| 摘要 |
The invention concerns a method for producing a concrete with variable density, particularly within the range 800-2000 kg/m<3>, by mixing a conventional concrete mass with a porousity agent, consisting of water, cement and a foaming agent. The finished concrete is including a large number of smaller pores. The strength of the concrete can, if desired, be kept high, e.g. at least 12 MPa, at the density 1600 kg/m<3>. |
