http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2437660-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be290fa9c341694b720365dc3b5851b3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B28B1-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B40-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B28B7-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B28B3-006 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B28B1-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B28B7-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B40-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B28B3-00 |
| filingDate | 1974-08-05^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36f8771696228a6463f3b12ddb5effd1 |
| publicationDate | 1976-02-19^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2437660-A1 |
| titleOfInvention | PROCESS AND MANUFACTURING OF PREBETON |
| abstract | In the mfr. of prefabricated concrete, the neat cement undergoes intensive treatment for optimum hydration and accelerated hardening at normal temp. Treatment comprises (1) applying a vacuum at constant reduced pressure to the steel mould contg. the unset concrete to expand the liq. capillaries in the neat cement; (2) using periodic, vertical, high-frequency vibration to obtain thixotropy; (3) applying an electric field via electrodes so interacting electrophoretic effects accelerate the hydrolysis; (4) removing the electric field and extracting the free water by suction, i.e. vacuum is applied on both sides of the mould; (5) using vertical vibration at high-frequency and low amplitude to compact the mixt. and (6) completing setting using the vacuum but without vibration (5) to obtain a compression strength of 11-15 kp/cm2. Used e.g. in the mfr. of large concrete panels on simple machines with low energy consumption. |
| priorityDate | 1974-08-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID962 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419512635 |
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