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CornwallPhil
26-02-2012, 21:37
Some photos from my expedition to find the remains of Hor Point CHL Radar Station. While there the sea mists rolled in!
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At the end of the war the army blew up the station letting the concrete debris roll down the cliff slope towards the sea! This slab of reinforced concrete is a foot thick!

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Some of the remains had this fine cement covering. Can anyone explain what and why please?

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A securing ring still in situ on the station site.

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This piece of concrete obviously was attached to some piece of equipment!

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The view down the slope from the site of the radar station to where a pillbox was sited to the right of the grassy area just before the final cliff into the sea. The bulk of the radar station was on a flat plateau out of shot to the right and behind.

For a more detailed look at what I discovered
http://www.youtube.com/watch?v=6dm9J3z2Bz8

PETERTHEEATER
01-03-2012, 08:55
Some of the remains had this fine cement covering. Can anyone explain what and why please?

The main structure would have used a relatively coarse mix of cement, sand and aggregate resulting in a rough surface not too resistant to the weather. It looks as if some surfaces were 'rendered' with a quality mix of sand and cement to give a fair face and a smooth surface.

CornwallPhil
01-03-2012, 20:42
Thanks Peter. Although I've seen it before it's not too common among Cornish remains (or just hasn't survived as well!) In a number of cases buildings, pillboxes etc were covered with local stone to help disguise them into the landscape.

PETERTHEEATER
02-03-2012, 09:48
The coastal location with salty air has a way of attacking concrete if unprotected. Nowadays rigidly controlled mixes are specified and each batch tested and epoxy contents too. I'm no expert but saw the Saudi/Bahrain causeway under construction and learned a lot from the civil engineers on that job (drinking buddies:))