Addition for concrete of road for enhacing anti-bending strength
A concrete admixture and flexural strength technology, which is applied in the field of building materials, can solve the problems of high compressive strength margin, difficulty in achieving flexural strength, and increasing the amount of cement, so as to improve the gel phase structure of cement stone and reduce the amount of cement Dosage, the effect of improving early strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0025] Embodiment 1, improve flexural strength type road concrete admixture by naphthalenesulfonic acid formaldehyde condensate 18.4% (mass percentage, the same below), calcium lignosulfonate 6.4%, sugar calcium 1.5%, sodium sulfate 36.8%, sulfurous acid It is formulated with 7.5% iron, 14.7% calcium nitrite and 14.7% fly ash. Adding 2.0% of the admixture to the concrete, which accounts for 2.0% of the weight of the cement, can be used in 42.5 grade ordinary Portland cement with a dosage of 330kg / m 3 In the case of a slump of 3-5cm, the concrete with a flexural strength of more than 5.0MPa and a compressive strength of about 43MPa is prepared. When using the traditional method (that is, without the admixture), it is necessary to make the flexural strength When the strength reaches 4.5MPa, the amount of cement is generally 420kg / m 3 above, and the drying shrinkage rate is as high as 540×10 -6 .
Embodiment 2
[0026] Embodiment 2, improve flexural strength type road concrete admixture by naphthalene sulfonic acid formaldehyde condensate 14.9%, calcium lignosulfonate 3.7%, sugar calcium 2.2%, calcium sulfate 41.8%, ferrous sulfate 7.6%, calcium nitrite 14.9% and fly ash 14.9% formulated. Adding this admixture in concrete, which accounts for 2.5% of the weight of cement, can make the dosage of 32.5 ordinary Portland cement only 360kg / m 3 In the case of a slump of 3-5cm, the concrete with a flexural strength of more than 5.5MPa and a compressive strength of about 45MPa is prepared. When using the traditional method (that is, without the admixture), it is necessary to make the flexural strength When the strength reaches 4.5MPa, the amount of cement is generally 450kg / m 3 above.
Embodiment 3
[0027] Embodiment 3, improve flexural strength type road concrete admixture by naphthalenesulfonic acid formaldehyde condensate 20.2%, calcium lignosulfonate 1.6%, sugar calcium 1.0%, calcium sulfate 32%, ferrous sulfate 2.2%, calcium nitrite 20% and fly ash 23% prepared. Adding this admixture in concrete, which accounts for 4.5% of the weight of cement, can use only 350kg / m of 32.5 ordinary Portland cement 3 In the case of a slump of 3-5cm, the concrete with a flexural strength of more than 5.5MPa and a compressive strength of about 46MPa is prepared. When using the traditional method (that is, without the admixture), the flexural strength must be made When the strength reaches 4.5MPa, the amount of cement is generally 450kg / m 3 above.
PUM
Property | Measurement | Unit |
---|---|---|
flexural strength | aaaaa | aaaaa |
flexural strength | aaaaa | aaaaa |
slump | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com