Sapropelic modifying additives for cement bonding agents

Abstract

The data on obtaining active mineral additives from sapropelic raw materials while their burning at 850 … 900оС and afterpowdering are presented in the article. Properties of paste matrix with sapropel ashes were studied and the mechanism of sapropel ashes influence was discovered. Introduction of ashes into Portland cement PC 400 and PC 500A0 together with Glenium plasticizer increases paste matrix strength and decreases its water absorption. Ash adding makes a puzzolanic effect on the cement bonding agent and causes the formation of stable calcium aluminate forms due to the alumosilicagels content.

Keywords

• активная минеральная добавка
• сапропель
• зола
• цементное вяжущее
• цементный камень