Biogrout: A Novel Binding Material for Soil Improvement and Concrete Repair

Development of an Eco-Friendly, Cost-Effective Biogrout for Concrete Crack Repair Final Report

Study of effect of paste volume, water to cementitious materials and fiber dosages on rheological properties and in-situ strength of self-compacting concrete

As a vibration- free concrete, self- compacting concrete (SCC) can be easily used in the absence of consolidation, therefore; it is a good option for repairing and retrofitting concrete structures. The quality of repair layer is highly effective on a successful repair. Accordingly, in this study, factors affecting the quality of fiber-reinforced self-compacting concrete repair layer, including ...

Development of an Eco-Friendly, Cost-Effective Biogrout for Concrete Crack Repair tech transfer summary

Cement-based materials have often been used for infrastructure construction and repair. The production of conventional Portland cement is energy-consuming and environmentally unfriendly. For example, production of one ton of Portland cement generates approximately one ton of carbon dioxide (CO 2 ) from calcining limestone and fuel use. It is estimated that cement production contributes 7% of to...

Experimental Investigation of the Methods of Evaluating the Bond Strength Between Concrete Substrate and Repair Materials

This investigation was aimed at studying the effect of test methods on bond strength between concrete substrate and repair material. Four test methods with cementations or modified-cementations repair materials, and two surface roughnesses were studied. The methods used were pull-off, slant shear, splitting prism and a new direct shear named Bi-Surface shear test. While the coefficient of varia...

Effect of Seawater on Micro-Nano Air Bubbles Concrete for Repair of Coastal Structures

This paper investigated the effects of seawater curing of concrete made by Micro-Nano Air Bubbles (MNAB) on compressive, flexural and tensile strengths of the concrete. This product will be applicable for rehabilitation or repair of coastal RC structures. In this research, the effect of different combinations of concrete ingredients including 0-100, 25-75, 50-50, 75-25, and 100-0 percent ...