作者: O Nissan Chem.Ind.Ltd Koinuma , Takahiro C , Toyoji C , Yuriko C , O Nissan Chem.Ind.Ltd Obitsu
DOI:
关键词:
摘要: An agent and method for modifying a surface layer of hardened cement structures or substrates with use the which comprises in specified ratio alkali silicate solution sodium naphthalenesulfonate formaldehyde condensate. Said has an excellent stability remarkable permeability into structure to form deeper strengthened thereon.