以鋼碴的化學及物理特性預測含鋼碴混凝土的工程性質可行性研究(3/3)

In order to avoid the occurrence of slag houses, the government controls the useof suspected slag aggregates in building concrete. The current control practiceswill be rethinked in the future due to the increasing shortage of aggregateresources. This research is to find solutions for future challenges. This researchrefers to the concept of a drop of blood for cancer testing, and conceives of usinga small amount of slag to detect its chemical and physical properties to predictthe expansion, strength and durability of slag aggregate concrete, providing a fastand reliable aggregate quality assessment for the future method.The project will be implemented in three years. In the first year, it is planned toexplore the chemical and physical properties of slag, including: f-CaO and f-MgOcontent, pH value of slag in water, XRF elements, XRD compounds and opticalmicroscope measurement results. Comparing with the autoclave expansion of theslag mortar rod, the correlation between the chemical and physical properties ofslag and the expansion of the slag was obtained, and the feasibility of theapplication of digital image measurement and analysis technology was tried. Inthe second year, it is planned to compare the relationship between pH value,chemical, microscopic analysis, etc. with the expansion of slag and slag mortarrods, and propose a method for evaluating the expansion behavior of slagcontaining concrete using the chemical and physical properties of slag. In thethird year, it is planned to conduct compressive strength and durability tests, andpropose methods to evaluate the strength and durability of slag concrete usingthe chemical and physical properties of slag. At the same time, the quality of slagcan be improved by grasping the characteristics of slag. Finally, the pHmeasurement technology is used to evaluate the detection process of aggregatewithout harmful slag, the process of using the chemical and physical properties ofslag to evaluate the expansion behavior of slag concrete, and the process ofusing the chemical and physical properties of slag to evaluate the strength anddurability of slag concrete, and the quality improvement methods of slagaggregate.