Nano and Advanced Materials Institute Limited

Yue Kee Lam

Man Lung Sham

Honggang Zhu

Shuai Fang

Chi Sun Poon

Feng Li

Pui Lam Ng

A high-workability, fire-resistant, anti-spalling concrete composition is provided. The concrete composition has a slump value of at least approximately 150 mm, a fire-resistant period of at least 4 hours, a compressive strength of at least 120 MPa at room temperature, and a compressive strength of at least 20 MPa at 700&#xb0; C. The composition includes cement, fly ash, silica fume, aggregate particles having a particle size Dof approximately 20 mm or less and superplasticizer. The composition includes fiber additives including steel fibers in an amount ranging between approximately 0.1% and approximately 0.4% by volume of the concrete composition and polypropylene fibers having a melting point of approximately 200&#xb0; C. or less in an amount ranging between approximately 0.05% and 0.3% by volume of the concrete composition. Carbon nanotubes are also present in an amount ranging between approximately 0.1% and approximately 0.3% by volume of the concrete composition.

Growing community of inventors

Hong Kong, China

Yue Kee Lam