Durability of low-clinker concrete

我研究的主要目的是通过研究和开发减少混凝土中波特兰水泥熟料含量的新技术来提高混凝土施工的可持续性。波特兰水泥熟料是在窑炉中生产的，由烧结物的固体结节组成。当冷却时，它与硫酸钙相互作用，产生成品水泥。通常在北美，波特兰水泥含有约92%的熟料。波特兰水泥熟料的生产是主要的温室气体排放者，减少混凝土的熟料含量增加了其作为建筑材料的可持续性。将在以下领域进行研究：(I)使用辅助胶凝材料取代混凝土中高比例的硅酸盐水泥(即替代水平高于传统使用的水泥)；(Ii)更广泛地使用再生材料和工业副产品作为混凝土的组成部分；(Iii)使用低熟料(低二氧化碳)水泥，如波特兰石灰石水泥和/或混合水泥；(Iv)开发预测混凝土劣化的数学模型，帮助选择材料和设计混凝土结构，以最大限度地延长使用寿命。采用的方法将从微观结构层面的材料研究到在实地试验中的使用。

The principal objective of my research is to increase the sustainability of concrete construction by conducting research and developing new technologies for reducing the portland cement clinker content of concrete. Portland cement clinker is produced in a kiln and consists of solid nodules of sintered material. When cooled it is interground with calcium sulfate to produce the finished cement. Typically in North America portland cement contains about 92% clinker. The production of portland cement clinker is a major greenhouse gas emitter and reducing the clinker content of concrete increases its sustainability as a construction material. Studies will be conducted in the following areas: (i) use of supplementary cementing materials to replace high proportions of Portland cement in concrete (i.e. larger replacement levels than those traditionally used); (ii) use of a wider range of recycled materials and industrial by-products as components of concrete; (iii) use of low-clinker (low-CO2) cements such as portland limestone cement and/or blended cement; (iv) development of mathematical models to predict concrete deterioration and aid in the selection of materials and design of concrete structures to maximize service life. The approach adopted will range from studying the materials at the microstructural level through to their use in field trials.