King Fahd University of Petroleum and Minerals

Saudi Arabian Oil Company

Mohammed Shameem

Mohammed Maslehuddin

Mohammed Al-Mehthel

Saleh H Al-Idi

Salah Uthman Al-Dulaijan

Mohammed Ibrahim

Osama Ghanem Rashed Massarweh

Anas Alkhatib

Oil ash comprising carbon in an amount in the range of 60% to 89% is an effective set retarder in a cement composition. The oil ash prolonged the initial and final setting time of cement paste and retained the slump flow in concrete for a longer time than concrete without the retarder. Also, the addition of oil ash to cement marginally improved the compressive strength of concrete. The advantage of oil ash is that it can be used as a solid retarder of cement hydration to substitute for the conventional commercial retarding admixtures with a limited shelf-life.

Cement composition containing an oil ash set retarder

Concrete compositions containing cement, a fine aggregate such as sand, a coarse aggregate such as crushed limestone, an industrial waste material such as electric arc furnace dust, cement kiln dust, oil ash, or limestone powder. High performance concretes made therefrom and methods of producing such concretes are also specified. The addition of industrial waste materials and nano silica provides enhanced mechanical strength (e.g. compressive strength, flexural strength) and improved durability (e.g. resistance to penetration of chloride ions) to the high performance concretes.

High performance concretes and methods of making thereof

A calcium aluminate cement protective coating is resistant to sulfuric acid and can be used as a lining to protect surfaces in sulfur storage vessels and sulfuric acid storage vessels. The protective coating can include calcium aluminate cement, calcium aluminate based synthetic aggregates, and water. The protective coating is resistant to sulfur and sulfuric acid attack, and thus can be used to protect surfaces inside sulfur storage pits, sulfur storage tanks, and sulfuric acid storage containers.

Protection system for sulfur storage apparatus

A foam concrete has constituents that include a cement, a sand, a coarse aggregate having a density in a range of 1400-1600 kg/m, a water, and a foam solution. The foam solution includes a foaming agent and a foaming water. The foam concrete has a compressive strength of at least 20 MPa, a thermal conductivity of less than 0.40 W/mK and a maximum dry weight of 2000 kg/m.

Lightweight foam concrete

A foam concrete with elemental sulfur has constituents that include a cement, a fine filler, an elemental sulfur in powder form, a coarse aggregate, a water, and a foam solution. The foam solution includes a foaming agent and a foaming water. The foam concrete has a compressive strength of at least 26 MPa, a thermal conductivity of less than 0.30 W/mK and a maximum dry weight of 1620 kg/m.

Growing community of inventors

Dhahran, Saudi Arabia

Mohammed Shameem