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随着混凝土工程不断大规模化、复杂化、超高层以及混凝土所处环境的恶化影响,为保证工程质量,促进施工管理,提高混凝土的耐久性,促进社会可持续发展,研究高性能混凝土也就显得势在必行和意义深远了。1、研究技术方案: 在材料科学理论的指导下,通过大量试验,采用新思路、新工艺研制出具有微膨胀,改善新拌混凝土工作性,改善混凝土耐久性,特别是抗渗性、抗冻等性能的新型矿物添加剂;研究免振捣混凝土材料组成、结构和性能之间的关系,将流变学和最紧密堆积原理应用于免振捣混凝土的配合比设计:将研制出的多功能矿物添加剂掺用到免振捣混凝土中,配制出工作性能良好,能有效控制坍落度经时损失,具有微膨胀或补偿收缩功能,具有优良耐久性的高性能混凝土;在上述基础上建立免振捣微膨胀高性能混凝土组成、结构、性能关系的理论模型,充实和发展混凝土科学理论:将研究的成果应用于工程,解决工程实际问题。
With the continuous large-scale concrete projects, complex, ultra-high-rise and the deterioration of the concrete environment, in order to ensure the quality of the project, to promote the construction management, improve the durability of concrete and promote social sustainable development, research on high performance concrete It is imperative and far-reaching significance. 1, the study of technical programs: under the guidance of the material science theory, through a large number of experiments, the use of new ideas, new technology developed with a slight expansion, to improve the workability of fresh concrete to improve the durability of concrete, especially impermeability, antifreeze Such as the performance of the new mineral additives; study Vibration-free concrete material composition, structure and performance of the relationship between the rheology and the principle of the most close accumulation of vibration-free mix concrete mix design: the development of multi-functional mineral Add additives into the vibration-free pound concrete, the preparation of a good working performance, can effectively control the slump loss over time, with slight expansion or compensation shrinkage, with excellent durability of high performance concrete; on the basis of the establishment of vibration-free The theoretical model of the relationship between composition, structure and performance of high-performance concrete with expansion micro-expansion is to enrich and develop the theory of concrete science. The research results are applied to the engineering to solve practical engineering problems.