The purpose of the present invention is to suppress the formation of lumps and uniformly knead a material. A kneading device 10 is provided with: a vibration sieve 24 for causing cement, fly ash and quicklime to pass therethrough by means of vibration; a water tank 26 for storing a portion of kneading water; and a h...

The present invention improves construction accuracy when constructing by suppressing a positional shift of a decorative member of a precast wall body. The present invention produces a precast wall body 10 by providing a precast wall body mold 20 obtained by inserting a joint mold 40 into a space S between a plurali...

[Problem] To provide a method for safely and efficiently manufacturing a concrete product in which carbon dioxide is fixed and a jig which can be used in this method. [Means for Solving the Problem] The manufacturing method of a concrete product includes: injecting first ready-mixed concrete into a mold; forming a...

[Problem] To provide a concrete product in which a large amount of carbon dioxide is fixed and a manufacturing method thereof. [Means for Solving the Problem] A concrete block which is a concrete product has a first concrete region and a second concrete region located inside the first concrete region. A part of a su...