INVESTIGATION OF THE MECHANISM CAUSING SHRINKAGE STRAINS IN CONCRETES MADE WITH SLAG BLENDED CEMENTS

矿渣是一种工业副产品，可以部分取代波特兰水泥。高矿渣含量可生产高耐久混凝土，并有助于减少水泥生产过程中的二氧化碳排放。矿渣含量高的主要问题往往是混凝土收缩过大。本项目将系统地研究影响矿渣混凝土收缩行为的所有因素，包括标准收缩测量方法的适宜性。另一个目标是开发一个微观机械模型，以了解其中涉及的基本机制。该模型还将有助于更好地理解所有混凝土中收缩的机理。

Slag, an industrial by-product, can partially substitute portland cement. High slag contents produce highly durable concretes and help reduce the CO2 emissions due to cement manufacture. Major problem of high slag content is often the high shrinkages resulting in the concrete. This project will systematically study all the factors affect the shrinkage behaviour in slag-blended cement concretes including the appropriateness of the standard shrinkage measurement method. The other aim is to develop a micro-mechanical model to understand the fundamental mechanism involved. This model will also lead to a better understanding of the mechanisms involved in shrinkage in all concretes.