Patent ID: 9260347
Filing Date: 2016-02-16
CPC Classification: C04B,Y02A

Claim Text:
1. A fiber reinforced cement-based composite comprising: a cement material; a water having a water to cement weight ratio greater than one thereby forming a cement matrix; an air void structure system having air pores in the range of 0.2-0.7 mm formed due to air entrainment within said cement matrix; a lightweight aggregate each having a diameter less than 200 μm, said lightweight aggregate having air or inert gas disposed within said aggregate, a density of said aggregate ranging from 200-900 kg/m short randomly distributed fibers having a volume fraction of less than 4% by volume fraction, said fibers having a diameter between 10 and 50 μm and a length between 6 and 12 mm; super fine grade vermiculite with particle size less than 1.5 mm, a vermiculite to cement weight ratio being 20 to 40% of cement; a bonding agent having a bonding agent to cement weight ratio lower than 10%; and a superplasticizer and viscosity modifying agent for rheology control.