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toubab1020
12314 Posts |
 Posted - 10 Jul 2009 : 13:45:22
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Snuggles.
That's an interesting discovery that you have identified here,cost is the greatest concern,your last sentence sums up all the problems of The Gambia and all other countries at the moment.Any links that we could view about this stuff?. |
"Simple is good" & I strongly dislike politics. You cannot defend the indefensible.
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snuggels
960 Posts |
Posted - 10 Jul 2009 : 13:55:36
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| Sorry toubab I dont have the link I just googled it under Road Construction. I belive it was a South African country that developed it |
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snuggels
960 Posts |
Posted - 10 Jul 2009 : 15:07:50
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I think I will send this new technology for building roads to the transport department in Gambia maybe they are not aware of it?
Anyone got any info on where to send it? |
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kiwi
Sweden
662 Posts |
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toubab1020
12314 Posts |
Posted - 10 Jul 2009 : 18:52:24
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quote:
Originally posted by kiwi
Can´t really figure out what role the Spanish ARENA UNI-LEX Group plays in this business.
According to company´s home site it is a commercial property finder offering land and plots in Spain and some other countries.
Does the company know anything about railway construction?
http://www.arenagroup.es/eng/home_arena.html
http://www.arenagroup.es/eng/suelo.asp
Opps.... I and others appear to have fallen into the trap of believing everything we read in the papers is true,it may well be and there again it may not be. Thanks Kiwi for your research, it APPEARS that this topic is a dead  duck,unless some learned member  can explain what this Spanish company are offering.I was really getting into this discussion in the absence of the "Regulars" and their two favorite topics,a bitter blow indeed,SNUGGLES wouldn't bother to write you letter yet !! |
"Simple is good" & I strongly dislike politics. You cannot defend the indefensible.
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snuggels
960 Posts |
Posted - 10 Jul 2009 : 20:29:28
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quote:
Originally posted by kiwi
Can´t really figure out what role the Spanish ARENA UNI-LEX Group plays in this business.
According to company´s home site it is a commercial property finder offering land and plots in Spain and some other countries.
Does the company know anything about railway construction?
http://www.arenagroup.es/eng/home_arena.html
http://www.arenagroup.es/eng/suelo.asp
Maybe Im missing something But I dont see what this has to with building Railways or Roads in Gambia? |
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njucks
Gambia
1131 Posts |
Posted - 10 Jul 2009 : 23:07:31
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quote:
Originally posted by snuggels
..................... To really open up the country what is needed is a decent road from Banjul to George Town.
Snuggels/all,
i think there is already a good raod from Banjul to Janjangbureh (George Town). all you have to do is cross the ferry and its a free ride on the north bank.
the south bank road is also currently being built.
i think the point here is Mass Urban Transport. having 14-passenger mini vans to transport 10-25,000 (and increasing) people everyday to work is not sustainbale. in fact all the major roads have become congested due to the huge number of vans and private vehicle on the highway. taxi car parks are becoming less available in serrekunda, banjul and every major town.
for most commuters, travelling to work in these vans is a headache with aggressive ''appratentees'', dangerous drivers breaking up the routes to charge people multiple fares etc.
there has to be an alternative for mass urban transportation. even discussing the options is progressive. |
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toubab1020
12314 Posts |
Posted - 11 Jul 2009 : 00:34:44
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quote:
Originally posted by snuggels
quote:
Originally posted by kiwi
Can´t really figure out what role the Spanish ARENA UNI-LEX Group plays in this business.
According to company´s home site it is a commercial property finder offering land and plots in Spain and some other countries.
Does the company know anything about railway construction?
http://www.arenagroup.es/eng/home_arena.html
http://www.arenagroup.es/eng/suelo.asp
Maybe Im missing something But I dont see what this has to with building Railways or Roads in Gambia?
It appears nothing at all, KIWI did some research on this company and found out that their experience apparantly is in selling plots of land etc. there is no mention on their website of railway involvment,the first posting in this topic was one that I picked up from the Daily Observer newspaper which spoke of a railway project,(http://observer.gm/africa/gambia/article/president-jammeh-receives-railway-design )
I expanded on that assuming that the newspaper article was factual, the research by KIWI APPARENTLY shows that this is not the case.Dispite that as NJUCKS states in the post of 10/7/09, "there has to be an alternative for mass urban transportation. even discussing the options is progressive." In other words even from a confused starting point the discussion is still valid,so lets go with that.
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"Simple is good" & I strongly dislike politics. You cannot defend the indefensible.
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snuggels
960 Posts |
Posted - 11 Jul 2009 : 00:53:26
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Njucks
I didnt know there was such a good road the other side of the river going up country from Banjul to George Town. I have only traveled the road from Banjul-Brikama to George Town. Which is not a good road as you may well know and that was the point of where I was comming from.
So if the road as you say is so good I take back every thing I have said about opening up the country. Because it appears it has already been done. ummmm didnt know that. However i do think upgrading the Brikama route would also benifit the country
I agree all options have to be on the table for transportation of people and goods. My point was that roads are the cheapest option.
There is the saying You have to cut your cloth according to your needs. And has been said befor it all NEEDS money.
So time will tell If ever |
Edited by - snuggels on 11 Jul 2009 02:13:03 |
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snuggels
960 Posts |
Posted - 11 Jul 2009 : 01:09:19
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Toubab
I read the artical in the Observer and thats what started me of on the high cost of railways against other means of transportation.
I also read Kiwis threads and as you said i also couldnt see any reference to our subject matter. So it just confused me.
Alls well that ends well |
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toubab1020
12314 Posts |
Posted - 13 Jul 2009 : 23:36:24
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NO Bantaba in Cyberspace in Norway then 
This from the letters in the D.O. someone like me who did not do research 
Link:http://observer.gm/africa/gambia/article/i-am-proud
I am proud
Africa » Gambia
Friday, July 10, 2009
Editor,
Allow me to express my profound gratitude to our beloved President. I was very glad when I read the news about the railway plans. Allah is the must omnipotent and will always guide him.
assan278@yahoo.com
Author: Assan in Oslo, Norway |
"Simple is good" & I strongly dislike politics. You cannot defend the indefensible.
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Edited by - toubab1020 on 13 Jul 2009 23:39:27 |
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jambo
3300 Posts |
Posted - 14 Jul 2009 : 10:50:12
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| better roads would help and in places were it is needed a new road, barra to albreda?!?, more buses, or bigger buses would help get the country moving. |
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snuggels
960 Posts |
Posted - 01 Aug 2009 : 20:41:35
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I have done a bit more research on Polyma Road construction as against conventional construction methods (see below) My thanks goes to SAB for pointing me in the right direction and this information will now be forwarded to the apprpopriate department in Gambia and maybe help in cutting there costs in road building and thus exstending there budget be able to build more roads.
TECHNICAL NOTES
Why Stabilize/Recycle? / Road Construction
Insitu stabilization of existing roads is a technology that is widely
Understood and practiced. Road managers responsible for the maintenance and
Upkeep of existing networks are well aware of the advantages, both in time and direct cost, that insitu stabilisation can provide.
When designed correctly and competently built, insitu stabilisation will more often
Than not, provide the best whole-of-life cost over traditional reconstruction methods.
Sustainable Development?
There are already sufficient skills, technology and experience to design roads
That preserve our non-renewable resources. Processes such as insitu stabilisation
Have been at the forefront of sustainable development for some time whether
People realised it or not. The use of innovative stabilising binders has also helped
Minimise our reliance on diminishing natural resources.
We should be actively engaged in shaping the future of the road construction industry towards best practice for sustainable development rather than relying on historical methods and approaches that only partially addressed the real issues we face today and into the future.
Savings of thousands of kilometres of truck movements for importing materials will
Also generate a considerable benefit for the structural integrity of the existing road
Network besides reduced traffic disruption, delays and inconvenience to the
[b]Community and businesses.
Why Polyroad?
Polyroad contains a unique insoluble polymer that does not degrade under normal
Road construction situations. This ensures roads can be protected from moisture
Ingress and deliver the desired design life.
Polyroad is suitable for a large variety of road and select fill zone materials
Using conventional stabilising equipment. Polyroad can be incorporated into new
Construction projects and rehabilitation/recycling of existing roads.
Polyroad has continued to deliver highly cost-effective long term solutions for road
Managers
Polyroad stabilised roads are designed to preserve the existing dry strength road properties and resist the ingress of water which is the major cause of road failure. Polyroad stabilisation achieves this outcome by a process of 'internal waterproofing' of fine grained particles by way of incorporating an insoluble dry powdered polymer.Polyroad has been incorporated into paved roads since 1988.
Polyroad stabilisation has been found to significantly reduce the need for any form of future maintenance and offers a highly competitive whole-of-life-cycle cost scenario for all road owners.
Polyroad is manufactured by Polyroad Stabilising a division of Polymix Industries Pty Ltd
The design of Polyroad stabilised roads is to preserve the existing dry strength road properties and resist the ingress of water which is the major cause of road failure.
Polyroad consists of an insoluble polymer thermally bound to an 'inert fine carrier', typically flyash. The polymer encapsulates the flyash rendering the flyash inert and does not react chemically in the stabilisation process. Hydrated lime is added to the polymer-coated carrier but is not coated with the polymer. The lime's function is to flocculate and prepare clay particles for adhesion to the polymer rather than generate pozzolanic cementitous bonds.
Polyroad binder types are dependent upon the plasticity index (PI) of the parent material to be stabilised as follows:
1. Polyroad PR100 is 100% polymer-coated fine inert carrier, spread at a rate of 1%, and is used with materials that are non-plastic.
2. Polyroad PR21L is spread at a rate of 1.5%, containing 67% polymer and 33% hydrated lime, and is for materials with a PI of 12% or less. The 33% of lime in the blend is only to open up clay plates to then be coated with the polymer - not to perform pozzolanic reactions as typically associated with lime stabilisation.
3. Polyroad PR11L is spread at a rate of 2%, containing 50% polymer and 50% hydrated lime, and is for materials with a PI of 12% to 20%. Again the lime is only required to break open the clay plates for polymer attachment.
Polyroad's ability to perform without road misshape or maintenance repair to date, is predominantly a result of no plastic deformation occurring within the road because of the 'internal' waterproofing of fine grained particles that Polyroad provides.
Physical benefits:[/b]
Suitable for a large variety of road rehabilitation and road construction conditions
„X Suitable for many different materials - pavement gravels and subgrade materials
„X Suitable with conventional stabilising equipment and rollers
„X Polyroad polymer is insoluble and has not degraded in the field to date (approximately 16 years)
„X Enhanced pavement material strength while remaining flexible
- Not known to produce cracking
„X Maintains moisture equilibrium once compacted
- Pavement strength maintained due to no wetting up of fines
- Even if sprayed seal and/or AC has oxidised and cracked
„X Able to be carried out in cold weather
- Does not involve chemical reaction
„X Can achieve compaction drier than normally practiced
„X Able to be tyned/remixed if initial compaction did not achieve specification
- Re-compaction and final trimming not affected by time constraints
„X Polyroad PR11L, PR21L and PR100 are available in 20 kg bags, 1 and 1.5 tonne bags and bulk road tankers (including B-doubles)
Environmental Benefits:
„X Reduced demand on new road material resources and reduced haulage on existing road system
„X Recycling of industrial by-products
„X Reduced road user delays with a high production stabilising technique
Financial Benefits:
„X Over 30% + saving on conventional construction
„X No known maintenance costs to date (other than cyclic reseals)
Further reading search the web for GEOSYNTHETICS
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Edited by - snuggels on 01 Aug 2009 20:47:29 |
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toubab1020
12314 Posts |
Posted - 01 Aug 2009 : 22:53:09
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Snuggles.I tried to get a link to Polymix Industries Pty.Ltd,but failed got phone numbers addresses but no website, I would have expected it to be a big company,what I did find was an Australian "Care Authority" a sort of Quango meeting place for those companies interested in this type of road construction.
Looks interesting enough but why hasn't such technology taken off in a big way? how much is this Polymer mixture that effectivly sticks loose bits together ? where can you buy the stuff? practical things like that.
http://www.auststab.com.au/
Sounds like a Gordon Brown idea to me (i.e. If it looks too good to be true it probably is !)
What does this quote taken from your piece mean Snuggles? "The 33% of lime in the blend is only to open up clay plates to then be coated with the polymer - not to perform pozzolanic reactions as typically associated with lime stabilisation."
I am not critical of what you are discussing but just asking why this means of road sealing is not world wide news with roadbuilders and why there is still the very strong grip on the tar and stone based roads that are accepted as the norm for a good road,the Polymer idea would appear ideal for dirt road sealing
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"Simple is good" & I strongly dislike politics. You cannot defend the indefensible.
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snuggels
960 Posts |
Posted - 01 Aug 2009 : 23:49:51
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Toubab
"I tried to get a link to Polymix Industries Pty.Ltd,but failed got phone numbers addresses but no website, I would have expected it to be a big company,what I did find was an Australian "Care Authority" a sort of Quango meeting place for those companies interested in this type of road construction."
You found out a bit more than me Toubab
" where can you buy the stuff? practical things like that.
http://www.auststab.com.au/"
I dont know someone will have to do more homework
"What does this quote taken from your piece mean Snuggles? "The 33% of lime in the blend is only to open up clay plates to then be coated with the polymer - not to perform pozzolanic reactions as typically associated with lime stabilisation."
That was taken from the technical notes as Im not a scientist Im at a loss as much as you as to what it means
"I am not critical of what you are discussing but just asking why this means of road sealing is not world wide news with roadbuilders and why there is still the very strong grip on the tar and stone based roads that are accepted as the norm for a good road,the Polymer idea would appear ideal for dirt road sealing"
I agree its the first I have heard of it. Especially in places like Gambia with dirt roads it appears as you say would be ideal Thats why I was interested |
Edited by - snuggels on 02 Aug 2009 02:21:15 |
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