ACTIVE MINERAL ADDITIVES OF SAPROPEL ASHES Доклады на конференциях
Язык | Английский | ||||
---|---|---|---|---|---|
Тип доклада | Устный | ||||
Конференция |
International Scientific Conference of Young Scientists: Advanced Materials in Construction and Engineering 15-17 окт. 2014 , Tomsk |
||||
Авторы |
|
||||
Организации |
|
Реферат:
The goal of the presented research is to establish a scientific rational for the possibility of sapropel ashes usage as an active mineral additive. The research included the study of producing active mineral additives from sapropels by their thermal treatment at 850-900 оС and afterpowdering, the investigation of the properties of paste matrix with an ash additive, and the study of the ash influence on the cement bonding agent. Thermogravimetric analysis and X-ray investigations allowed us to establish that while burning, organic substances are removed, clay minerals are dehydrated and their structure is broken. Sapropel ashes chemical composition was determined. An amorphous ash constituent is mainly formed from silica of the mineral sapropel part and alumosilicagels resulted from clay minerals decomposition. Properties of PC 400 and PC 500A0 sparopel ash additives were studied. Adding ashes containing Glenium plasticizer to the cement increases paste matrix strength and considerably reduces its water absorption. X-ray phase analysis data shows changes in the phase composition of the paste matrix with an ash additive. Ash additives produce a pozzolanic effect on the cement bonding agent. Besides, an ash additive due to the alumosilicagels content causes transformation from unstable calcium aluminate forms to the stable ones.
Библиографическая ссылка:
Khomich V.A.
, Danilina E.
, Krivonos O.I.
, Plaksin G.V.
ACTIVE MINERAL ADDITIVES OF SAPROPEL ASHES
International Scientific Conference of Young Scientists: Advanced Materials in Construction and Engineering 15-17 Oct 2014
ACTIVE MINERAL ADDITIVES OF SAPROPEL ASHES
International Scientific Conference of Young Scientists: Advanced Materials in Construction and Engineering 15-17 Oct 2014