When making exposed-aggregate architectural precast channel column covers, we've noticed that after abrasive blasting, the texture on the down face differs from that on the vertical face. What causes this, and what can be done to correct it?
We manufacture precast concrete site furnishings with fiberglass molds. We currently use a sticky-back foam on the flanges. But we are still having leakage at the seam. The forms are keyed and bolted together at a 3-inch spacing. Is there a material we can use in place of the sticky tape that will...
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