添加废弃混凝土微粉改善水泥胶砂的微观结构及力学性能
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- 英文论文题名：Compacted Microstructure and Improved Mechanical Properties of Cement Mortar by Adding Waste Concrete Dust
- 论文作者：车玉君 ; 杨华山
- 英文论文作者：CHE Yujun ; YANG Huashan ; School of Materials and Architecture Engineering ; Guizhou Normal University
- 年：2016
- 作者机构：贵州师范大学材料与建筑工程学院;
- 论文关键词：废弃混凝土微粉 ; 力学性能 ; 微观结构 ; 水泥砂浆
- 英文论文关键词：waste concrete dust ; mechanical properties ; microstructure ; cement mortar
- 会议召开时间：2016-11-18
- 会议录名称：第一届先进材料前沿学术会议论文集（《材料导报》2016年第30卷第Z1期）
- 语种：中文
- 分类号：TU528
- 学会代码：CLDB
- 会议名称：第一届先进材料前沿学术会议
- 会议地点：中国陕西西安
- 主办单位：《材料导报》杂志社
- 学会名称：材料导报编辑部
- 页数：5
- 文件大小：1085k
- 原文格式：O
- 会议级别：全国
摘要
再生骨料生产过程中产生的大量废弃混凝土微粉(Waste concrete dust,WCD)给生态环境造成了沉重的负荷,因此,回收利用废弃混凝土微粉具有重要的意义。研究了废弃混凝土微粉用作水泥基材料矿物外加剂的可行性。考虑到回收的废弃混凝土微粉在品质上具有较大的差异性,制备了6种不同品质的微粉,研究其对水泥砂浆力学性能的影响,并采用XRD、DSC/TC、FE-SEM等微观分析手段研究微粉对水泥水化产物和微观结构的影响。结果表明,废弃混凝土微粉加速了水泥的水化反应,增大了水泥砂浆微观结构的密实性,从而提高了水泥砂浆的力学性能。
Large quantities of waste concrete dust(WCD),a by-product manufacturing recycled aggregate,is now becoming an environmental burden.Recycling and utilization of WCD is a significant contribution to environment and sustainable development This paper studied the potential use of WCD as mineral admixture in cementitious materials.For the sake of effectively reusing WCD with different properties,six type of WCD were prepared to investigate the effects of WCD on the strength development of cement mortar.Also,XRD,DSC/TG,and FE-SEM analysis were performed to investigate the effects of WCD on the microstructure of cement mortar.The results indicate that utilization of WCD can accelerates the hydration process of cement at early age,and results in the denser and compacted microstructure,therefore increases the mechanical properties of cement mortar.
Large quantities of waste concrete dust(WCD),a by-product manufacturing recycled aggregate,is now becoming an environmental burden.Recycling and utilization of WCD is a significant contribution to environment and sustainable development This paper studied the potential use of WCD as mineral admixture in cementitious materials.For the sake of effectively reusing WCD with different properties,six type of WCD were prepared to investigate the effects of WCD on the strength development of cement mortar.Also,XRD,DSC/TG,and FE-SEM analysis were performed to investigate the effects of WCD on the microstructure of cement mortar.The results indicate that utilization of WCD can accelerates the hydration process of cement at early age,and results in the denser and compacted microstructure,therefore increases the mechanical properties of cement mortar.
引文
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2 Etxeberria M,Vazquez E,Mari A,et al.Influence of amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete[J].Cem Concr Res,2007,37(5):735.
3 Xiao J Z,Li J B,Zhang C.Mechanical properties of recycled aggregate concrete under uniaxial loading[J].Cem Concr Res,2005,35:1187.
4 Evangelista L,de Brito J.Mechanical behaviour of concrete made with fine recycled concrete aggregates[J].Cem Concr Compos,2007,29(5):397.
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7 Xiao J Z,Li W G,Fan Y H,et al.An overview of study on recycled aggregate concrete in China(1996—2011)[J].Constr Build Mater,2012,31:364.
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9 Shima H,Tateyashiki H,Matsuhashi R.et al.Life Cycle Analysis of high quality recycled aggregate with use of byproduct powder as soil stabilizer[J].Concr Res Technol,2004,15(1).81.
10 Chen X,Li Q Y,Yang X N.et al.Properties and application of recycled fine powder[J].J Qingdao Technological University,2013,34(3):17(in Chinese).陈雪.李秋义,杨向宁,等.再生微粉的性能及应用[J].青岛理工大学学报,2013,34(3):17.
11 Wu X M,Yang J J,Huang M.The influence of pulverized building refuse on the physical properties of cement[J].New Build Mater.2004(4):16(in Chinese).毋雪梅,杨久俊.黄明.建筑垃圾磨细粉作矿物掺合料对水泥物理力学性能的影响[J].新型建筑材料,2004(4):16.
12 Kim Y J.Choi Y W.Utilization of waste concrete powder as a substitution material for cement[J].Constr Build Mater,2012,30:500.
13 Zhang C S,Qi F.Experimental research on construction debris used for admixture[J].Techniques Equipment Environ Pollution Control,2004,5(9):40(in Chinese).张长森.祁非.建筑垃圾作水泥混合材的试验研究[J].环境污染治理技术与设备,2004.5(9):40.
14 Ahmari S,Ren X,Toufigh V,et al.Production of geopolymeric binder from blended waste concrete powder and fly ash[J].Constr Build Mater.2012,35:718.
15 Moon D J.Kim Y B.Ryou J S.An approach for the recycling of waste concrete powder as cementitious materials[J].J Ceram Process Res,2008,9(3):278.
16 Yang H S,Fang K H,Tu S J,et al.The effect and its mechanism of calcium carbonate on the cement based materials[J].Concrete,2006(6):32(in Chinese).杨华山.方坤河.涂胜金.等.石灰石粉在水泥基材料中的作用及其机理[J].混凝土.2006(6):32.
17 Mu S B,Sun Z Y.Su X P.Effects of crystal seeds on the early strength of slag cement[J].Cement Guide New Epoch.1997,3(4):40(in Chinese).牟善彬,孙搌亚,苏小萍.掺加晶种提高矿渣水泥早期强度的试验研究[J].新世纪水泥导报.1997,3(4):40.
18 Xu J.Experimental study on impact of different hydrated calcium silicates upon early strength of cement paste[J].Build Constr,2014,37(3):268(in Chinese).徐俊.水化硅酸钙晶种对水泥净浆早期强度影响的实验研究[J].建筑施工,2014,37(3):268.
19 Wang Z.Yang Y Z,Li J H.Performance of C-S-H phase nuclei and its effects on compressive strength of cement[J].Mater Sci Technol,2007,15(6):789(in Chinese).王政,杨英姿,李家和.水化硅酸钙晶种的制备及对水泥强度的影响[J].材料科学与工艺,2007,15(6):789.
20 Xue C Z,Shen A Q,Guo Y C,et al.Utilization of construction waste composite powder materials as cementitious materials in smallscale prefabricated concrete[J].Adv Mater Sci Eng,2016;l.
2 Etxeberria M,Vazquez E,Mari A,et al.Influence of amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete[J].Cem Concr Res,2007,37(5):735.
3 Xiao J Z,Li J B,Zhang C.Mechanical properties of recycled aggregate concrete under uniaxial loading[J].Cem Concr Res,2005,35:1187.
4 Evangelista L,de Brito J.Mechanical behaviour of concrete made with fine recycled concrete aggregates[J].Cem Concr Compos,2007,29(5):397.
5 Katz A.Properties of concrete made with recycled aggregate from partially hydrated old concrete[J].Cem Concr Res,2003,33(5),703.
6 Poon C S,Shui Z H,Lam L.Effect of microstructure of ITZ on compressive strength of concrete prepared with recycled aggregates[J].Constr Build Mater,2004,18(6).461.
7 Xiao J Z,Li W G,Fan Y H,et al.An overview of study on recycled aggregate concrete in China(1996—2011)[J].Constr Build Mater,2012,31:364.
8 Behera M,Bhattacharyya S K,Minocha A K,et al.Recycled aggregate from C&D waste&its use in concrete—A breakthrough towards sustainability in construction sector:A review[J].Constr Build Mater,2014,68:501.
9 Shima H,Tateyashiki H,Matsuhashi R.et al.Life Cycle Analysis of high quality recycled aggregate with use of byproduct powder as soil stabilizer[J].Concr Res Technol,2004,15(1).81.
10 Chen X,Li Q Y,Yang X N.et al.Properties and application of recycled fine powder[J].J Qingdao Technological University,2013,34(3):17(in Chinese).陈雪.李秋义,杨向宁,等.再生微粉的性能及应用[J].青岛理工大学学报,2013,34(3):17.
11 Wu X M,Yang J J,Huang M.The influence of pulverized building refuse on the physical properties of cement[J].New Build Mater.2004(4):16(in Chinese).毋雪梅,杨久俊.黄明.建筑垃圾磨细粉作矿物掺合料对水泥物理力学性能的影响[J].新型建筑材料,2004(4):16.
12 Kim Y J.Choi Y W.Utilization of waste concrete powder as a substitution material for cement[J].Constr Build Mater,2012,30:500.
13 Zhang C S,Qi F.Experimental research on construction debris used for admixture[J].Techniques Equipment Environ Pollution Control,2004,5(9):40(in Chinese).张长森.祁非.建筑垃圾作水泥混合材的试验研究[J].环境污染治理技术与设备,2004.5(9):40.
14 Ahmari S,Ren X,Toufigh V,et al.Production of geopolymeric binder from blended waste concrete powder and fly ash[J].Constr Build Mater.2012,35:718.
15 Moon D J.Kim Y B.Ryou J S.An approach for the recycling of waste concrete powder as cementitious materials[J].J Ceram Process Res,2008,9(3):278.
16 Yang H S,Fang K H,Tu S J,et al.The effect and its mechanism of calcium carbonate on the cement based materials[J].Concrete,2006(6):32(in Chinese).杨华山.方坤河.涂胜金.等.石灰石粉在水泥基材料中的作用及其机理[J].混凝土.2006(6):32.
17 Mu S B,Sun Z Y.Su X P.Effects of crystal seeds on the early strength of slag cement[J].Cement Guide New Epoch.1997,3(4):40(in Chinese).牟善彬,孙搌亚,苏小萍.掺加晶种提高矿渣水泥早期强度的试验研究[J].新世纪水泥导报.1997,3(4):40.
18 Xu J.Experimental study on impact of different hydrated calcium silicates upon early strength of cement paste[J].Build Constr,2014,37(3):268(in Chinese).徐俊.水化硅酸钙晶种对水泥净浆早期强度影响的实验研究[J].建筑施工,2014,37(3):268.
19 Wang Z.Yang Y Z,Li J H.Performance of C-S-H phase nuclei and its effects on compressive strength of cement[J].Mater Sci Technol,2007,15(6):789(in Chinese).王政,杨英姿,李家和.水化硅酸钙晶种的制备及对水泥强度的影响[J].材料科学与工艺,2007,15(6):789.
20 Xue C Z,Shen A Q,Guo Y C,et al.Utilization of construction waste composite powder materials as cementitious materials in smallscale prefabricated concrete[J].Adv Mater Sci Eng,2016;l.
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