건축재료실험 콘크리트 배합설계 보고서/레포트

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"건축재료실험 콘크리트 배합설계 보고서/레포트"에 대한 내용입니다.

목차

1. 서론 ························································································································································ 4
가. 실험의 필요성 ····································································································································· 4
나. 실험 내용 및 방법 ····························································································································· 4
1) 조건에 맞는 콘크리트를 제조하기 위한 배합설계 ········································································ 4
2) 콘크리트 제조 ······································································································································· 4
3) 슬럼프 테스트 ······································································································································· 5
4) 콘크리트의 강도 시험용 공시체 제작 ······························································································ 5

2. 실험 ························································································································································ 6
가. 조건에 맞는 콘크리트를 제조하기 위한 배합설계 ······································································ 6
나. 콘크리트 제조 ····································································································································· 8
다. 슬럼프 테스트 ··································································································································· 12
라. 콘크리트의 강도 시험용 공시체 제작 ·························································································· 15

3. 결과분석 ·············································································································································· 18

4. 결론 ······················································································································································ 19

본문내용

가. 실험의 필요성
시멘트와 물을 혼합한 것을 시멘트 페이스트(cement paste), 시멘트 페이스트에 잔골재를 혼합한 것을 모르타르(mortar), 모르타르에 굵은 골재와 콘크리트의 성능향상을 위한 혼화재료를 혼합한 것을 콘크리트(concrete)라고 한다.
일반적으로 시행되는 콘크리트 공사의 순서는 양질의 재료를 선택하게 되며, 선택된 재료에 대해 조사, 계량, 혼합, 타설, 양생의 순서로 진행된다. 따라서 콘크리트가 소요의 강도를 갖고, 워커빌리티가 양호하고 균질하며 내구성이 큰 콘크리트를 얻기 위해서는 재료의 선택이 적절하고 배합이 완전하고 우수한 시공이 이루어져야 한다. 배합이란 콘크리트에 들어가는 재료인 물, 시멘트, 잔골재, 굴은 골재 및 혼화재료 등의 여러 재료의 혼합비율을 의미한다. 콘크리트의 경우 워커빌리티, 공기량, 단위중량, 골재의 분리 등과 경화된 콘크리트의 경우 강도, 내구성, 수밀성 등은 배합에 의해 크게 변화한다. 그러므로 배합설계는 소요의 성질을 갖춘 콘크리트가 얻어질 수 있도록 실시하는 것이다.
‘건축구조재료실험 CHAPTER 4. 콘크리트의 배합설계’를 참고하여 p.80의 예제 4-1을 참고하여 조건에 맞게 콘크리트를 제조하기 위한 배합설계를 해보고 이것을 통해 직접 굳지 않은 콘크리트를 만들어보고 슬럼프 테스트를 통해서 슬럼프 값이 어떻게 되는지 궁금하였다. 또한 강도 시험용 공시체를 제작해보기 위하여 실험을 하게 되었다.
나. 실험 내용 및 방법
1) 조건에 맞는 콘크리트를 제조하기 위한 배합설계
가) 설계기준강도 :        
나) 슬럼프 : , 모래의 조립률 : 2.98, 모래 : 이하, 굵은 골재의 최대치수
: , 시멘트 비중 : 3.15, 모래의 비중 : 2.6, 자갈비중 : 2.6, 자갈의 단위용적
중량 :  , 공기량 : 1%, 콘크리트 타설 후 28일간 예상평균기온 : 17°C, 콘크리트 강도의 표준편차  = 
다) 콘크리트의 타설량 :  ×    ×   2EA,  ×  ×   1EA를 만드는 데 필요한 재료량 산출

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