Biotech solutions for concrete repair with enhanced durability

Jonkers, H.M.; Mors, RM; Sierra Beltran, M.G.; Wiktor, V.A.C.

Biotech solutions for concrete repair with enhanced durability

Book chapter (2016)

Authors

H.M. Jonkers Materials and Environment -

RM Mors Materials and Environment -

M.G. Sierra Beltran Microlab -

V.A.C. Wiktor Materials and Environment -

Research Group

Materials and Environment () (TU Delft)

Sustainability Biotechnology Durability Bacteria Concrete repair Microbially driven calcium carbonate precipitation

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Published Date

12-01-2016

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Materials and Environment

Abstract

In this chapter an overview will be given of the biotechnological possibilities for repair of concrete with focus on application of limestone-producing bacteria and the different metabolic pathways involved, e.g., via hydrolysis of urea and heterotrophic CO₂ production under alkaline conditions. The first paragraph comprises an overview of previously published reports on this subject. In the two succeeding paragraphs, two specific systems for biotechnological repair of concrete structures will be discussed. The first one covers liquid biobased repair systems for durable repair of cracked and porous concrete surfaces, and the second one addresses biobased mortar systems for repair of larger defects of concrete structures. The cases discussed here indicate that concrete repair applying biotech solutions results in improved material durability that can save money and at the same time lower the environmental impact of civil engineering activities.