A ENVIRONMENTAL-FRINDLY ULTRA SUPER EARLY STRENGTH CEMENT AND A ENVIRONMENTAL-FRINDLY ULTRA SUPER EARLY STRENGTH MORTAR CONTAINING THE SAME

摘要

The present invention relates to a rapid-speed steel pavement and a rapid-speed steel pavement mortar containing the same. The present invention relates to a method of manufacturing a high speed steel pellet, comprising the steps of mixing an additive and cement, wherein the cement is blast furnace slag cement, and the additives include gypsum, activated carbon, phosphate, calcium silicate, kaolin and waste wood powder, Wherein the amount of the gypsum is 10 to 20 parts by weight, the amount of activated carbon is 30 to 40 parts by weight, the amount of the phosphate is 5 to 10 parts by weight, the amount of the calcium silicate is 5 to 15 parts by weight per 100 parts by weight of the total phosphate, 15 parts by weight, and the waste wood powder is mixed in a weight ratio of 3 to 10 parts by weight. According to the present invention, the cement having shrinkage-reducing performance by mixing additives can be produced by rapidly evaporating water during condensation at the initial stage of curing to shorten the speed of condensation. In the case of drying after condensation, It is possible to prevent cracking due to rapid drying by delaying the drying time, and it is possible to obtain a sufficient strength in a short period of time, so that it has excellent physical characteristics and durability in relation to strength and can repair the damaged part of the cultural property, Can be restored.