Anyone know about bitmac?

[BigTom85]

Most resin bonded gravels are not permeable at all. There are some systems for tree pits etc but they aren't the norm.

[Eleven]

ATTAK Z said:

Eleven said:

10mm bitmac is permeable though isn't it?

Who told you that ?

No one, just observation. Open structure, not much in the way of fines.

[Eleven]

BigTom85 said:

Most resin bonded gravels are not permeable at all. There are some systems for tree pits etc but they aren't the norm.

That was my understanding.

[ATTAK Z]

Eleven said:

ATTAK Z said:

Eleven said:

10mm bitmac is permeable though isn't it?

Who told you that ?

No one, just observation.

Well it shouldn't be permeable if it's correctly graded with the right amount of binder

[ATTAK Z]

ATTAK Z said:

Resin bound gravel is permeable so water will settle on the surface of the bitmac underneath. You've confirmed that the bitmac is already degrading. Imagine what frost action will do on a surface that is impermeable and is already breaking up.

To summarise - not a good idea

Edited to read 'resin bound' rather than 'resin bonded'

Edited by ATTAK Z on Monday 15th September 22:35

Please see edited post above ... sorry I was talking about 'resin bound' material not 'resin bonded' being permeable ... I've never used resin bonded gravel

[Eleven]

BigTom85 said:

Thats not so much a surface dressing, that looks like a buff resin bonded surfacing, similar to anti-skid or shellgrip.

And yes that would do the job nicely, but is around £12/m2.

Just spoken to a local firm who want £40m2. I am assuming they are being optimistic.

[BigTom85]

Eleven said:

Just spoken to a local firm who want £40m2. I am assuming they are being optimistic.

Maybe not! I've based that on anti-skid for highway works which is normally laid at 500m2 minimum.

[Eleven]

BigTom85 said:

Maybe not! I've based that on anti-skid for highway works which is normally laid at 500m2 minimum.

I need 150-160, which shouldn't be 3.5 times the price surely?

[BigTom85]

Eleven said:

I need 150-160, which shouldn't be 3.5 times the price surely?

Gut feeling is £25-30 sounds more reasonable.

[Eleven]

BigTom85 said:

Eleven said:

I need 150-160, which shouldn't be 3.5 times the price surely?

Gut feeling is £25-30 sounds more reasonable.

I've been doing some research today. I've spoken to a consulting engineer and a number of bonded drive people.

The engineer said that the drive (whilst he hasn't seen it) is probably not past redemption and can be sealed without needing to take it up. On the subject of a colour change he also said he'd had good success with bitumen bonded aggregates which is, as I understand it, surface dressing.

I have had varying answers from bonded and bound aggregate people. Unsurprisingly they all talk their own book. However one chap who does both said that he won't use bonded on drives because the aggregate gets torn out with turning wheels. Contrastingly, Addagrip who do both bonded and bound say that bonded is fine so long as we have fall and they will guarantee it for 10 years.

I have been quoted a huge spread of prices too.

I must say that for purely aesthetic reasons I am likely to head down the buff resin route one way or another.

[BigTom85]

Bitumen bound will NOT withstand the screwing of vehicles manoeuvring. Resin bound all the way. As he says, drainage needs to be spot on as water will sit on the surface.

Whereabouts in the country are you?

[Eleven]

BigTom85 said:

Bitumen bound will NOT withstand the screwing of vehicles manoeuvring. Resin bound all the way. As he says, drainage needs to be spot on as water will sit on the surface.

Whereabouts in the country are you?

Midlands,

We're thinking of going resin BONDED at the moment though, not bound.

[BigTom85]

Eleven said:

Midlands,

We're thinking of going resin BONDED at the moment though, not bound.

Yes. Resin applied to the surface and fine coloured aggregate scattered on top

[Eleven]

BigTom85 said:

Eleven said:

Midlands,

We're thinking of going resin BONDED at the moment though, not bound.

Yes. Resin applied to the surface and fine coloured aggregate scattered on top

Should I drop you a PM Tom? You're not far from me (about an hour or so).

I have been half tempted to get our regular ground workers to have a stab at it. How difficult can Araldite and grit be to lay?;)

[BigTom85]

Eleven said:

Should I drop you a PM Tom? You're not far from me (about an hour or so).

I have been half tempted to get our regular ground workers to have a stab at it. How difficult can Araldite and grit be to lay?;)

Feel free, not sure how I can help mind as I'm highways based, but if you want me to help specify something then let me know