How to clean and repair concrete?

over the years dripping water and heavy rain has washed away the top layers of the concrete so resurfacing is not the answer just yet so my question is how do repair this with out cutting out this section which also is out of the question and what cleaning product would I use to clean?

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Comments

MitchellMc

Hi @r23on,

If this is a drainage point that will continue to experience damage, then you might like to simply place a concrete paver over the area. That would neaten the appearance and prevent further damage. Alternatively, it would be relatively easy to use some repair mortar to screed over the top and restore the concrete finish. I suspect that if it's taken years for this damage to occur, then your repair would also last a considerable amount of time.

Were you looking for a cleaning product to remove the algae growth between the aggregate? If so, I'd recommend blasting it off with a high-pressure washer if you have one and/or using some 30 Seconds Outdoor Cleaner.

Please let me know if you have further questions.

Mitchell

Brad

Having been to the trade expo this week I saw this product...

Concremate

There is also Multfill that comes in grey but for a large project being listed as 600G only it is more expensive than Concretemate in the larger sized packs if you need multiple packs. It is ready mix though.

You could clean it with Berger Jet Dry Active Clean if your worried about grease being present.

I would use some formwork on the side and use a fairly wet mix to allow self leveling. From the photo it looks like there is enough surface roughness to give a good grip, if it was smooth I would drill some holes at an angle to hold it in which is probably over engineering it.

MitchellMc

https://www.workshop.bunnings.com.au/discussion/comment/22878#Comment_22878

Neat product, isn't it, @Brad! I, too, spent a considerable amount of time at the Earl's stand checking out all their products.

Mitchell

Noyade

https://www.workshop.bunnings.com.au/discussion/comment/74104#Comment_74104

I tried Lanko 136 on a a shallow piece of chipped driveway - mixed results.

Would Concretemate have been a better choice?

MitchellMc

https://www.workshop.bunnings.com.au/discussion/comment/100575#Comment_100575

The Concremate appears to be pretty good stuff, but it's hard to tell whether it would have performed better for your job, @Noyade. Are you driving over this edge in a car, or has it just fallen off? I would have imagined the 136 would have worked fine for this purpose unless it was bearing the weight of a car. For the Concremate to work here, you'd need to drill several holes at an angle into that edge for it to bite into.

Mitchell

Noyade

https://www.workshop.bunnings.com.au/discussion/comment/117160#Comment_117160

Afternoon @MitchellMc

Yes, a vehicle drives over this regularly and the left front tyre is usually turning on it as well. And yes, it's the edge that's the only problem. Thanks for the tips. 👍

It was chipped off by an Origin Energy cheery-picker vehicle/truck with the hydraulic stabilizing legs. When one leg retracted it caught the edge.

Brad

https://www.workshop.bunnings.com.au/discussion/comment/74104#Comment_74104

It looks to have many uses @MitchellMc Adelaides day fell on a day I have a fixed afternoon job so I couldn't stay as long as I would of liked too.

@Noyade 85mpa for Concretemate is stronger than most concrete, for a driveway repair I would drill some holes to give it some extra staying power.

r23on

https://www.workshop.bunnings.com.au/discussion/comment/22877#Comment_22877

Hi @MitchellMc

We sold up and moved out of Vic and headed to the NT

The photo shows years of water continuing to flow from the air con outlet. Here in Darwin everything is run through the wall as the houses is built with block due to cyclones etc hence most houses are like a bomb shelter well constructed so with the amount of water eventually breaks down concrete.

As Brad has suggested i was thinking about. Thanks for your reply

r23on

https://www.workshop.bunnings.com.au/discussion/comment/22878#Comment_22878

Hi @Brad

thanks for the reply since moving here I have been flat out doing reno work and had hoped to been able to get this job down before the wet season sets in but I think I have missed that window

I have considered the concretemate after checking out the web site. I will have to have a look at the and I will have to follow up on the cleaner. Have you used it before?

regards

r23on

https://www.workshop.bunnings.com.au/discussion/comment/22878#Comment_22878

Hi @Brad @MitchellMc

Concermate appears to have done its job at this stage we will see how well it stands up to constant water dripping on it. mixing in a small batch and the working is hit and miss

I did two small arrears both had there issues in working the product

EricL

https://www.workshop.bunnings.com.au/discussion/comment/74170#Comment_74170

Hi @r23on

Thank you very much for posting that update. The repair looks good and I reckon it should last several years before you need to patch it up again.

Eric

Brad

https://www.workshop.bunnings.com.au/discussion/comment/100609#Comment_100609

Experts always make those jobs look easy.

Clients partner is trying the degreaser to get his sisters car oil leaks of the driveway.

r23on

https://www.workshop.bunnings.com.au/discussion/comment/117193#Comment_117193

the trick to this is to keep the area moist i did not so it was harder to work in the day i made a water mix

i would be interested in hearing how the degreaser went

Brad

https://www.workshop.bunnings.com.au/discussion/comment/126755#Comment_126755

She has used the degreaser, I haven't seen the results because the car was parked over the driveway.

The lack of compaints is a good sign though.

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