Crack-Pac® Injection Epoxy | Simpson Strong-Tie- epoxy to fill cracks in concrete ,The Crack-Pac injection epoxy is designed to repair cracks in concrete ranging from 1/64" to 1/4" wide in concrete walls, floors, slabs, columns and beams.Epoxy System to Fix Cracks in Concrete | Home Guides | SF Gate可以如何改进答案?