Chen Chen-chuan, professor of civil engineering at National Taiwan University and a national authority in concrete research, elaborates: "Concrete with furnace slag and fly ash added lacks initial period strength in construction, but initial period strength is not always necessary, especially in precast and large area structures like dams, dykes, roads and large-scale foundations.
我們研究混凝土的專家，台大土木系教授陳振川指出：「在工程使用上，雖然添加飛灰、爐石材料的混凝土初期強度較差，但並非所有營建工程都需要很高的初期強度，特別是預鑄及巨大體積的結構，如水壩、堤防、道路、大型基礎等。