工程资料期末测验填空题、计算温习范围(国外英文资料).docVIP

工程材料期末考试填空题、计算复习范围(国外英文资料) The material mechanical properties of steel reinforced concrete Concrete specifications stipulates that the strength of the concrete is the strength of the concrete. The dimension of the test block for measuring concrete cube strength is a cube with a length of 150mm. The strength grade of concrete is divided by cubic strength, divided into 14 grades. 4, used in the steel reinforced concrete structure can be divided into two classes: there are obvious yield point of steel and no obvious yield point steel, usually call them for mild steel and hardened steel. The steel bar is divided into two kinds, which can be divided into two kinds: plain and steel. 6, HPB235, HRB335, HRB400, RRB400 for signs: 7, for no obvious yield point steel, usually apply equivalent to the residual strain for the stress as a nominal yield point, called the conditions to yield strength. 8, for steel has obvious yield point, need to test the index yield strength, ultimate tensile strength ft plastic cold bending properties are four. For steel bars without obvious yield points, the test indexes have the limit tensile strength of the ft plastic performance Such as the three. 10, steel bar and concrete is two kinds of different materials, they can work together very well because between steel and concrete bond between steel bar and the linear expansion coefficient of concrete material close to the concrete can be wrapped steel. The bonding force between the steel and concrete is made up of the force of the friction force. Among them The mechanical bite is the largest. 12, the ultimate compressive strain of concrete including elastic strain and plastic strain two parts, the larger the plastic part, show that the stronger the deformation ability, the better the ductility. The method of steel rebar processing is cold drawing and cold drawing. The steel bar that has the obvious yield point is used as the standard value of the strength of the steel. The ratio of the yield str