Of these, silica fume is the most reactive, with metakaolin being close to silica fume in terms of reactivity. Fly ash is less reactive, especially during the first few days of curing when less calcium hydroxide is generated. Generally the finer the pozzolan particles are, the more reactive they are. Silica fume is the finest with most particles averaging 0.3 Âµm (microns), metakaolin averages about 4 Âµm, Portland cement averages about 15 Âµm, and fly ash about 70 Âµm. Many pozzolans are waste products from industrial processes.
The most recent Rookie of the Year winner is Karl-Anthony Towns. Twenty-one winners were drafted first overall. Fourteen winners have also won the NBA Most Valuable Player (MVP) award in their careers; Wilt Chamberlain and Wes Unseld earning both honors the same season.
> NBA History: Awards. A year-by-year list of the Kia Defensive Player of the Year Award winners: YEAR PLAYER TEAM 2016-17 Draymond Green, Golden State Warriors (Voting Totals) 2015-16 Kawhi Leonard, San Antonio Spurs (Voting Totals) 2014-15 Kawhi Leonard, San Antonio Spurs