A building Construction failure can occur either because they ignore the quality of reinforced concrete. Reinforced concrete is a composite material consisting of steel bars working together with concrete. This material can performe excellently because of bonding effect between the reinforcing steel and concrete. The reinforced concrete quality on a building construction is very dependent of the production process and its treatment. Any concrete in a concrete mixer and the same with the same mix design can result in different strengths. Therefore, the implementation of reinforced concrete constructions such as those used in columns, beams or floor plate should always evaluate their quality. The Bonding value will increase as a function of the quality of surrounding material, i.e. the concrete Improvement in concrete technology make possible to create a high strength or even very high strength concrete, while performance of steel bar’s bond can be measured by applying deformed bars. When the bond between steel -bars and concrete can be increased, the tension capacity of steel bars would enhanced. This is defined as the tension stiffening. effect a phenomena where the tensile strength of steel bars embedded in concrete is higher than those of bare bars. The degree of tension stiffening enhancement would be effect to the ratio steel-to-concrete strength.  The other side, the higher the concrete compression strength and the tension stiffening effect on the embedded bars. There are two types of testing are known in the construction of buildings and carried out on concrete quality, the Slump Test and Compression Test. Slump Test aims to demonstrate the workability (how muddy / watery / Muddy) a concrete mix. Press Testing is used to find out how much power can be achieved by the concrete. Concrete has a shrinkage, namely shortening of the concrete during the process of hardening and drying at constant temperature. Another is the creep, it can happen to concrete remains loaded in a long time. In concrete can happen short-term and long-term deflection. Concrete is a mixture of cement, coarse and fine aggregate, water, and additives. Especially for the concrete building is planned in such a way that the resulting concrete can be easily done and expenses incurred in accordance with the planned quality. Different compositions of concrete raw materials affect the properties of concrete produced. Concrete must have a high workability, has high cohesion at the plastic conditions, so the resulting concrete is strong enough and durable. Concrete quality is also planned to Consider the environment in the which the concrete will of the stand, for example in the waterfront environment, or for heavy loads, or extreme weather conditions. Concrete materials maker one of the which is cement. If the cement is increased, then the strength and durability of concrete will also increase. Cement with water to form a paste that will bind the aggregate starting from very large and rugged to the most subtle. Apart from cement, water is also an important ingredient in the manufacture of concrete. A cohesive and workable concrete can be achieved because of the water with the proper dose. addition of water will actually reduce the strength of concrete. Water to cement ratio is very influential on the strength and durability of concrete. In certain environments, water-cement ratio is limited, depending on the nature of corrosive or sulfate levels in the vicinity. High quality reinforced concrete is generally used for prestressed concrete (more…)