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.
LeBron James thinks that he should have won Defensive Player of the Year and he still wants to. Tweet Share. ï Tweet Share on Twitter ïShare Share on Facebook ïPin Pinterest 5 Comments â Rec Recommend this Post 1. LeBron James has won a lot of awards. He's been MVP, an All-Star Game MVP and been named to several first-team All-NBA teams. But he's never been named the NBA's Defensive Player of the Year and says that he's 'highly upset' about it. I've been highly upset that I've never won Defensive Player of the Year, James said Saturday.