PCa reinforced concrete beam members for building and PCa reinforced concrete column members for building

摘要

A concrete molded member made of high fluidity concrete mixed with a small amount of fly ash and improved in various properties is provided. A PCa concrete molded member for building is molded by filling a molding material with a concrete material mainly composed of water, cement, fly ash, fine aggregate, and coarse aggregate. The content rate of the fly ash in the said concrete material is set to 40-80 kg / m ³ , and the compressive strength in a hardening state is 80 N / mm ² or more. In the concrete beam member 10 as a PCa concrete molded member for building, it is most desirable to set the content of fly ash in the concrete material to 70 to 80 kg / m ³ . [Selection] Figure 1