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인수검사시 Hydrometer법의 밀도 값과 플라이애시의 분말도간 상관관계 분석
문병룡 ( Moon Byeong-yong ),현승용 ( Hyun Seong-yong ),이재진 ( Lee Jae-jin ),송흥호 ( Song Heung-ho ),한민철 ( Han Min-cheol ),한천구 ( Han Cheon-goo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
There have been reports in the media about some refineries that omit the refining process and deliver raw material for reasons of cost reduction, shortening of production time, etc. Also, in most RMC factories acceptance inspection is not conducted on account of issues with the proficiency of the equipment and cost issues; instead only scores are relied upon. Therefore this study sought to analyze the relation between the value of the density of FA actually delivered to RMC companies, attained with the Hydrometer method, and its fineness, to see whether the quality of FA can be evaluated statistically. Results led to the conclusion that there is a problem in terms of credibility in the fineness of FA shown on the test report. Upon analyzing the difference between the fineness of FA as measured using Blaine`s air permeability method and its density of the Hydrometer method, the correlation was found to be satisfactory; therefore the possibility of a FA fineness quality evaluation could be proved as well.
Hydrometer법에 의한 밀도 값과 시험 성적서간 상관분석을 통한 플라이애시의 품질분석
문병룡 ( Moon Byeong-yong ),김태우 ( Kim Tae-woo ),이재진 ( Lee Jae-jin ),송흥호 ( Song Heung-ho ),한민철 ( Han Min-cheol ),한천구 ( Han Cheon-goo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
Basic lot tests via textile and visual examinations are conducted on FA carried into in-service RMCs. The system of evaluating quality by taking samples from each lot and examining them, or evaluating quality based on the score reports submitted by the deliverer during in-service training have on some instances been called into doubt as to their reliability in evaluating the quality of FA. Therefore this study sought to measure the density value of FA that is actually delivered to RMC companies according to the Hydrometer method and analyze its correlation to its test scores, to in turn analyze the reliability of the test reports and the characteristics of the quality of FA. The results led to the conclusion that the fineness and density marked on the score reports were problematic, and therefore accurate experiments and adjustment of significant digits on the test report are necessary.
액체밀도계에 의한 고로슬래그 미분말 분말도 신속평가에서의 영향인자 분석
문병룡 ( Moon Byeong-yong ),김민상 ( Kim Min-sang ),이제현 ( Lee Jea-hyeon ),주은희 ( Joo Eun-hui ),한민철 ( Han Min-cheol ),한천구 ( Han Cheon-goo ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
In this research, the blast-furnace slag powder using the hydrometer also attempted to analysis the influence factor due to the temperature change of water and sample, and the number of upside down turns at the time of rapid evaluation. As a result, the influence of the number of turn was not large, but was the temperature of the water and sample are greatly affected.