| 摘要 |
PURPOSE: A composition for calcination phase grout injection is provided to reduce gelation time, to extend plastic state and to enhance durability and application properties by including a mixture of calcium oxide, aluminum silicate and bentonite with swelling degree of 20 or greater as a plasticizer. CONSTITUTION: A composition for calcination phase grout injection comprises a mixture of water, cement, sodium silicate as a curing agent, calcium oxide as a plasticizer, aluminum silicate, and bentonite with swelling degree of 20 or greater. The plasticizer comprises 30-70 wt% of calcium oxide, 5-30 wt% of aluminum silicate, 20-45 wt% of bentonite with swelling degree of 20 or greater based on total weight of the plasticizer compound. 2-12 wt% of sodium silicate curing agent is included based on total weight of the composition. A calcination phase grout injection method comprises the following steps: manufacturing sodium silicate curing agent; manufacturing compositions for plasticizer phase grout injection by mixing plasticizer mixture with cement; and squeeze pumping, mixing and injecting the sodium silicate curing agent and the composition for calcination phase grout injection. [Reference numerals] (AA) Plasticizer silo; (BB) Cement silo; (CC) B solution silicate of soda tank; (DD) Water tank; (EE) A solution mixer; (FF) A solution stirring tank; (GG) A solution pump; (HH) Pump control panel; (II) B solution pump; (JJ) Operating supervisory control panel; (KK) Mixer; (LL) Ground; (MM) Precinct |
