A cementitious product and method of modifying the properties of a low or medium density FRC product by providing a predetermined pore size distribution. The pore size distribution is obtained such that in critical zones of the distribution, the pore volume is substantially equivalent to or less than...http://www.google.com.au/patents/US20060288909?utm_source=gb-gplus-sharePatent US20060288909 - Durable medium-density fibre cement composite
