Patent · US Active

Recycled concrete waste powder and aggregates with heavy oil fuel ash for producing a green flowable backfill material

US12304863B2 · kind B2 · utility

0Cited by

8References

20Claims

0Family size

Assignees

SAUDI ARABIAN OIL COMPANY · SA
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS · SA

Inventors

Carlos Ernesto Acero · Dhahran, SA
Muhammed Kalimur Rahman · Dhahran, SA
Zakariya Saleh Al-Helal · Dhahran, SA
Mohammed Ibrahim · Dhahran, SA
Luai M. Alhems · Dhahran, SA
Mohammed Salihu Barry · Dhahran, SA

Key dates

Filing date	Jul 11, 2022
Grant date	May 20, 2025
Priority date	—
Expiry date	Sep 1, 2043

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Compositions and methods of forming compositions for a controlled low strength material (CLSM) comprising heavy oil fuel ash (HOFA) and recycled concrete powder (RCP) waste with natural and recycled aggregates and water are provided. In some embodiments, small quantities of Portland cement are also utilized. The recycled concrete powder contains primarily calcite and quartz. The CLSM can be used as a flowable compacted fill in structural and non-structural construction applications.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.