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Flashcards covering key vocabulary from the Sustainable & Advanced Materials lecture.
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Fatigue
Repeated change in stresses over time.
Sustainable Materials
Do not impact negatively on the natural environment and any living organism's health; resource-efficient throughout their life cycle; can be recycled/reused.
Carbon Capture and Storage (CCS)
Captures CO2 from sources like cement manufacturing plants and stores it in locations such as saline aquifers, depleted oil and gas reservoirs, and coal beds.
Algae-based CO2 Capture
Using CO2 as feedstock for algae, and then using the algae as agricultural feed.
Cement Replacement
Cement replacements like Pulverised Fuel Ash (PFA/Fly Ash) or Ground Granulated Blast-furnace Slag (GGBS) which can save 850kg of CO2 for every tonne of Portland cement.
Zero/No Cement Concrete
Concrete made using pozzolans such as volcanic ash, ground bricks, and tiles mixed with lime, as done by the Romans.
Sustainable Aggregates
Volcanic ash, fly ash, and quarry fines heated with captured CO2.
Manufactured Aggregate from Blast Furnace Slag
GGBS (a by-product of steel making) crushed and screened to suitable sizes.
Recycled Concrete Aggregates
Crushed clean, sound concrete from demolition waste, used as a partial replacement (≥30%) for non-structural work.
Manufactured Sand
Crushed rock used to replace river sand; can replace up to 60% of natural sand.
Fly Ash based Geopolymer Concrete
Concrete based on fly ash, sodium hydroxide, and sodium silicate solution.
Geopolymer Concrete Properties
Similar engineering properties to conventional OPC concrete, with higher tensile and bond strength, high resistance to sulphate attack, fire, and acids, and low creep and drying shrinkage.
3D Printing of Concrete
Robotic arm attached to gantry to place concrete with zero slump, no need for shuttering or compaction; often reinforced with fibers.
Self-Healing Concrete
Concrete that heals cracks when they form by releasing materials like microencapsulated sodium silicate.
Dincel System
Internationally patented permanent polymer formwork for walls/columns, where reinforcement and concrete can be filled to avoid formwork.
Mortarless Masonry
Blocks connected like Lego without any mortar, offering time efficiency, less waste, and cost-effectiveness.
Fiber Reinforced Polymers (CFRP)
Very high tensile strength (>1500MPa) material used for strengthening concrete, wood, and steel.
Auxetic Materials & Composites
Materials that expand laterally when elongated and contract laterally when compressed (negative Poisson’s ratio); used in blast and impact resistance applications.