FIELD: building materials. SUBSTANCE: method involves inoculation of the suitable an aqueous nutrient medium with the strain S-130 of gram-negative rod-like bacteria, their fermentation under aerobic condition at pH about 6.5-7.5, addition of calcium propionate to nutrient medium, pH medium is brought about to 10.5-12.5 and kept at 76.7-110 C for 3-20 min. Then heteropolysaccharide is precipitated from the nutrient medium, precipitated product is dried and ground. Cement composition has the following components, mas. p. : cement 181.4-362.8; filling agent 544.3- -1814.4; quick-hydrating velanic resin 45.36-907.18, and water 54.4-217.7. EFFECT: new form of velanic resin, improved quality of cement. 14 cl, 3 tbl, 14 ex
| Title | Year | Author | Number |
|---|---|---|---|
| TIXOTROPIC COMPOSITION | 1992 |
|
RU2105772C1 |
| GEL (ITS VARIANTS) | 1995 |
|
RU2134703C1 |
| MATERIAL TO BE USED AS CONCRETE ADDITIVE | 2010 |
|
RU2548624C2 |
| THIXOTROPIC COMPOSITION FOR INSULATING PETROLEUM PIPELINES AND METHOD OF THERMAL INSULATION ON THE BASIS OF COMPOSITION | 1992 |
|
RU2069676C1 |
| BASED ON FLY ASH LIGHT-WEIGHT CEMENTING COMPOSITION WITH HIGH COMPRESSIVE STRENGTH AND FAST SETTING | 2009 |
|
RU2513813C2 |
| GYPSUM MIXTURES FOR FORMATION OF SOLID MATERIALS | 2008 |
|
RU2513736C2 |
| LIGHT FOAMED BINDING SUBSTANCE BASED ON FLY ASH AND SYNTHESIS METHOD THEREOF | 2011 |
|
RU2595113C2 |
| PROCESS FOR PREPARING WATER-SOLUBLE SULFURIZED DISPERSANTS FROM INDENE-COUMARONE RESINS, CONCENTRATED DISPERSION OF CARBON IN WATER, AND COMPOSITION OF CONCRETE | 1994 |
|
RU2126423C1 |
| METHOD FOR PREPARING STYLBENE | 0 |
|
SU1095875A3 |
| NONFADING CEMENTING COMPOSITIONS OF BUILDING MORTAR | 2006 |
|
RU2383508C2 |
