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Folkestone-Dover sea wall wash-out


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"...seriously though..."

How can the piling contractors be confident that this insitu technique does not allow ingress of salty sea water to

a) seriously weaken the mix and

B) initiate corrosion of the re-inforcement?

 

Can someone please explain?

 

dh

 

Is that what the Ail can is meant to achieve - ie. slow the ingress of the salt water and without air, rust can't form anyway.

 

I'm not sure that salt has ant great effect on the right concrete mix, as I have seen a number of coastal, port walls built with bags filled with dry-mix, stacked and simply wetted by the sea, to form lasting wall.  One that comes to mind is the little port at Sidmouth.

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For someone admitting to being a tiny bit bored only last week, you've gone well over the top today!

[i reckon it's about swanking off to the sweet little grandaughter - old joke: "Grandpa's Surprise Clifftop Picnic" by Eileen Dover]

:jester:

 dh

 

Far, Far, from the truth dh,       I have also heard, that Esops Fable's, are all true stories. :O .

 

Have you read this thread on Rmweb,       Red Telephone Boxes.

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Is that what the Ail can is meant to achieve - ie. slow the ingress of the salt water and without air, rust can't form anyway.

 

I'm not sure that salt has ant great effect on the right concrete mix, as I have seen a number of coastal, port walls built with bags filled with dry-mix, stacked and simply wetted by the sea, to form lasting wall.  One that comes to mind is the little port at Sidmouth.

 

Sid's mouth,maybe full of port,  Well, it is Friday night.

 

Please, don't ask technical Q's, I cannot answer !

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................    My mouth had a glass of Windemere Port pass through this evening  ...  very nice too.   :sungum:

 

Sid's mouth,maybe full of port,  Well, it is Friday night.

 

Please, don't ask technical Q's, I cannot answer !

 

..........   but it didn't supply the answer either  .....

 

..........  apologies for stressing the brain in after grandchild moments  .......  just recovering from 2 nights sleepover stress myself, so apology quite genuine  ...   :O  :O  :O

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  • RMweb Gold

The red machine - coupled behind the dumper - is an 1100 litre bowser; not that such knowledge (obtained from the Speedy Hire website) actually let's us know what it is for - but it would hold a reasonable quantity of tea of course.

"...seriously though..."

How can the piling contractors be confident that this insitu technique does not allow ingress of salty sea water to

1) seriously weaken the mix and

2) initiate corrosion of the re-inforcement?

B)

 

Can someone please explain?

 

dh

 

Edit to cope with typing

B) after a)

 

The contractors are experts at making concrete piles (by this sort of method) in salt water, it's one their specialities as they do a lot of harbour work.  So they no doubt use the right sort of concrete mix for a sea water environment.  The rebar should be 100% covered in concrete but presumably the galvanised (or stainless?) tube we saw helps to protect it in the worst locations although they don't seem to have had enough on site to have used it on every pile.  In any case presumably the rebar uses a type of steel which offers the best sort of corrosion resistance in this kind of environment?

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Very interesting 'insertion' sequence yesterday   -  thanks !

 

Do you know whether the boys are working weekends ?

 

Harking back to the memory card problems & the possibility that some cards might 'lose' images after several sequences of deletion & re-use   -    might one answer be to use the card once only & never delete the images ?

With 8GB SD cards available from £2.50 & with an ability to store hundreds of still pix, & cards available with much greater capacities, might this comparatively cheap form of storage, over & above your normal downloads onto internal & external hard drives, be a life-saver on occasion ?

Edited by helcion
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Very interesting 'insertion' sequence yesterday   -  thanks !

 

Do you know whether the boys are working weekends ?

 

Harking back to the memory card problems & the possibility that some cards might 'lose' images after several sequences of deletion & re-use   -    might one answer be to use the card once only & never delete the images ?

With 8GB SD cards available from £2.50 & with an ability to store hundreds of still pix, & cards available with much greater capacities, might this comparatively cheap form of storage, over & above your normal downloads onto internal & external hard drives, be a life-saver on occasion ?

 

 

Thanks for your post Mike,

 

Sunday's, off late,      there has been no work, presume,one day has to be aloted as a day of rest.

 

Saturday, there has been working parties, out on smaller site project's,  knock off time,around 1300/1400, Out shopping,with the Missus,after 1400.

 

Thanks for info,on card's.

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Next, for the cylinder,

 

The crane driver,was told to sling his hook,

over here.

 

26228197382_be5fa60d24_k.jpg

 by David Todd 2012, on Flickr

 

The concrete chute extension lengths' were fitted.

 

26294661186_70a858e1ca_k.jpg

 by David Todd 2012, on Flickr

 

25715727874_df491d2707_k.jpg

by David Todd 2012, on Flickr

 

25717833283_12a16ee7f4_k.jpg

 by David Todd 2012, on Flickr

 

 

25717793353_60367a7773_k.jpg

 by David Todd 2012, on Flickr

 

25715693774_28ed66186d_k.jpg

 by David Todd 2012, on Flickr

 

26294589016_81ed854a54_k.jpg

 by David Todd 2012, on Flickr

 

26320529135_35724dbaf4_k.jpg

 by David Todd 2012, on Flickr

 

 

 

 

 

 

Edited by David Todd
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Thanks for your post Mike,

 

Sunday's, off late,      there has been no work, presume,one day has to be aloted as a day of rest.

 

Saturday, there has been working parties, out on smaller site project's,  knock off time,around 1300/1400, Out shopping,with the Missus,after 1400.

 

Thanks for info,on card's.

 

Which is why, on site, Saturday is colloquially known as "Poet's Day".

 

Or possibly more correctly, P.O.E.T.S day...

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The site for unloading the wagon's,from the last delivery,has been cleared and placed behind the buffer stop's.

The next delivery, of material's is due,this coming Tuesday,12 April, 0730 arr. at Dover Priory.

 

No doubt, the dry spoil,nearest the offices, will be loaded and removed from the site.

Have to wait and see, what happens to the "wet" extracted spoil.

 

25719212233_214e138d5f_k.jpg

 by David Todd 2012, on Flickr

 

26296037396_2d48a328d7_k.jpg

 by David Todd 2012, on Flickr

 

25719232803_d708dceab1_k.jpg

 by David Todd 2012, on Flickr

 

26049171580_50c0fb037f_k.jpg

 by David Todd 2012, on Flickr

 

 

 

 

 

 

 

 

 

 

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We, have now caught up with yesterday's visit to the site, no more photos.

 

There is no plan to visit the site today.

 

an email. late last night, requesting the g/children, stay,another night,till Sun.AM.

They can't find a hotel, to upgrade to.

 

I maybe sleeping,through the next week, to regain,energies lost, my older batteries,don't last long these day's.

Edited by David Todd
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Fascinating stuff to look at, David.

The silt-removal unit will be to remove the water that accumulates at the top of each tube, having been displaced by the concrete being poured in. It will also be used to clean the water that's been used to clean the drilling tools. The water can then be discharged in to the sea. The bowser will be to carry water for cleaning from the nearest hydrant ( I watched them do this when the new toll-plaza was being built next to the A20)

The tube looks as though it could be stainless; I don't know what the criteria would be for using it or not. The steel for the rebar could be Corten, which oxidises on the surface, the oxide then forms a protective layer- it's the stuff that was used for the 'Angel of the North' and, more prosaically, for shipping containers.

Concrete will set under water, as the Romans proved two thousand years ago; cement setting is the result of a chemical reaction, not a drying process. The risk to any cement or concrete in wet conditions is mainly through washout of the finer particles of sand and cement by water.

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Ointment??   .................

 

Oh so the usual ointment wont work then?

 

..............    not seen David mention any of that sort   .............   ummm   .............   maybe that's what is in that red cart??  ...............

 

.....................................                ..............................           ..........................

 

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,                that's an awful load of ointment    ...........................                     ...................            :scratchhead:         ............      :O  :O  :O

 

....................................                  I prefer the water truck, for use of rinsing things out    ......     :scared:     ........     :O  :no:  :no:   ......   on the other hand, that is quite a volume in a trailer that SIZE!!

 

J

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Thanks for all the pictures and giving your time David. Enjoy the break and we look forward to your report on Tuesday!

 

Thanks for your post.

 

My calendar has changed somewhat.

 

I have some photos to post, from Sunday,while the site was at rest.

 

Also, some photo's from a walk from the top of Shakey,along the cliff top and down to Ad Pier.

 

I cannot be at the site Tomorrow.

Edited by David Todd
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These are Sunday's (10 04 16).

 

I will let you, determine your own orientation, of the piles.

 

25764467113_e58abf3e0e_k.jpgP1330993 by David Todd 2012, on Flickr

 

26094341860_3ba8910e67_k.jpgP1330995 by David Todd 2012, on Flickr

 

26094329770_8cd7c126d3_k.jpgP1330997 by David Todd 2012, on Flickr

 

26341247286_1c9ca9e3b2_k.jpgP1330998 by David Todd 2012, on Flickr

 

26341241936_a1bb7b1beb_k.jpgP1330999 by David Todd 2012, on Flickr

 

26094312970_0093eeeeca_k.jpgP1340001 by David Todd 2012, on Flickr

 

26300923551_fabfdaee37_k.jpgP1340002 by David Todd 2012, on Flickr

 

25762302964_5f92b130a9_k.jpgP1340004 by David Todd 2012, on Flickr

 

26367129495_5643bddabf_k.jpgP1340005 by David Todd 2012, on Flickr

 

26274763912_85879a7fb1_k.jpgP1340006 by David Todd 2012, on Flickr

 

26341198866_f10c06f81e_k.jpgP1340007 by David Todd 2012, on Flickr

 

26094265760_0bec1605f8_k.jpgP1340009 by David Todd 2012, on Flickr

 

26274703882_24b07de9c8_k.jpgP1340016 by David Todd 2012, on Flickr

 

26094218790_fa549b0dfd_k.jpgP1340017 by David Todd 2012, on Flickr

 

26094213950_1f83ad754f_k.jpgP1340018 by David Todd 2012, on Flickr

 

26341129666_33133619b9_k.jpgP1340019 by David Todd 2012, on Flickr

 

25762213064_d06ffa2d89_k.jpgP1340020 by David Todd 2012, on Flickr

 

End of Sunday's photos.

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