Welcome :welcome1: to the Gauge, yamahammer.
Finally, another proponent of Durabond!
:-D:-D This stuff comes in various setting times, denoted by the number following the name - this is the setting time in minutes. While pre-mixed drywall compound is very easy to use, it's soft when set, making it easy to scratch or gouge, and it will re-soften when wet. I have used it for roads, but the Durabond works better. Applied too thickly drywall compound will crack, and even if it didn't, thick applications take too long to dry.
If you have some brick structures, drywall compound
is useful for creating a mortar effect: simply paint the building a suitable brick colour, and when the paint has thoroughly dried, use a clean rag over your fingertips to apply the compound over all of the brickwork. After it has dried, use another dry, clean rag to wipe the surface of the bricks - the "mortar" will be left in the grooves between the bricks.
Here is a couple of links to photos in the Gallery - click on the pictures to get an enlargement which better shows the mortar detail.
brickwork 1
brickwork 2
brickwork 3
Wayne