XP T47-763-1:2012 报废轮胎（ELT） 破碎轮胎的密度、孔隙率和空隙率的测定 测量方法和测试协议 第1部分：基于水比重法的方法（充满状态的破碎轮胎）
End of life tyres (ELT) - Determination of density, porosity and void ratio of shredded tyres - Method(s) of measurement and test protocol(s) - Part 1 : method based on water pycnometry (shredded tyres in the abounded state)