陶粒增强矿物混凝土的制备和性能研究

摘要本文重点研究了以废加气混凝土为原料，掺有钢纤维的免烧壳层陶粒的相关性能和用其制备的混凝土的抗压强度。并从废物利用的角度出发，对废弃的加气混凝土进行了再利用，以解决长期以来存在的处理的问题。以废弃的加气混凝土、粉煤灰、石英砂和水泥作为原材料，并在其中掺入一定量的钢纤维改善性能，利用水热合成的方法制备出了高性能免烧硅酸盐壳层陶粒，并对其相关性能表征进行了深入探究。实验结果表明，免烧壳层陶粒的吸水率小于 5%，筒压强度高达35MPa，堆积密度与表观密度均优于混合陶粒。对使用免烧壳层陶粒作为粗骨料的轻集料混凝土进行了抗压强度测试，结果显示，掺有免烧壳层陶粒的混凝土的抗压强度要远远优于用混合陶粒制成的混凝土。最高抗压强度高达 73.20MPa，其抗压强度平均高约 31.28%。其内部结构分布也更加均匀。这些陶粒在保证高强度的情况下，同时降低了砌块质量，使其在建筑材料领域拥有更好的使用前景。48047
毕业论文关键词废弃加气混凝土硅酸盐壳层陶粒性能表征轻集料混凝土抗压强度

Title The Preparation and Performence Investigation of CeremsiteEnhanced Mineral Concrete

AbstractThis article focused on the performence of no-sintering shell ceramsite that madeby wasted autoclaved aerated concrete(FAAC) and mixed with steel fiber as wellas the compressive strength of concret made with it.Motivated by the recycle ofwaste material,FAAC was utilized and re-used in this research in order to solvethe problem of disposing the wasted.This experiment used FAAC,fly ash,quartz sandand cement as raw material ,mixing with steel fiber to improve performence ,throughhydrothermal synthesis process to prepare the high performence no-sinteringsilicate-shell-ceramsit.Meanwhile,the performence of ceramsite was investigatedthoroughly in this research.The results showed that water absorption of thisno-sintering ceremsite was lower than 5% and the highest cylinder compressivestrength of ceramsite reached 35MPa.What’s more,its tap density and apparentdensity were better that of mixed ceramsite.The compressive strength of lightweight aggregate concrete usingsilicate-shell-ceramsit as coarse aggregate was investigated in this research.Theoutcome showed that the compressive strength of concrete ,furthest came up73.20MPa,that mixed with no-sintering shell ceramsite was far more better thatthose made by mixed creamste.Its average compressive strength was higher about31.28%.Furthermore,its structure distribution inside was better-distributed.Withstrength assused ,these ceremsite also reduced the weight of concret block,whichmade it gaining a promising propect in the field of building material.

Keywords wasted autoclaved aerated concrete silicate-shell-ceramsitperformence lightweight aggregate concrete compressive strength

1绪论1

1.1研究背景1

1.1.1建筑行业对新型材料的迫切需求.1

1.1.2建筑材料发展历史1

1.2废加气混凝土1

1.3免烧陶粒2

1.4新型建筑材料——轻集料混凝土2

1.5本实验研究内容3

2实验过程.4

2.1实验原材料与实验设备.4

2.1.1实验原材料.4

2.1.2仪器设备.5

2.2实验方法8

2.2.2混凝土试块的制备与养护9

2.3性能测试13

2.3.1陶粒吸水率.13

2.3.2陶粒堆积密度.13

2.3.3陶粒表观密度.14

2.3.4陶粒粒型系数.14

2.3.5陶粒筒压强度.14

2.3.6混凝土抗压强度测试15

3.实验结果与讨论16

3.1陶粒性能表征16

3.1.1陶粒吸水率.16

3.1.2陶粒堆积密度.16

3.1.3陶粒表观密度.17 陶粒增强矿物混凝土的制备和性能研究:http://www.youerw.com/cailiao/lunwen_50387.html