Key topics:Afrimat revenue jumps 20% despite SA economic pressuresDiversification boosts profits as Lafarge assets recoverDebt reduction and rare earths project drive future focusBizNews ReporterFor those of us closely tracking the BizNews Ricardo portfolio, Afrimat has long been a fascinating holding. It is a business built on the timeless fundamentals of astute capital allocation, entrepreneurial grit, and a management team that prefers rollin…