2.7 Shrinkage
- Theoretical value: (a=35, : Maximum Shrinkage Strain Ratio)
- The process of finding 'a'
1. Arranging excel data
2. Finding 'a' with using a grapher program
(Converting Excel data into graph shape)
(Standardization of graph through regression analysis)-회귀분석을 통한 그래프 평균화
(Finding 'a' with using shrinkage equation)
3. Finding 'a'
strength obtained from tests of the double
axial loads P notation refers to the value
calculated by dividing .
Shear Strength
-An intersecting point of the shear stress axis and the line
which contacts uniaxial compressive circle and tensile circle
in Mohr's stress test.
2. METHOD OF CONCRETE
STREN
♧ 역사적 배경
콘크리트의 역사를 보면 B.C. 300년경 이집트에서 석회석을 이용한 몰탈이 시작된 이후 A.D.126년에 로마의 펜티온 신전의 돔이 콘크리트 구조물로 축조되었으며, 18세기 이후에서야 영국인 Joseph Aspin 등에 의해 포틀랜드 시멘트가 최초로 제작되어 오늘날 시멘트콘크리트의 시초가 되었
concrete construction takes 30~35% if money takes in framed constructions, concrete is dense in construction fee.
- Stronger stress resistance in compression than other materials.
- Good Durability, Fire endurance, Water resistance, Insulation of sound
- Higher compression strength than other materials
- No limitation in shape or size(can form to any shape)
- Can make a particular strengt