http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112745050-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B20-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B14-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B20-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B14-28 |
| filingDate | 2021-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112745050-B |
| titleOfInvention | Preparation method of modified limestone powder for mass concrete |
| abstract | The invention discloses a preparation method of modified limestone powder for mass concrete, which comprises the following steps: heating and stirring limestone powder and a silane coupling agent in an ethanol solution for 1-2 h: cooling to 60-70 ℃, adding polyoxyethylene ether and ammonium persulfate, stirring for 1-2h, and cooling; adding high molecular polymer and stirring at high speed for 1-2 h; drying to remove ethanol to obtain modified limestone powder. The limestone powder prepared by the invention is grafted with the phase change material on the surface, can be melted into liquid state within the range of 40-60 ℃, adsorbs the hydration heat of concrete, delays the temperature rise rate, is cooled, solidified and releases heat when the temperature of the concrete is lower than 40 ℃, reduces the temperature difference of the inner surface of a concrete structure, and reduces the surface cracking phenomenon. |
| priorityDate | 2021-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.