ACADEMIC
THE MATERIAL RESEARCH GLASS - Decomposition time ~ 1000 Years PAVING, FINISHES, COUNTERTOPS...
CONCRETE AGGREGATE REPLACEMENT
coarse crushed into
CULLET
Compressive strenght (at 28d) - improved with up to 20% replacement -marginally decreased with up to 40% replacement
GLASS-CRETE BLOCKS & MORTARS
OPC CEMENT REPLACEMENT Compressive strength (at 28d) - improved 114% up to 5% replacement
fine
PROPERTIES: • Main Component: Silica • Amorphous • Transparent • Transmit, Reflect, Refract Light • Durable
+water +cement
• • • • •
Resilient to Chemical Attack Waterproof Poor Electric Conductor Dense (2500 kg/m3) � = 1 W/mK
Compressive strenght (at 28d) - improved up to 100% aggregate replacement when combined with pulverished fuels ash, matakaolin, reactive magnesia to counteract alkali-silica reactions).
GLASS-CRETE BLOCK (STRUCTURAL)
+ cost saving
+ improved thermal properties
+ aesthetically pleasing
- Alkali-Silica Reactions (ASR) between cullet and OPC can cause
+ improved sound-proofing
durability problems
GLASS-CRETE TILES &FINISHES
+ OPC can be partially replaced with pulverished fuels ash (15%),
+ easy process
matakaolin (15%), reactive magnesia (5%) to counteract (ASR). This also
+ OPC can be replaced with natural binders
improves compressive strenght, using 100% of the cullet as aggregate.
+ aesthetically pleasing
LIMESTONE Natural cements, mortar and plasters Lime Cement = lime + clay (heated in kiln 800-900 °C) Lime Concrete = lime + sand + water + coarse aggregate Lime Mortar = lime + sand + water + good waterproofing when mixed with clay (6 - 25%) (hydraulic can also set underwater) + breathable (vapour permebale) - needs to be heated in a kiln at 900°C, to obtain better waterproofing properties (otherwise at minimum 800°C) - reduction of mechanical strenght (compared to conventional concrete) - corrosion of incorporated metals - �=1.26-1.33 W/mK
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