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US 12,098,098 B1Granted
Innovative cementitious composites (ICC): high-volume reclaimed asphalt pavement aggregate
AssigneeKing Saud University
InventorsYousef Rodaiman Alharbi, Abdulrahman Sulaiman Albidah, Galal Mohamed Fares
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Abstract
An ultra-high-performance cement composites comprising cement, a polycarboxylate ether-based superplasticizer, fly ash, silica fume, reclaimed asphalt pavement granules, water and red sand. A very low water-to-binder ratio could be obtained using the polycarboxylate ether-based superplasticizer that overcomes the hydrophobic properties of reclaimed asphalt pavement and yields an ultra-high-performance cement composite.
Claims19
A cement composite, comprising:
- cement, a polycarboxylate ether-based superplasticizer, fly ash, silica fume, reclaimed asphalt pavement (RAP) granules, water, and red sand;
- wherein the cement composite comprises between about 25% to about 40% RAP.
A method of making a cement composite, the method comprising:
- mixing water with a polycarboxylate ether-based superplasticizer dosage for initial flowability;
- adding fly ash to the water and the polycarboxylate ether-based superplasticizer dosage to create a first mixture;
- stirring the first mixture;
- adding cement to the first mixture to obtain a second mixture;
- stirring the second mixture in a high-shear mixer;
- gently adding silica fume to the second mixture to obtain a third mixture and stirring the third mixture;
- gradually adding reclaimed asphalt pavement (RAP) granules and red sand to the third mixture to obtain a fourth mixture;
- stirring the fourth mixture;
- optionally adding micro-steel fibers to the fourth mixture to obtain a fifth mixture;
- optionally measuring an initial flowability of the fifth mixture;
- and
- casting the fourth mixture or the fifth mixture, if made, into a target mold to obtain a cement composite.
9 more elements
Dependencies are inferred from the claim text.