| Patent Number |
Title Of Patent |
Date Issued |
| 6858075 |
Thin concrete repair composition for alkali-aggregate reaction affected concrete |
February 22, 2005 |
| A cement repair composition is provided for repairing thin concrete. The composition comprises, in weight percentages: fine aggregates, 50-80%; Portland cement, 10-20%; reinforcing fibers such as polyethylene, steel and fiberglass fibers, 0-5%; and a plurality of further additives. The |
| 6848231 |
Method for reinforcing wooden structural elements using a reinforcement member |
February 1, 2005 |
| A method is provided for enabling an infrastructure, such as pipework or a bundle of electrical cables, to be passed directly through a wooden structural element without significantly weakening the structural element, rather than being routed around the structural element. A throughhole |
| 6823737 |
Non-contact inspection system for large concrete structures |
November 30, 2004 |
| A method and apparatus are provided for performing non-contact inspection of large concrete structures such as dams. A phrased array acoustic source transmits an acoustic wave onto the concrete structure. A laser transmitter-receiver unit transmits a laser beam onto the surface of the |
| 6749680 |
Thin concrete repair system |
June 15, 2004 |
| A cement repair material composition is provided for repairing thin concrete. The composition comprises, in weight percentages: fine aggregates, 50-80%; cement, 10-20%, said cement being selected from the group consisting of expansive hydraulic cement, gypsum cement, and magnesium ph |
| 6712552 |
Geosynthetic material irrigation system |
March 30, 2004 |
| The present invention is an economical and easily installed irrigation system for agricultural products covering large areas. The invention comprises top and bottom layers of geosynthetic material having a non-cohesive, porous material between the layers. A water distribution system |
| 6565644 |
Micro-encapsulated crack resistant cement |
May 20, 2003 |
| A cement mixture is provided for preventing or reducing the formation of micro-cracks during hydration. The cement mixture includes both a conventional cement and a cement micro-encapsulated in a time-release polymer coating. The micro-encapsulated cement does not hydrate until a few |
| 6541106 |
Hydrophilic polyurethane impregnated rubber for sealing water leaks |
April 1, 2003 |
| A material provided for sealing leaks in water conveyance systems includes a porous hydrophilic rubber impregnated with a water reactive polyurethane resin. When the material comes into contact with water, the rubber and polyurethane swell and this results in increased adhesion and impro |
| 6386037 |
Void detector for buried pipelines and conduits using acoustic resonance |
May 14, 2002 |
| A method and system are provided for detecting a void in backfill material such as soil surrounding a buried conduit such as a pipeline. The void is detected by monitoring an acoustic response from the conduit in response to acoustic excitation of the interior of the conduit. An analysis |
| 6105430 |
Inspection of concrete structures using sonic tomography |
August 22, 2000 |
| An acoustic travel time tomography system enables determining of physical properties of a dam, or a like concrete mass. The system includes a plurality of acoustic sensors, positioned on the dam at a plurality of spaced sensor locations which are known relative to each other, for pro |
