建筑垃圾再生骨料无机混合料的力学及抗冻性能

材料导报

2020, Vol. 34

Issue (Z1): 234-236

无机非金属及其复合材料

建筑垃圾再生骨料无机混合料的力学及抗冻性能

周文娟^1,2, 张志伟¹, 徐玉波³

1 北京建筑大学土木与交通工程学院,北京 100044;
2 工程结构与新材料北京工程研究中心,北京 100044;
3 中国城市环境卫生协会建筑垃圾管理与资源化工作委员会,北京 100044

Mechanical and Frost Resistance of Inorganic Binder Stabilized Construction WasteRecycled Aggregate

ZHOU Wenjuan^1,2, ZHANG Zhiwei¹, XU Yubo³

1 School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2 Beijing Engineering Research Center for Engineering Structure and New Materials, Beijing 100044, China;
3 China Association of Urban Environmental Committee of Construction Waste Management and Recycling, Beijing 100044, China

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摘要道路基层、底基层在使用无机混合料时对其强度要求较低,将建筑垃圾再生骨料用于无机混合料是当前建筑垃圾资源化的一种有效途径。本工作研究了胶凝材料和再生骨料组成对无机混合料力学及抗冻性能的影响。结果表明,水泥掺量、再生骨料中混凝土颗粒含量的增加可提高无机混合料强度,在胶凝材料总量不变的前提下降低石灰掺量可提高无机混合料强度,再生骨料无机混合料的回弹模量为2 775~3 375 MPa,冻后残留抗压强度比最高可以达到88.4%。

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关键词: 再生骨料无机混合料强度抗冻性能

Abstract: The road base layer and subbase layer have lower requirements for their strength when using inorganic binder stabilized aggregate. The use of recycled construction waste aggregates forinorganic binder stabilized aggregate is an effective way to recycle construction waste. In this paper, the effects of the composition of cementitious materials and recycled aggregates on the mechanical properties and frost resistance of inorganic binder stabilized aggregate were studied. The results show that the increase of cement content and the content of concrete particles in the recycled aggregate can increase the strength of the inorganic binder stabilized aggregate. Under the premise of the same total amount of gelling material, reducing the amount of lime can increase the strength of the inorganic binder stabilized aggregate. The rebound modulus value of the material is 2 775—3 375 MPa, and the maximum residual compressive strength ratio after freezing can reach 88.4%.

Key words: recycled aggregates inorganic binder stabilized aggregate strength antifreeze properties

发布日期: 2020-07-01

ZTFLH:

U414

基金资助: 国家重点研发计划项目(2017YFC0703305)

作者简介: 周文娟,北京建筑大学副教授,硕士研究生导师。2001年7月在北京建筑大学任教至今。任中国建筑垃圾管理与资源化工作委员会副秘书长;中国混凝土与水泥制品协会预拌混凝土分会专家;中国建筑科学研究院三星绿色建材评价机构专家。研究领域涉及建筑垃圾、尾矿等固体废弃物的资源化利用、预拌砂浆等理论与应用技术。特别是围绕建筑垃圾的管理与资源化,主持或主要参加完成来自北京市、国家发改委、国家工信部、国家能源基金会、亚洲银行技术援助等项目10余项,包括国家“十三五”课题,其中“建筑垃圾资源化关键技术与应用研究”获得华夏建设科技进步二等奖,北京市科技进步三等奖。作为主要人员编制国家、行业、地方标准12项,申报专利多项,发表论文20余篇。

引用本文:

周文娟, 张志伟, 徐玉波. 建筑垃圾再生骨料无机混合料的力学及抗冻性能[J]. 材料导报, 2020, 34(Z1): 234-236.
ZHOU Wenjuan, ZHANG Zhiwei, XU Yubo. Mechanical and Frost Resistance of Inorganic Binder Stabilized Construction WasteRecycled Aggregate. Materials Reports, 2020, 34(Z1): 234-236.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ1/234

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