| 摘要 |
FIELD: manufacture of building materials. ^ SUBSTANCE: invention relates to cement compositions and can be used to manufacture of new types of cement used in construction as well as building mortars and concretes based thereon. Cement according to invention is composed of 30-40% dunite, 60-70% Portland cement clinker, and gypsum dihydrate in amount 3% of the weight of dunite/clinker mix when they are subjected to joint grinding on rod-type vibration machine for 10 min. ^ EFFECT: increased strength and reduced cost of cements at lower manufacture expenses. ^ 3 tbl, 5 ex |
