tag:blogger.com,1999:blog-12389938.post5752054083601707347..comments2024-03-28T11:06:56.895-05:00Comments on PawPaw's House: ConcretePawpawhttp://www.blogger.com/profile/14959820068377494313noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-12389938.post-24079546531331561142007-05-11T17:55:00.000-05:002007-05-11T17:55:00.000-05:00One the truly amazing things about concrete was it...One the truly amazing things about concrete was it the secret of it was lost for something like 1500 years, only being rediscovered in 1824. "Portland" cement was named so because the "inventor" Joseph Aspdin, a bricklayer, thought it resembled the stone of Portland off the British coast.Anonymousnoreply@blogger.com