTimeNov 20th 2014
    Many (many) years ago, I worked for the British Glass Industry Research Association. Occasionally we had to crush and mix batches of ingredients to try new formula glass. Any rock crushing used a small oscillating plate crusher driven by an electric motor. You drop the ingredients into the aperture at the top and it falls between a fixed head and a moving plate. The gap between these is adjustable and determines the size of the final product. I have tried a quick web search for one without success, but you may find something similar out there. You could give BGIRA in Sheffield a call, if they are still around.
    A cheaper method would be to buy an iron pestle and deep iron mortar, add a couple of sieves and get bashing!
    Think looks like a handy tool, Expleco Oppressor GLS Sand Glass Bottle Crusher, would be even better if they took the labels off first. If only i owned by own bar.


    Probably costs more than a few bags of sand though, Mortar and pestle more than likely.
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