Special grinding aid for maritime work cement and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of marine cement and grinding aid, which is applied in the field of marine cement production, can solve the problems of not helping marine cement resist seawater erosion, marine cement production and use, and marine concrete structural cracks, etc. Taiwan-hour output, preventing alkali-aggregate reaction, non-radioactive effect
Inactive Publication Date: 2021-02-02
NANJING YONGNENG MATERIALS
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Due to the particularity of marine cement, the addition of special grinding aids for general marine cement is not conducive to the production and use of marine cement
Generally, the special grinding aids for marine cement will stimulate the cement in the early stage to promote the rapid hydration of the cement, which will release a large amount of hydration heat and cause cracks in the marine concrete structure, and the special grinding aids for ordinary marine cement cannot help the marine cement to resist Erosion by seawater, thus reducing durability
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] A special grinding aid for marine cement, its raw material composition is: 5% of grinding aid mother liquor, 13% of industrial salt, 3% of high-efficiency water reducer, 7% of slag powder, 3% of limestone powder, 3% of silica fume, and The amount is fly ash, the total amount is 100%;
[0026] The above percentages are all percentages by mass. According to the formula ratio, mix the grinding aid mother liquor, high-efficiency water reducer, slag powder, limestone powder, silica fume, industrial salt and fly ash evenly to obtain Product 1.
Embodiment 2
[0028] A special grinding aid for marine cement, its raw materials are: 9% of mother liquor of grinding aid, 18% of industrial salt, 9% of high-efficiency water reducer, 15% of slag powder, 5% of limestone powder, 8% of silica fume, and The amount is fly ash, the total amount is 100%;
[0029] The percentages mentioned above are all percentages by mass. According to the formula ratio, the grinding aid mother liquor, high-efficiency water reducer, slag powder, limestone powder, silica fume, industrial salt and fly ash are stirred and mixed evenly to obtain Product 2.
Embodiment 3
[0031] A special grinding aid for marine cement, its raw materials are: 7% of mother liquor of grinding aid, 15% of industrial salt, 6% of superplasticizer, 11% of slag powder, 4% of limestone powder, 5% of silica fume, and The amount is fly ash, the total amount is 100%;
[0032] The above percentages are all percentages by mass. According to the formula ratio, mix the grinding aid mother liquor, high-efficiency water reducer, slag powder, limestone powder, silica fume, industrial salt and fly ash evenly to obtain Product 3.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a special grinding aid for maritime work cement and a preparation method of the special grinding aid. The special grinding aid for maritime work cement is prepared from the following raw materials: 5-9% of grinding aid mother liquor, 13-18% of an industrial salt, 3-9% of a superplasticizer, 7-15% of slag powder, 3-5% of limestone powder, 3-8% of silica fume and 36-66% of fly ash; specifically, the percentages are mass percentages. By using the superplasticizer with high dispersion performance, cement particles can be highly dispersed, and in addition, through dispersionpermeation, charges carried by the cement particles are neutralized, so that the agglomeration phenomenon is reduced. Slag powder, limestone powder and fly ash are used, so that hydration heat of marine cement can be remarkably reduced, adiabatic temperature rise in concrete is reduced, temperature stress caused by internal and external temperature difference is reduced, generation of concrete temperature cracks is prevented, the overall integrity of a concrete structure is guaranteed, therefore, the corrosion resistance and the durability of the concrete structure are effectively improved.
Description
technical field [0001] The invention belongs to the technical field of marine cement production, and in particular relates to a special grinding aid for marine cement and a preparation method thereof. Background technique [0002] At present, with the growth of social economy, my country's marine engineering construction industry has gained a wide range of development space, and with the advent of the information age, more and more new science and technology have been developed and used in the construction of marine engineering projects. But even so, it is still unavoidable that some natural factors have an impact on marine engineering buildings, such as salt spray, medium erosion and wave erosion, and many other inevitable natural factors, and it is precisely because of the existence of these factors that the service life of marine concrete Caused a great negative impact, prompting the emergence of building water heating phenomenon. This in turn leads to cracks in the part...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more