基于流变特性新拌水泥混凝土质量在线监控试验方法

发布时间：2018-05-29 00:02

本文选题：道路工程 + 新拌水泥混凝土　；参考：《公路交通科技》2014年08期

【摘要】：为了达到在线监控新拌水泥混凝土质量的目的,采用改造的室内用水泥混凝土搅拌机,实现了在水泥混凝土搅拌过程中扭矩、转速数据地在线采集。通过改造的室内用水泥混凝土搅拌机,研究了新拌水泥混凝土坍落度与流变参数屈服应力和塑性黏度的关系,建立了新拌水泥混凝土坍落度与屈服应力和塑性黏度的关系式,得出屈服应力是影响新拌水泥混凝土坍落度的主要因素,可以用在线采集屈服应力数据来预测出机混凝土的坍落度,从而为在线监控新拌水泥混凝土质量提供了一定的试验依据。研究了新拌水泥混凝土坍落度与流变学指标扭矩的关系,建立了混凝土坍落度与扭矩之间的关系式,并得出了坍落度与扭矩之间的经验关系表,为在线监控新拌水泥混凝土质量提供了相应的试验方法。
[Abstract]:In order to achieve the purpose of on-line monitoring the quality of fresh cement concrete, a modified indoor cement concrete mixer is adopted to realize the on-line collection of torque and rotational speed data in the process of cement concrete mixing. The relationship between slump of fresh cement concrete, yield stress and plastic viscosity of fresh cement concrete was studied by means of the modified cement concrete mixer, and the relationship between slump and yield stress and plastic viscosity of fresh cement concrete was established. It is concluded that yield stress is the main factor affecting slump of fresh cement concrete, and the slump of machine concrete can be predicted by on-line collecting yield stress data. Thus, it provides a certain experimental basis for on-line monitoring the quality of fresh cement concrete. The relationship between slump and rheological index torque of fresh cement concrete is studied, the relationship between slump and torque of concrete is established, and the empirical relation table between slump and torque is obtained. The test method is provided for on-line monitoring the quality of fresh cement concrete.
【作者单位】：陆地交通气象灾害防治技术国家工程实验室;云南省交通规划设计研究院;交通运输部公路科学研究院;河北省高速公路石安管理处;
【基金】：西部交通运输建设科技项目(2011 318 223 710)
【分类号】：U414

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