http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109678433-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2201-50 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-04 |
| filingDate | 2019-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109678433-B |
| titleOfInvention | Ultrahigh-strength self-compacting micro-expansion steel pipe concrete and preparation method thereof |
| abstract | The invention discloses ultrahigh-strength self-compacting micro-expansion steel pipe concrete and a preparation method thereof. The composition comprises the following components in parts by weight: 580-680 parts of cement, 30-60 parts of fly ash microbeads, 25-50 parts of silica fume, 20-35 parts of an expanding agent, 700-750 parts of machine-made sand, 800-1050 parts of broken stone, 0.4-1.2 parts of a shrinkage reduction functional material, 3.5-7 parts of an additive, 120-160 parts of water and 4-5.5 parts of copper-plated short and fine steel fibers. The invention adopts machine-made sand with high stone powder content to replace natural river sand, takes stone powder as an inert admixture, adopts high-activity fly ash microbeads and silica fume, and utilizes the ball effect and the micro-aggregate effect to enhance the workability and the compactness of concrete and improve the homogeneity of the concrete. The novel expanding agent is prepared from the fly ash and the phosphogypsum, so that the strength is improved, and the air content is further reduced and the compactness is improved by using the additive. The machine-made sand concrete with high stone powder content has excellent working performance, mechanical property, volume stability and crack resistance. |
| priorityDate | 2019-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.