CONCRETE SPECIMEN FOR UNIAXIALLY-CONFINED CRACK TEST AND MANUFACTURING TOOL THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a concrete specimen for a uniaxially-confined crack test, which can estimate a drying shrinkage crack even in concrete having small drying shrinkage strain for a relatively short time.;SOLUTION: A concrete specimen 10 for a uniaxially-confined crack test includes: a planar concrete member 11 including planarly-rectangular confinement parts 111 positioned at both ends, a free shrinkage part 112 which is positioned between the confinement parts 111 and whose width is smaller than that of the confinement parts 111, and connection parts 113 for connecting the confinement parts 111 and the free shrinkage part 112; two confinement shape steels 121 attached to a width-direction outside of each of the confinement parts 111; connection rods 123 for connecting the two confinement shape steels 121; fixing parts 131 on which screw processing is performed; a non-fixing part 132 which is covered by a teflon sheet 15, so as not to contact with concrete of the concrete member 11; and a round steel 13 embedded in the center of the concrete member 11.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT