Diagonal Reinforcement is a effective bar arrangement method to prevent the shear failure of RC members, widely used for RC members of small shear span ratio. This Guideline has been published by Architectural Institute of Japan in this February. Bending and shear strength of this members add diagonal reinforcement strength to parallel reinforcement strength. And, as the point of contrary flexure is apart from the center of member, the strength is decreasing. It includes the allowable stress design and the ultimate strength design. The adjustment of “Standard for Structural Calculation of Reinforced Concrete Structures 2010” are taken.
In this paper, the state of the art of the studies on the three particular shaped interior beam-column joints in the plane frame is described. At present, the equations of joint shear strength for the shape of exterior and interior joint are proposed. But these proposed equations do not reflect the influence of aspect ratio of joint, the mechanical behavior of beam-column assemblage with one-sided eccentricity and that of beam-column assemblage with different floor levels on both sides of column.
Crushed stone powder can be a promising material used for the purpose of increasing the qualities of concrete. Such crushed stone powder is limited to what passes through a 150-micrometer sieve in which the by-product is separated and/or ground at the time of manufacturing of a crushed stone and/or a crushed sand by dry process in the plant. Actual quality conditions studies of crushed stone powder and raw crushed stone powder are reported in which studies items are moisture content, density, percent flow, activity index, 75-micrometer sieve remains ratio and Methylene Blue absorption specified in TR A 0015 (Crushed stone powder for concrete). The quality of crushed stone powder is proposed in the first JIS A 5041 (Crushed stone powder for concrete) which was published at Spring of 2009 after withdrawal of TR A 0015.