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摘要随着世界各国军事实力的发展，对防护材料提出了越来越多的挑战。当今世界，装甲防护材料正朝着强韧化、轻量化、多功能化和高效化的方向发展。本课题基于高强度混凝土的制备原理，使用高硬度、高强度骨料，充分发挥活性硅质材料在硅酸盐基结构形成过程中的物理与化学效应，优选高效减水剂确保超高强度硅酸盐混凝土具有良好的工作性。添加不同长径比、体积率钢纤维，获得最佳超高强度硅酸盐混凝土的增强、增韧与阻裂效应。在多种成型模式与水热合成条件下，制备具有低密度(相比陶瓷装甲材料)、低成本和高韧性等优点的超高强度硅酸盐混凝土材料。本研究取得了很好的结果，尤其是在通过长钢纤维的添加以使得超高强硅酸盐混凝土的抗折和抗压强度得到提升上，最好的试样的抗折强度达到了64.9MPa，抗压强度达到了355MPa，相比前人，取得了重大进步，另外，在其他组分搭配中，我们的试样抗折和抗压强度也达到较高的数值。67819
毕业论文关键词：超高强硅酸盐 力学性能 影响因素
Abstract：
With the development of world military strength，the world puts forward more and more challenges for protective material.In today's world,armor material is now developing towards the direction of strengthening and toughening, light weight, multifunction and high efficiency.This paper is based on the preparation of high strength concrete.We use high hardness and high strength concrete in our experiment.We make full activity of siliceous material physical and chemical effects in the process of silicate structure,and choose super plasticizer to ensure high strength Portland concrete has good workability .Add a different aspect ratio, volume ratio of steel fiber,in this way ,we can gain high strength Portland concrete that toughness and resistance and effect of crack of it are enhanced.In a variety of molding mode and hydrothermal synthesis conditions,produce high Portland concrete which has low density (compared to ceramic armor materials),low cost and high toughness.This study has achieved very good results，especially in the improvement of super high strength Portland concrete flexural and compressive strength,which is done by the add of steel fibers.Our flexural strength is up to 64.9 MPa,and the compressive strength is up to 355 MPa.In comparison with those former studies,we have achieved a lot .In addition,other components in the collocation, our sample reached a higher numerical flexural and compressive strength.
Key Words:Ultra high strength Portland Mechanical properties Influence factors
目 次
摘要4
Abstract 4
1.绪论 5
1.1本课题研究背景及意义 5
1.2本课题研究目的和方法 6
1.3本文主要研究内容 8
2.原料及制备工艺8
2.1超高强度硅酸盐材料的制备途径 8
2.2原材料及其基本特性 9
2.2.1水泥9
2.2.2硅灰 9
2.2.3石英砂 9
2.2.4石英粉 10
2.2.5钢纤维 10
2.2.6陶粒颗粒 10
2.2.7白刚玉 10
2.2.8减水剂 11
2.3实验设备 11
2.3.1行星式水泥胶砂搅拌机 11
2.3.2水泥胶砂振动台11
2.3.3电热恒温水槽 12
2.3.4快开式迴转搅拌反应釜12
2.3.5液压式万能试验机13
2.3.6.10T万能材料试验机 13
2.3.7压力试验机 13
2.4 超高强度硅酸盐试样制备方法 14
2.4.1试样制备流程 14
2.4.2成型方法 15
2.5超高强度硅酸盐试样养护方法 15
2.6超高强度硅酸盐混凝土力学性能测试16