Polytechnic Institute Rensselaer in Troy, N. Y. Two -year experiments have proved that the addition of up to 10% of clay to fatty concrete not only increases its strength and water resistance, but also resistance to atmospheric effects.
Polytechnic Institute Rensselaer in Troy, N. Y. Two -year experiments have proved that the addition of up to 10% of clay to fatty concrete not only increases its strength and water resistance, but also resistance to atmospheric effects.
