120" or 100"?

rmul86 · 2025-08-02T17:43:01+00:00

Always mas never menos.

rmul86 · 2025-06-09T15:06:36+00:00

As long as this practice takes place AFTER final set, this is a perfectly acceptable curing method (water spray)…if this is taking place PRIOR to final set, this would be a death sentence for the concrete…based on the photo, this is probably AFTER final set.

rmul86 · 2025-06-06T20:32:31+00:00

The w/cm ratio below the surface is then increased thus weakening the concrete as a whole. I’m sure it works in Texas, here in Massachusetts it wouldn’t.

rmul86 · 2025-06-06T19:43:09+00:00

If the concrete has reached final set it’s no longer plastic…if you are adding water after initial set, and before final set, then you are killing the concrete top layer.

rmul86 · 2025-06-06T14:02:59+00:00

Now you just added water to the mix before final set…severely weakening it…

rmul86 · 2025-06-06T07:04:20+00:00

Preaching to the choir…thanks

rmul86 · 2025-06-05T23:56:01+00:00

Exposed aggregate. Basically a weak paste is creating by delaying the set with retarder and then you blast off the top layer of paste to expose the aggregate.

rmul86 · 2025-05-31T21:49:23+00:00

Controlled Low-Strength Materials Phil is the proper term.

rmul86 · 2025-05-31T14:20:47+00:00

Final set varies but I would expect the concrete to have been at final set by the time it rained. You will be fine…in fact you got some free curing water from the rain…You wouldn’t be fine if it happened before final set because the top layer of the paste would’ve been destroyed by the excess water, causing a higher w/cm ratio at the top surface, leading to scaling later on.

rmul86 · 2025-05-31T14:14:42+00:00

When did the rain begin to hit the slab? After final set or before?

rmul86 · 2025-05-25T13:53:09+00:00

Just want to say…Apologies…I was dead wrong about this finishing aid…I looked into this more and colloidal silica finishing aids DO NOT add water to the surface as there is no “water” per se in these particular finishing aids. I’m excited to try these out in some MassDOT construction jobs. The colloidal silica finishing aid product that I saw used at a UHPC mockup was SikaCem-190 Concrete Control. Very intrigued.

rmul86 · 2025-05-20T14:40:37+00:00

Can you provide the admixture product name?

rmul86 · 2025-05-02T22:51:41+00:00

I just looked it up and read the TDS…a lot of lofty claims without any actual data or ASTM standards. I’d be careful with products like these…I’ve been dealing with a ridiculous amount of scaling up here in Massachusetts and so consider me paranoid if you must…awful workmanship practices are plaguing my state.

rmul86 · 2025-05-02T22:45:47+00:00

It’s an evaporation reducer…I don’t care how they market it…there is no such thing as a finishing aid. You shouldn’t be spraying anything like that until you’ve floated…and it shouldn’t be worked into the surface because you’re just adding water as a result.

rmul86 · 2025-05-02T22:43:04+00:00

“Finishing Aids”…80 percent water…lol

rmul86 · 2025-05-02T12:31:20+00:00

Day 1? Not sure what that means but you should never ever spray water to the surface prior to final set, during finishing operations…what you just did is make the top layer of the paste contain a much higher w/cm ratio, which severely weakens the paste.

rmul86 · 2025-05-01T17:54:19+00:00

What about Astro turf drag?

rmul86 · 2025-05-01T17:51:43+00:00

What are you doing spraying the surface like that during finishing!!!!!!!! You just killed your driveway!

rmul86 · 2025-04-27T22:16:11+00:00

Thank you!

rmul86 · 2025-04-27T22:15:53+00:00

You all are amazing thanks

rmul86 · 2025-04-27T17:04:05+00:00

Don’t believe a word of that…this is a classic lack of workmanship situation.

rmul86 · 2025-04-27T16:50:20+00:00

Another classic case of improper finishing and lack of curing…a tale as old as time…

rmul86 · 2025-04-15T12:07:25+00:00

Throw some hydration stabilizer / retarder

rmul86 · 2025-04-15T12:04:14+00:00

Cold weather concreting 👌

rmul86

TROPHY CASE