In order to solve the problem that the skid resistance of concrete pavement in tunnel deteriorates rapidly, which is easy to cause traffic accidents, the anti-skid rapid elevation technology of surfac
In order to solve the problem that the skid resistance of concrete pavement in tunnel deteriorates rapidly, which is easy to cause traffic accidents, the anti-skid rapid elevation technology of surfac
Lignin was used herein to prepare chemical grouting materials as replacements for petroleum-based epoxyprecursors. Demethylation, phenolation, and hydroxymethylation were conducted and the products we
