http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112047663-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_792f877a983c0ee8da1933b88350d6df |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B40-0039 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-2694 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F218-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F283-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-26 |
| filingDate | 2020-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_262330f08070277d7738b6c96815d32f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_381a51e8273c43a0e61e9a28ca9d0159 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4267f07d6b96b3e71ec10dbcd5300ac8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a45cc8d825df586e9fe20af676e381a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86f2ee506f90ccbec8cac7430fad92c6 |
| publicationDate | 2020-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112047663-A |
| titleOfInvention | A kind of special concrete additive for shield segment and preparation method thereof |
| abstract | A special concrete additive for shield segments and a preparation method thereof. The additive is compounded from an early-strength polycarboxylate water-reducing agent, an early-strength agent, a state regulator, a defoamer, an air-entraining agent and water. , the mass percentage is: early strength polycarboxylate water reducer 25% to 45%, early strength agent 0 to 12%, state regulator 0.5% to 3%, defoamer 0.05% to 0.2%, air entraining agent 0.01% %～0.1%, the rest is water. The above-mentioned early-strength polycarboxylate water-reducing agent is an early-strength polycarboxylate water-reducing agent with a side chain molecular weight of 4000-6000. Preparation method: add early-strength agent, water, and stir evenly in sequence, then add early-strength polycarboxylate water-reducing agent, state regulator and defoamer to continue stirring, and finally add air-entraining agent and stir evenly to obtain the additive . The use of the special concrete additive for shield tunnel segments of the invention can meet the requirement that the 8h steam curing strength of shield tunnel segments is more than 20Mpa, and reduce the appearance surface bubbles and color difference of the shield tunnel segments. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111362612-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114395073-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111362612-A |
| priorityDate | 2020-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.