.......some stuff........cement.......
.......mortar in bricks , .......have a 75 year , strength limit , and then it turns back into sand .....and shock horror , gets blown away by the wind ....and worse still a small earth quake , or strong puff of wind , will push it into a pile of bricks ....
So go around and have a close look , as you are walking past every brick building , the older brick walls or buildings will need re-plastering to save them , and other peoples lives ....
cement has improved in quality , from what was made in the day , 75 years ago , and the strength now exceeds 100 years , and then give , every one a big scare , when all the power stations and dams , road ways , fall over ...
and have a happy easter
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