Comments on: Pavement choices http://materialsman.com/2009/04/pavement-choices/ Construction materials and bird watching anecdotes Wed, 18 Apr 2012 08:01:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: John http://materialsman.com/2009/04/pavement-choices/comment-page-1/#comment-585 John Mon, 08 Nov 2010 16:13:48 +0000 http://materialsman.com/?p=302#comment-585 Thanks Ian, I owe you one Thanks Ian, I owe you one

]]> By: Ian http://materialsman.com/2009/04/pavement-choices/comment-page-1/#comment-584 Ian Mon, 08 Nov 2010 14:35:54 +0000 http://materialsman.com/?p=302#comment-584 Well John Anthony, someone was asking me where you were the other day, now I know, but have forgotten who asked me. kinda understood were you're coming from, if you want to reduce time for trafficking the UK spec allows this immediately if a PTR is used. If you want to protect from frost then usually a strength of 2/3 N/mm2 will suffice. you could make cylinders or cubes and cure them on site this will give you a frost protection guide and if and when you get 8 N/mm2 I would say you could traffic the layer. this could be dangerous as it might take more than 14 days to get to 8N/mm2 or MPa as the EU makes us use. Any CBGM/HBM over 10MPa at 7 days lab cured needs pre-cracking at 3m intervals. Can't remember the temperature laying rules for laying but you can find them on. www.standardsforhighways series 800 of vol 1 of the MCHW Well John Anthony, someone was asking me where you were the other day, now I know, but have forgotten who asked me.
kinda understood were you’re coming from, if you want to reduce time for trafficking the UK spec allows this immediately if a PTR is used. If you want to protect from frost then usually a strength of 2/3 N/mm2 will suffice. you could make cylinders or cubes and cure them on site this will give you a frost protection guide and if and when you get 8 N/mm2 I would say you could traffic the layer. this could be dangerous as it might take more than 14 days to get to 8N/mm2 or MPa as the EU makes us use. Any CBGM/HBM over 10MPa at 7 days lab cured needs pre-cracking at 3m intervals. Can’t remember the temperature laying rules for laying but you can find them on. http://www.standardsforhighways series 800 of vol 1 of the MCHW

]]> By: John http://materialsman.com/2009/04/pavement-choices/comment-page-1/#comment-583 John Mon, 08 Nov 2010 14:10:40 +0000 http://materialsman.com/?p=302#comment-583 Ian, I am struggling with UK spec to here (Tashkent). HBM I read the advice as if over 6% cement (our spec) you can lay at 3 deg C. You do not need to consider freezing later and you can traffic once the PTR says so, or because it is crushed rock and has mechanical interlock. Cracking will occur thus you use crack inducers. You seem to see it different. Sorry we are stuck with a short time to complete, I am out of it with materials now, and the materials engineer we have is shit. Meanwhile the Russian Spec wants 14 DAYS. Need to get EOT and shorten this period or we are in shit. Ian, I am struggling with UK spec to here (Tashkent).

HBM

I read the advice as if over 6% cement (our spec) you can lay at 3 deg C. You do not need to consider freezing later and you can traffic once the PTR says so, or because it is crushed rock and has mechanical interlock. Cracking will occur thus you use crack inducers. You seem to see it different. Sorry we are stuck with a short time to complete, I am out of it with materials now, and the materials engineer we have is shit. Meanwhile the Russian Spec wants 14 DAYS. Need to get EOT and shorten this period or we are in shit.

]]> By: Ian http://materialsman.com/2009/04/pavement-choices/comment-page-1/#comment-198 Ian Fri, 12 Jun 2009 18:41:44 +0000 http://materialsman.com/?p=302#comment-198 What did my blog say about director types? why not performance designs? Well my director called me today as i was in HQ, well regional office as Inverness is now HQ. An aside, but in his carpeted premises I was instructed to deliver a talk on pavement design and the new European specs on concrete. Fine, but not to our graduates, as you can tell them anything, and it doesn't matter anyway for if you don't use the info imparted it's lost in two weeks, same for this audience but its agents to project managers so they have present knowledge which means better delivery and factual or f**ked. Directors! What did my blog say about director types? why not performance designs? Well my director called me today as i was in HQ, well regional office as Inverness is now HQ. An aside, but in his carpeted premises I was instructed to deliver a talk on pavement design and the new European specs on concrete. Fine, but not to our graduates, as you can tell them anything, and it doesn’t matter anyway for if you don’t use the info imparted it’s lost in two weeks, same for this audience but its agents to project managers so they have present knowledge which means better delivery and factual or f**ked.
Directors!

]]> By: Ian http://materialsman.com/2009/04/pavement-choices/comment-page-1/#comment-197 Ian Fri, 12 Jun 2009 18:29:36 +0000 http://materialsman.com/?p=302#comment-197 Well DMRB, typing that has just made me smile, good acronym for a pseudonym. Voting for a performance design gives me a profile of you, consultant type, product of a uni, revels in facts and figures, particularly if there's a published paper in it. Push the design boundaries when there's no risk for you. Bet you wear a tie every working day and classic value for money brogue shoes, in that your children will get wear from them? DMRB the most unlikely lad Well DMRB, typing that has just made me smile, good acronym for a pseudonym. Voting for a performance design gives me a profile of you, consultant type, product of a uni, revels in facts and figures, particularly if there’s a published paper in it. Push the design boundaries when there’s no risk for you. Bet you wear a tie every working day and classic value for money brogue shoes, in that your children will get wear from them?
DMRB the most unlikely lad

]]> By: David Matthew Rodney Bewes http://materialsman.com/2009/04/pavement-choices/comment-page-1/#comment-183 David Matthew Rodney Bewes Tue, 19 May 2009 20:41:42 +0000 http://materialsman.com/?p=302#comment-183 Let's make life interesting, go for the performance design. Let’s make life interesting, go for the performance design.

]]>