Hi All
We had a new concrete driveway laid about 5 months ago. Coloured concrete 32mpa, 120mm thick, reo throughout with saw cuts every 3m approx. After it had cured for around 6 weeks (with no use) we sealed it with Crommelin Diamond Coat. Looked fantastic.
Now it still looks fantastic when dry, but when it rains the surface appears to have a 'spiderweb' cracks over the whole surface. There is also one legitimate crack across the width, which from the edges, appears to go through the full thickness.
After a day of rain the crack lines disappear - but when you compare to other new driveways in the area, the others seem to soak in water, while ours seems to repel water more.
Question is - are these cracks (either major one or spiderweb cracks) a concern and is there anything I can do? e.g. different sealing product, crack filler etc?
See attached photos taken when first wet (showing cracks) and completely wet (cracks not visible) but in both cases water largely sitting on surface, not soaking in. When dry it looks normal.
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Cheers