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骨料级配及砂浆富余系数对防辐射混凝土性能的影响
The Influence of Aggregate Gradation and Mortar Surplus Coefficient on Performance of Radiation Shielding Concrete
2019年第6期
防辐射混凝土;重骨料;相对沉降系数;骨料级配;砂浆富余系数
Radiation shielding concrete; Heavyweight aggregates; Relative settling coefficient; Aggregate gradation; Mortar surplus coeffic
2019年第6期
10.19761/j.1000-4637.2019.06.001.04
国家重点研发计划资助(2017YFB0309902-2)。
王 蒙,曹 银,王 玲,吴 浩
中国建筑材料科学研究总院,绿色建筑材料国家重点实验室,北京 100024

王 蒙,曹 银,王 玲,吴 浩

王蒙,曹银,王玲,等.骨料级配及砂浆富余系数对防辐射混凝土性能的影响[J].混凝土与水泥制品,2019(6):1-4.

WANG M,CAO Y,WANG L,et al.The Influence of Aggregate Gradation and Mortar Surplus Coefficient on Performance of Radiation Shielding Concrete[J].China Concrete and Cement Products,2019(6):1-4.

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摘 要:为解决使用重骨料防辐射混凝土易分层离析的问题,采用重晶石和磁铁矿为粗骨料,制备了防辐射混凝土,并研究了骨料级配、砂浆富余系数对其工作性及抗压强度的影响。结果表明,以Dinger-Funk方程优化粗骨料级配后,粗骨料空隙率下降,用两种类型骨料制备的混凝土相对沉降系数减小,坍落度增大,28 d抗压强度提高;分别以砂浆富余系数1.4、1.6、1.8、2.0拌合混凝土,相对沉降系数随砂浆富余系数的增大呈先减小后增大的趋势,坍落度和28 d抗压强度呈先增大后减小的趋势,两种类型重骨料混凝土最优砂浆富余系数均为1.8。 Abstract:In order to solve the severe segregation of irradiation resistant concrete due to using heavyweight aggregates, the effects of aggregate gradation and mortar surplus coefficient on the workability and compressive strength of barite concrete and magnetite concrete were studied. The Dinger-Funk equation was used to optimize the aggregate gradation. The results show that after the optimized grading, the voidage of the aggregate decreases, the relative settling coefficient of the concrete mixed with the two types of aggregates respectively decrease, the slump and 28 d compressive strength increase. The concrete was mixed with the mortar surplus coefficient of 1.4, 1.6, 1.8 and 2.0. The results show that the relative settling coefficient decreases first and then increases with the increase of the mortar surplus coefficient, the slump and 28 d compressive strength increase first and then decrease. The optimum mortar surplus coefficients of the two types of heavyweight aggregate concrete are all 1.8.
英文名 : The Influence of Aggregate Gradation and Mortar Surplus Coefficient on Performance of Radiation Shielding Concrete
刊期 : 2019年第6期
关键词 : 防辐射混凝土;重骨料;相对沉降系数;骨料级配;砂浆富余系数
Key words : Radiation shielding concrete; Heavyweight aggregates; Relative settling coefficient; Aggregate gradation; Mortar surplus coeffic
刊期 : 2019年第6期
DOI : 10.19761/j.1000-4637.2019.06.001.04
文章编号 :
基金项目 : 国家重点研发计划资助(2017YFB0309902-2)。
作者 : 王 蒙,曹 银,王 玲,吴 浩
单位 : 中国建筑材料科学研究总院,绿色建筑材料国家重点实验室,北京 100024

王 蒙,曹 银,王 玲,吴 浩

王蒙,曹银,王玲,等.骨料级配及砂浆富余系数对防辐射混凝土性能的影响[J].混凝土与水泥制品,2019(6):1-4.

WANG M,CAO Y,WANG L,et al.The Influence of Aggregate Gradation and Mortar Surplus Coefficient on Performance of Radiation Shielding Concrete[J].China Concrete and Cement Products,2019(6):1-4.

摘要
参数
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参考文献
引用本文

摘   要:为解决使用重骨料防辐射混凝土易分层离析的问题,采用重晶石和磁铁矿为粗骨料,制备了防辐射混凝土,并研究了骨料级配、砂浆富余系数对其工作性及抗压强度的影响。结果表明,以Dinger-Funk方程优化粗骨料级配后,粗骨料空隙率下降,用两种类型骨料制备的混凝土相对沉降系数减小,坍落度增大,28 d抗压强度提高;分别以砂浆富余系数1.4、1.6、1.8、2.0拌合混凝土,相对沉降系数随砂浆富余系数的增大呈先减小后增大的趋势,坍落度和28 d抗压强度呈先增大后减小的趋势,两种类型重骨料混凝土最优砂浆富余系数均为1.8。
Abstract:In order to solve the severe segregation of irradiation resistant concrete due to using heavyweight aggregates, the effects of aggregate gradation and mortar surplus coefficient on the workability and compressive strength of barite concrete and magnetite concrete were studied. The Dinger-Funk equation was used to optimize the aggregate gradation. The results show that after the optimized grading, the voidage of the aggregate decreases, the relative settling coefficient of the concrete mixed with the two types of aggregates respectively decrease, the slump and 28 d compressive strength  increase. The concrete was mixed with the mortar surplus coefficient of 1.4, 1.6, 1.8 and 2.0. The results show that the relative settling coefficient decreases first and then increases with the increase of the mortar surplus coefficient, the slump and 28 d compressive strength increase first and then decrease. The optimum mortar surplus coefficients of the two types of heavyweight aggregate concrete are all 1.8.

关键词:
防辐射混凝土;重骨料;相对沉降系数;骨料级配;砂浆富余系数
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(1)根据Dinger-Funk紧密堆积方程优化后的重晶石、磁铁矿空隙率降低,以优化骨料拌合的混凝土降低了分层沉降现象,且坍落度和28 d抗压强度相较于初始骨料拌合的混凝土有所提高。
(2) 随砂浆富余系数在1.4~2.0范围内逐渐增大,重晶石、磁铁矿混凝土的相对沉降系数呈先减小后增大的规律,混凝土坍落度和28 d抗压强度呈先增大小后减小的规律。两种骨料混凝土的最佳砂浆富余系数均为1.8。

[1] 田力.2018核能行业展望[J].电器工业,2018(1):39-43.
[2] 李政统,黄红俊.重晶石防辐射混凝土的制备与泵送施工[J].混凝土与水泥制品,2017(9):82-84.
[3] Kinno M,Kimura K,Nakamura T.Raw materials for low-activation concrete neutron shields[J].Journal of nuclear science and technology,2002,39(12):1275-1280.
[4] Amritphale S S,Anshul A,Chandra N,et al.A novel process for making radiopaque materials using bauxite—Red mud[J].Journal of the European Ceramic Society,2007,27(4):1945-1951.
[5] 伍崇明,丁德馨,张辉赤.屏蔽混凝土配合比设计方法研究[J].核动力工程,2007,28(5):124-127.
[6] Fillmore D L,Winston P L,Morton S L,et al.The long-term performance of concrete in nuclear applications[C].ASME 2005 Pressure Vessels and Piping Conference.American Society of Mechanical Engineers,2005:639-648.
[7] 潘智生,赵晖,寇世聪.防辐射混凝土研究现状、存在问题及发展趋势[J].武汉理工大学学报,2011(1):45-51.
[8] 李国刚.防辐射高性能混凝土材料研究[D].武汉:武汉理工大学,2010.
[9] 陈清己.重晶石防辐射混凝土配合比设计及其性能研究[D].长沙:中南大学,2010.
[10] 杨帆.防辐射混凝土应用与施工技术研究[D].天津:河北工业大学,2015.
[11] Hüsken G,Brouwers H J H.A new mix design concept for earth-moist concret:A theoretical and experimental study[J].Cement and Concrete Research,2008,38(10):1246-1259.
[12] 吴中伟.高性能混凝土—绿色混凝土[J].混凝土与水泥制品,2000(1):3-6.

王蒙,曹银,王玲,.骨料级配及砂浆富余系数对防辐射混凝土性能的影响[J].混凝土与水泥制品,2019(6):1-4.

WANG M,CAO Y,WANG L,et al.The Influence of Aggregate Gradation and Mortar Surplus Coefficient on Performance of Radiation Shielding Concrete[J].China Concrete and Cement Products,2019(6):1-4.

 

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