Cement composition comprising biochar
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Concrete composition
US9469570B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9469570-B2 |
| Application number | US-201514699142-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 29, 2015 |
| Priority date | Apr 30, 2014 |
| Publication date | Oct 18, 2016 |
| Grant date | Oct 18, 2016 |
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Abstract
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A concrete composition is provided comprising a nonionic water-soluble cellulose ether, water, cement, a fine aggregate, and a coarse aggregate. The nonionic water-soluble cellulose ether has a 2 wt % aqueous solution viscosity of 3-1,000 mPa·s at 20° C. The concrete composition has a static slump/remix slump ratio of at least 0.50.
First claim
Opening claim text (preview).
The invention claimed is: 1. A concrete composition comprising a nonionic water-soluble cellulose ether, water, cement, a fine aggregate, and a coarse aggregate, wherein the nonionic water-soluble cellulose ether has a 2 wt % aqueous solution viscosity of 3 to 1,000 mPa·s at 20° C. and the concrete composition has a slump ratio (AB) of at least 0.60, wherein A is a static slump value of the concrete composition, B is a remix slump value of the concrete composition, and both the static slump value and the remix slump value are measured according to JIS A 1101. 2. The concrete composition of claim 1 , which immediately after mixing, has a slump value of 5 to 24 cm as measured according to JIS A 1101. 3. The concrete composition of claim 1 wherein the nonionic water-soluble cellulose ether is added in an amount of 0.01 to 5 kg per cubic meters of the concrete composition. 4. The concrete composition of claim 1 wherein the nonionic water-soluble cellulose ether is hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose or hydroxyethyl cellulose. 5. The concrete composition of claim 1 , having a water/cement ratio in the range of 35 to 72% by weight.
Assignees
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Classifications
Segregation-preventing agents; Sedimentation-preventing agents · CPC title
containing hydraulic cements other than calcium sulfates · CPC title
Bleeding-preventing agents · CPC title
- C04B28/04Primary
Portland cements · CPC title
- C04B24/383Primary
Cellulose or derivatives thereof · CPC title
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- What does patent US9469570B2 cover?
- A concrete composition is provided comprising a nonionic water-soluble cellulose ether, water, cement, a fine aggregate, and a coarse aggregate. The nonionic water-soluble cellulose ether has a 2 wt % aqueous solution viscosity of 3-1,000 mPa·s at 20° C. The concrete composition has a static slump/remix slump ratio of at least 0.50.
- Who is the assignee on this patent?
- Shinetsu Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C04B28/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 18 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).