Compression strength properties of gypsum matrix composites with recovered fibrous scrap materials from post-consumer tyres

• Gypsum-based experimental cylindrical samples were prepared using three fractions of recycling tyre 'fluff' material ('as received', fractions >4 mm and <4 mm) in three proportions (10%, 20%, 30%) by weight. The density values of the samples were found to decrease with increasing the proportion of 'fluff' material incorporated in gypsum. Compressive strength and density of cylindrical samples were positively correlated for all combinations, and their relationships were found statistically significant. Compressive strength values ranged between 1.00-7.64 N/mm(2) for the 'fluff' fraction <4 mm, where they were the highest, 0.37-1.59 N/mm(2) for the 'fluff' fraction >4 mm, where they were the lowest, and between 0.39-4.22 N/mm(2) for the 'fluff' fraction 'as received' during recycling, where they were intermediate. Calculations of the required compressive strength in the case of using 'gypsum-fluff' building bricks in interior walls showed that all 'gypsum-fluff' combinations exhibited the adequate strength to perform successfully.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Composite Science and Engineering (hsv//eng)

Keyword

gypsum

tyre 'fluff'

recycling

density

compressive strength

building material

Technology (byts ev till Engineering)

Teknik

Publication and Content Type

ref (subject category)

art (subject category)