In former paper(Part 1), a new method to presume temperatures in the concrete with lignin sulfonic acid admixture suffered from fire was proposed by using the method of ultraviolet absorption spectra(UV spectra). In this paper(Part 2), the validity of this presumption method was verified by fire tests and the method was applied to an actual fire. The influence of burning exhaust on the method was scarcely recognized. And moreover, for the concrete with naphtaline sulfonic acid admixture, its heated temperatures were presumed by the methods of UV spectra and quantative analysis.
