Abstract

Research on the characterization method of cement hydration progress - synchronous thermal analysis cement hydration progress is closely related to the strength of cement concrete materials. How to intuitively and effectively characterize cement hydration progress has been puzzling by researchers in this field. In this project, the content of various hydration products in the thermal analysis process of cement slurry and its variation law with age were obtained by simultaneous thermal analysis of the benchmark cement and the benchmark cement doped with early strength agent ZQ-1. By comparing the three DTG spectra of cement slurry mixed with early strength agent and blank benchmark cement slurry with maximum thermal weight loss on thermal decomposition, calcium hydroxide of hydration products with peak temperature between 400°C ~ 450°C can better characterize the effect of different admixtures on the hydration process of cement slurry. Early strength admixtures can better promote the early hydration of benchmark cement.

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