Nano-modified alkali-activated cementitious materials for rapid repair
AssigneeNano and Advanced Materials Institute Limited
InventorsChung Kong Chau, Xiwen Guan, Binyu Zhang, Man Lung Sham
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Abstract
A nano-modified dry-mixed alkali-activated cementitious, or one-part geopolymer cement (OPgC), material with high early strength is provided for rapid repair of cement-based infrastructure components. The OPgC may include an aluminosilicate rich material, an alkali material and a nano-modifier, and optionally include other functional admixtures and fibers. The OPgC can be freshly mixed with water to obtain a repairing material. The OPgC may mix with water and fine or coarse aggregate to form mortar or concrete. The OPgC can be an alternative binding matrix for the development of an environmentally friendly and cost effective rapid repair material.
Claims17
A nano-modified dry-mixed alkali-activated cementitious material for rapid repair, comprising an aluminosilicate material, an alkali material and a nanoparticle material, wherein the aluminosilicate material comprises at least feldspar in an amount of 1-25% w/w of the total aluminosilicate material and nepheline in an amount of 1-25% w/w of the total aluminosilicate material, and wherein the alkali material is present in an amount of 1-15% w/w of the total aluminosilicate material, and wherein the cementitious material attains a 1-day compressive strength of no less than 14 MPa.
Dependencies are inferred from the claim text.