The compsns. which allow a reduction in the proportion of water used and give concrete with reduced porosity and increased strength and durability, consist of aq. solns. contg. 0-2 vol.% sodium dodecyl sulphonate and 0-5 vol.% acetone, the final pH being adjusted to 7.0. (Reissue of the entry advised in week 9320 based on complete specification)
L02 (Refractories, ceramics, cement – includes manufacturing methods, limes, soil preparation for (road) building, magnesias and slags, cements, mortars, concretes, abrasives, thermal or acoustic insulation (non)oxide ceramics and ceramic composites, but not brick making, concrete mixers or casting or potters wheels (C04).)