Ca2+ ELUTION AMOUNT TEST METHOD OF SLUG, AND EVALUATION METHOD OF SLUG

摘要

PROBLEM TO BE SOLVED: To provide a Ca²⁺ elution amount test method for measuring accurately and quickly the elution amount of Ca²⁺ eluted from slug, and an evaluation method for evaluating propriety of slug as a marine civil engineering and building material based on the elution amount of Ca²⁺ acquired by the Ca²⁺ elution amount test method.;SOLUTION: In the Ca²⁺ elution amount test method, slug is dipped into pure water having a mass ratio 1,000 times or more as high as the mass of the slug, and pH after dipping the slug is measured, and the Ca²⁺ elution amount from the slug is determined based on the measured pH value. In the evaluation method of slug, the slug is classified by granularity, and the Ca²⁺ elution amount classified by the granularity is determined by using the Ca²⁺ elution amount test method, and the Ca²⁺ elution amount from the slug before being classified is determined by using the determined Ca²⁺ elution amount classified by the granularity and a granularity distribution of the slug determined by classifying the slug by the granularity.;COPYRIGHT: (C)2009,JPO&INPIT