Concrete composition containing palm oil fuel ash
US-2021380485-A1 · Dec 9, 2021 · US
Ash-containing concrete composition
US11618715B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11618715-B2 |
| Application number | US-202117403918-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 17, 2021 |
| Priority date | Aug 6, 2019 |
| Publication date | Apr 4, 2023 |
| Grant date | Apr 4, 2023 |
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- Title
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Abstract
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A concrete composition that includes (i) a treated palm oil fuel ash, wherein the treated palm oil fuel ash is the only binder present, (ii) a fine aggregate, (iii) a coarse aggregate, and (iv) an alkali activator containing an aqueous solution of sodium hydroxide and sodium silicate. A cured concrete made from the concrete composition is also disclosed with advantageous compressive strength properties.
First claim
Opening claim text (preview).
The invention claimed is: 1. Ash-based concrete composition, comprising: a treated palm oil fuel ash having a median particle size (d 50 ) of 0.5 to 2.0 μm, wherein the treated palm oil fuel ash is the only binder present; a fine aggregate; a coarse aggregate; and an alkali activator comprising an aqueous solution of sodium hydroxide and sodium silicate, wherein the coarse aggregate has a saturated surface dry (SSD) specific gravity of 2.4 to 2.6, and wherein the treated palm oil fuel ash comprises 66 to 68 wt. % SiO 2 , 6 to 7 wt. % Al 2 O 3 , 5 to 6.5 wt. % Fe 2 O 3 , 5 to 6 wt. % CaO, each based on a total weight of the treated palm oil fuel ash. 2. The concrete composition of claim 1 , wherein the treated palm oil fuel ash is present in an amount of 20 to 30 wt. %, based on a total weight of the concrete composition. 3. The concrete composition of claim 1 , wherein the treated palm oil fuel ash has a median particle size (d 50 ) of 0.5 to 2.0 μm. 4. The concrete composition of claim 1 , wherein a weight ratio of a combined weight of the coarse aggregate and the fine aggregate to the treated palm oil fuel ash is 1:1 to 2:1. 5. The concrete composition of claim 1 , wherein a weight ratio of the alkali activator to the treated palm oil fuel ash is 0.3:1 to 0.7:1. 6. The concrete composition of claim 1 , wherein a weight ratio of sodium silicate to sodium hydroxide is 1:1 to 3:1. 7. The concrete composition of claim 1 , which consists of the treated palm oil fuel ash, the coarse aggregate, the fine aggregate, sodium hydroxide, sodium silicate, and water.
Assignees
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Classifications
Use of waste materials as fillers for mortars or concrete · CPC title
Quartz; Sand · CPC title
for the mechanical strength · CPC title
Burning; Melting · CPC title
Carbon capture and storage [CCS] · CPC title
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- What does patent US11618715B2 cover?
- A concrete composition that includes (i) a treated palm oil fuel ash, wherein the treated palm oil fuel ash is the only binder present, (ii) a fine aggregate, (iii) a coarse aggregate, and (iv) an alkali activator containing an aqueous solution of sodium hydroxide and sodium silicate. A cured concrete made from the concrete composition is also disclosed with advantageous compressive strength pr…
- Who is the assignee on this patent?
- Univ King Fahd Pet & Minerals
- What technology area does this patent fall under?
- Primary CPC classification C04B28/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 04 2023 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).