A formulation and method of producing a shaped cementitious article having either a reduced respirable size silica particle content or a low propensity to release air borne respirable silica or both. The formulation comprises cementitious material, a siliceous material and a low bulk density material. The density of the product is preferably 1.2 g/cm<3> or less and the low bulk density is preferably substantially calcium silicate hydrate. The applicant has found that with such a density and/or low bulk density material in the article, the product provides a substantially reduced amount of respirable size silica when cut.
申请公布号
WO0021901(A1)
申请公布日期
2000.04.20
申请号
WO1999AU00875
申请日期
1999.10.13
申请人
JAMES HARDIE RESEARCH PTY LIMITED;BLACK, ANDREW;CHEN, HONG;GLEESON, JAMES;PARKS, SEAN;KIRBY, NIGEL;MONEY, ERIK
发明人
BLACK, ANDREW;CHEN, HONG;GLEESON, JAMES;PARKS, SEAN;KIRBY, NIGEL;MONEY, ERIK