| Abstract [eng] |
Master's final degree project investigates durability of waterproof concrete. The theoretical part review the negative effect of water in concrete structure, its origin and mechanism of action. In this part the ways of making concrete waterproof and durable are discussed. The principle and types of self-healing concrete are discussed and the effect of crystalline additive for the durability of concrete is analyzed. As there is no standart for test methodology in Europe for assessing the efficiency of self-healing concrete, the methods which are discussed in the scientific literature are reviewed in this work. The experimental part investigates the durability of concrete which is exposed to water and freeze-thaw cycling. The use of a material for making self-healing concrete - crystalline additive, air-entraining additive and external waterproofing membrane to make the concrete waterproof and thus durable is being investigated. The results of the volumetric, capillary refrigeration are given, as well as the results of the tests for evaluation of self-healing concrete efficiency (water permeability and absorbtion). |
