| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cement composition exhibiting rapid increase of viscosity, having excellent strength development, non-separability in water and low pH and a method of effectively using the same. <P>SOLUTION: The cement composition comprises cement, rice husk ash and an alkali thickening type polymer emulsion and further comprises a hardening accelerator. A grouting material uses the cement composition. The method of using the cement composition is carried out by preparing a mixture containing cement, the rice husk ash and water as an A solution and a mixture containing the alkali thickening type polymer emulsion and water as a B solution and mixing the A solution with the B solution just before use. The method of using the cement composition is carried out by preparing a mixture containing the hardening accelerator and water as a C solution and mixing the A solution, the C solution and the B solution with each other in this order just before use. The method of using the cement composition is carried out by preparing a mixture containing the alkali thickening type polymer emulsion, the hardening accelerator and water as a D solution and mixing the A solution and the D solution with each other just before use. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
