Concrete Walkway with Mosaic Inlay
Hi everyone! You've got yourself a newbie here. I'm looking for some advice on an outdoor mosaic project. I have a concrete walkway that my husband and I poured last summer. It has seventeen 6-inch diameter circular indentations in the concrete, which we created with the idea of filling them with mosaic inlays. I've worked with stained glass for years, but never with mosaic.
I've made two of the mosaics, using vitreous glass tile glued with white glue upside down to a piece of heavy kraft paper in the reverse method. The pieces of glass are extremely, ridiculously small - some as small as 1/4".
My question is, what material would you use to install and grout the mosaics into the concrete depressions? I feel like I've read many different ways I could do it. I've read that sanded grout is best for outdoor applications, but wouldn't be good for the tiny grout lines I've left. I'm worried about the small pieces getting shifted around in the process.
The depressions are about 1/4" deep. I live in Maine, so there's definitely a freeze/thaw cycle!
Any advice is appreciated - thank you!