Trylinka

Trylinka (Polish: [trɨˈliŋka] ^ⓘ; pl. trylinki), also known as shashka Trylins'koho (Ukrainian: шашка Трилінського, lit. 'Tryliński's paving block'), is a concrete block, typically shaped as a regular hexagon or occasionally a tetragon, with stone fragments embedded in its upper layer. The types of stone used for these embedments, such as basalt and porphyry, vary depending on local availability. Cost-effective and durable, trylinki were widely implemented in Polish road construction during the interwar period. Between 1933 and 1938, these pavers were installed across an estimated 1 million square metres (11 × 106 sq ft) of roadway. Some of these paved surfaces remain extant in what are now Belarus and Ukraine.

Trylinka is named after its inventor, Władysław Tryliński, a transportation engineer credited with the engineering design of the Maurzyce Bridge, a project he shared with construction engineer Stefan Bryła. Whilst overseeing the production of aggregates and paving slabs at the Miękinia porphyry quarry, Tryliński observed that the manufacturing process generated large amounts of fragmented stone waste, leading to his idea of recycling these fragments as embedments in trylinki.