Influence of Pore Forming Agent on Properties of Micro-pored CA_6-MA Material

Micro-pored CA_6 - MA lightweight material with CA_6:MA mass ratio of 7:3 was prepared using Al(OH)_3. MgCO_3 and CaCO_3 as starting materials,and anthracite. sweet potato starch and anthracite + sweet potato starch as pore forming agent(PFA) with an addition of 10 mass%.20 mass%and 30 mass%.respectively. The starting materials were dry mixed.wet co-milled in a ball mill for 1 h.slip cast into cylindrical specimens with a diameter of 60 mm.and then calcined at 1 450℃for 3 h.With the increase of PFA addition.apparent porosity increases,and bulk density decreases.The influence of different PFAs on properties of the micro-pored LW CA_6 - MA aggregate was investigated.The achieved CA_6 -MA.by adding 30%sweet potato starch.has a porosity of 76.8%.bulk density of 0.78 g·cm~(-3) and median pore size of 1.90μm.