Concrete composition containing palm oil fuel ash
US-2021380485-A1 · Dec 9, 2021 · US
Ash-containing concrete composition
US2021371343A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021371343-A1 |
| Application number | US-202117403918-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 17, 2021 |
| Priority date | Aug 6, 2019 |
| Publication date | Dec 2, 2021 |
| Grant date | — |
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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).
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 . (canceled) 4 . The concrete composition of claim 1 , wherein the treated palm oil fuel ash. 5 . (canceled) 6 . (canceled) 7 . (canceled) 8 . 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. 9 . (canceled) 10 . (canceled) 11 . (canceled) 12 . (canceled) 13 . (canceled) 14 . 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. 15 . The concrete composition of claim 1 , wherein a weight ratio of sodium silicate to sodium hydroxide is 1:1 to 3:1. 16 . (canceled) 17 . 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. 18 . (canceled) 19 . (canceled) 20 . (canceled)
Assignees
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Classifications
- C04B18/101Primary
Burned rice husks or other burned vegetable material · CPC title
Use of waste materials as fillers for mortars or concrete · CPC title
Ash cements, e.g. fly ash cements (fly ash as filler C04B18/08); Cements based on incineration residues, e.g. alkali-activated slags from waste incineration (alkali-activated combustion residues as such C04B7/243; mixtures of the lime-pozzuolane type C04B28/18); Kiln dust cements · CPC title
Quartz; Sand · CPC title
Burning; Melting · CPC title
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- What does patent US2021371343A1 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 C04B18/101. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 02 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).