Claims
- 1. A composition for rendering porous materials impervious consisting essentially of a fine powder of a calcium containing compound having a solubility in water of between approximately 0.01 and approximately 2 g/l mixed into a silica solution having a ration of SiO.sub.2 to Na.sub.2 O of between 1 and 1.3 said composition requiring at least approximately one hour to set.
- 2. A composition according to claim 1 wherein the fine powder of the calcium containing compound is obtained by suspending a calcium containing powder in water with a deflocculant.
- 3. A composition according to claim 1 wherein the compound containing calcium is calcium carbonate.
- 4. A composition according to claim 2 wherein said deflocculant is a naphthalene compound.
- 5. A composition according to claim 1 wherein the SiO.sub.2 content is between 10 to 20% and its Na.sub.2 O content is between 10 and 15%.
- 6. A composition for rendering porous materials impervious consisting essentially of a fine powder of a calcium containing compound having a solubility in water of between approximately 0.01 and approximately 2 G/l mixed into a silica solution having a ratio of SiO.sub.2 to Na.sub.2 O of between 1 and 1.3 and wherein said composition slowly liberates Ca.sup.2+ ions through hydrolysis when said composition is injected into porous materials.
- 7. A composition according to claim 5 wherein said composition has a setting time of between approximately 1 and 12 hours.
Parent Case Info
This application is a continuation of Ser. No. 196,749, filed 5/20/88, now abandoned, which is a division of application Ser. No. 891,776, filed on July 30, 1986, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (6)
Number |
Date |
Country |
55-78083 |
Jun 1980 |
JPX |
56-74179 |
Jun 1981 |
JPX |
56-152886 |
Nov 1981 |
JPX |
60-53587 |
Mar 1985 |
JPX |
84196 |
Mar 1984 |
LUX |
606119 |
Jun 1945 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Chemical Abstracts 72 (2): 5981s, 103(12): 92157s; 95 (12): 102105s. |
APS Abstracts of JP 56-152886; JP 55-78083. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
891776 |
Jul 1986 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
196749 |
May 1988 |
|