Utilization of heavy oil fly ash to produce controlled low strength material for backfilling applications

US11434168B2 · kind B2 · utility

Assignees

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

Inventors

• Zakariya Saleh Al-Helal · Dhahran, SA
• Carlos Ernesto Acero · Dhahran, SA
• Salah U. Al-Dulaijan · Dhahran, SA
• Muhammad Kalimur Rahman · Dhahran, SA
• Mohammed Ibrahim · Dhahran, SA

Key dates

• Filing date: Mar 11, 2020
• Grant date: Sep 6, 2022
• Expiry date: Jan 2, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2201/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A controlled low strength material has constituents that include a cement, an aggregate, a heavy oil fly ash, and a water. The controlled low strength material has a compressive strength in a range of 300 kPa to 2.1 MPa. In certain embodiments, the heavy oil fly ash can be part of a heavy oil fly ash slurry.