Alternative Ceramic Supply


Materials
  1. Brick Rubble
  2. Granite Offcuts
  3. Dolerite Offcuts
  4. Broken Bisque
  5. Concrete Rubble
  6. Glass Sludge
  7. Wood Ash
  8. Bone Ash
  9. Marble Offcuts
  10. Oyster Shells


Bulk Buy
Ground Works


Info
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      6. Glass Sludge

      Test tiles using glass sludge glaze blends, fired to midfire (cone 6, left) and stoneware (cone 9, right). Materials were not added to clay bodies due to fluxing or invisibility. Glaze tests (top to bottom): glass sludge glaze alone, +10% brick, +10% concrete, +10% brick & concrete, +30% more glass sludge.


      FIRST LIFE  

                  ORIGINUnknown glass manufacturer

                 MEASUREMENTSn/a

                 COLOURWhite with a few dark flecks
                 TEXTUREExtremely fine

                FINISH / FEATURESCornflour-like consistency 

      SECOND LIFE 

                 COLLECTION LOCATION -37.7278478025733, 144.95511572750289

                  DATE OF COLLECTION
      September 2023

                  SUBURBCoburg North

                  COUNTRYWurundjeri Woi Wurrung

                  LOCAL COUNCILMerri-Bek


      MATERIAL INFORMATION

                 COMPOSITION Commercial soda-lime-silica glass is composed mainly of sand (silicon dioxide, or SiO2), limestone (calcium carbonate, or CaCO3), and sodium carbonate (Na2CO3). 

      POTENTIAL APPLICATIONS

                 SUBSITUTE FOR
      Silica
      Frit
                 IN CLAY BODY
      Lower the melting temperature of the clay. Note: may cause slumping.

                 IN GLAZE      Test as 1:1 substitute for ingredients listed above in a glaze recipe

      PREPARATION

                 CALCINATION
      n/a
                 CUSTOM PREPARATION
      Dry on plaster batts before sieving (be sure to wear a mask and only work with the dried material outdoors or in a very well-ventilated area)
      Filter through screen if desired 
                 MINIUMUM REQURIED EQUIPMENT
      n/a

                 RATING
      (Scale of 1 to 5, with 5 being hardest)
      n/a

                 NOTESn/a

      SAFETY &
      HANDLING

                 HAZARDS
      Dangerous when dry- extremely fine silica dust.
                 SUGGESTED PPE
      Respirator

      SOURCING

                 SEARCHING FOR SUPPLY
      Contact a glass/window maker and ask if you can collect the waste from the catchment of the line edge polishing machine, used to cut glass to size. 

                 WHAT TO BRING WITH YOU
      Bucket/container
      Elbow-length gloves recommended! 
      Shovel or scoop with sharp edge

                 QUESTIONS TO ASK
      Ask any employees for unwanted off cuts (natural stone only)How often does the catchment get emptied?
      Where does it go?

                 RECYCLABILITY AS-IS
      Construction
      • Infill construction base
      • Replace cement in mortar in ASR concrete

      Civil/Infrastructure
      • Road base component

                 COLLECTION RECOMMENDATIONS
      The incredibly fine glass tends to settle into a dense layer- we found success using a small shovel to dislodge the first chunk and then peeling segments away by lifting from underneath.