【作者】 钟开红；

【导师】 马保国；

【作者基本信息】 武汉理工大学 ， 材料学， 2004， 硕士

【摘要】 本课题以国家和地方墙体材料改革政策和发展现状为背景，综合利用当地可再生资源研制开发了新型墙体材料体系，该体系包括承重墙体材料——高绿色度蒸养粉煤灰砖(High-environmental-protection Steam-maintain Fly Ash Bricks，以下简称HSFAB)和非承重墙体材料——自发气轻质混凝土(Self-Aerated Lightweight Concrete，以下简称为SALC)。通过大量实验对宏观物理力学性能、耐久性能及微观结构进行了分析，结果表明该体系是传统实心粘土砖的理想替代产品。 在HSFAB的研究方面，通过两种体系HSFAB(即“水泥—钢渣—粉煤灰—炉渣”和“石灰—钢渣—粉煤灰—炉渣”体系)的配方优化设计，使之具有良好的社会、经济和环境效益；在高掺量工业废渣的前提下，根据各种原料的特性，对其采用不同的活化技术，使其具有较高的活性；自研的外加剂F，对HSFAB制品的物理力学性能和耐久性能均有明显的改善作用，尤其是对制品的干燥收缩性能有显著的抑制作用；通过对工艺参数的研究，结合实际生产普遍存在的问题，选取了HF-1100系列全自动液压墙体砖压机，有效地解决了传统制砖过程中常见的成型压力低、生产效率低、产品合格率低(即“三低”现象)等问题。 在SALC的研究方面，主要包括发气速度和稠化速度的协调性研究、新型多功能复合外加剂的研制、耐久性能的研究以及新型多功能非承重复合墙体结构及其浇注成型的快速组装模具设计等内容；结果表明：科学合理的引入辅助外加剂在一定程度上使SALC材料的工作性及相应物理力学性能得以最佳匹配，增强了SALC材料对冻融循环、干湿循环及干燥收缩的抵抗能力，使SALC在不同的环境下均具有较好的体积稳定性。 在实验研究和理论分析的基础上，本研究成果已在武汉市推广应用，其生产和施工工艺已基本完善。实践证明，HSFAB和SALC具有优良的物理力学性能、耐久性能以及较高的性价比。由于工业废渣利用率高使其具有良好的社会效益、经济效益和环境效益，为墙体材料的改革提供了坚实的理论基础和技术指导。更多还原

【Abstract】 On the background of the innovation of the wall material and the current situation of the development in China, the regenerative material is synthetically used to prepare new wall material, including High-environmental-protection Steam-maintain Fly Ash Bricks(HSFAB) and Self-Aerated Lightweight Concrete(SALC).The mechanics characteristic, durability and micro-structure of the new wall material are analysed. It shows that the materials are the perfect replacement products of the traditional solid clay brick.Two systems of HSFAB-cement-steel slag-fly ash-slag and lime-steel slag-fly ash-slag- are designed to fit for the requirement of performance, cost and environmental-protection, etc.. On the basis of the characteristic of the industry waste slag, which is high added to the HSFAB, different kinds of catalyzing methods are adopted to make the waste residue more active. The additive F, developed by the author can obviously improve the mechanics characteristic and durability of HSFAB, especially the restraining of the drying shrinkage. Based on the study of technics parameters and the problems in the manufacture, HF-1100 series full-automatic hydraulic pressure wall brick presses is chosed to solve the problems, such as low molding pressure, low efficiency and the certified product ration.The study on SALC includes:1) the study on the harmonization between aeration rate and melts thickly rate;2) the study and application of the New Multi-function Composite Additive(NMCA);3)the study on the durability of SALC; 4) the designation of the structure of new multi-functional unbearing compound wall and fast equipment mold, etc. The results show: the additive can improve the harmonization of the workability and mechanics characteristic of SALC to a certain extent; improve the volume stability of SALC under different environment by enhancing the resistance to the freeze and thaw, dry and wet circle and drying shrinkage.The accomplishment of the task is applied in Wuhan. And it is proved that HSFAB and SALC have good mechanics characteristic, durability and high performance/cost rate. The high content of industry waste slag lead to a good benefit on social, economy and environment, so the study have been offered the solid theoretical foundation and the technique direction for the innovation of wall material in China.更多还原