Home – Home – Jornals – Chemistry for Sustainable Development 2005 number 5

A new formula of the plugging solution of gypsum-free binder containing clinker and calcium oxide (a waste product of soda production, 10 % of the amount of clinker) nitrylmethylenephosphonic acid (0.10-0.13 %) and soda ash Na₂CO₃ (3.8-5.0 %) is proposed for cementation of wells in frozen rocks of the deposits of the Far North. It is shown that all the essential characteristics of the stone formed from the indicated plugging solution are 2-4 better than those of binding compositions based on Portland cement with CaCl₂ (10 %) added.