| 摘要 |
FIELD: building industry. ^ SUBSTANCE: method for preparing mortar involves preliminary treatment of small filling agent with hydrochloric acid solution and the following its stirring with Portland cement and water wherein glauconite sand as enrichment waste in phosphorite manufacture is used as a small filling agent and taken in the amount 67 wt.-%. The indicated treatment is carried out with 0.03-0.3% hydrochloric acid solution and the following washing out with water and dehydration. Time of this treatment is 5-10 min. Invention can be used in preparing mortars. Invention provides reducing content of natural radionuclides in mortar, decreasing treatment time of filling agent, enhancing limit of strength and compression limit values. ^ EFFECT: improved preparing method of mortar. ^ 2 cl, 2 tbl, 1 ex |
