Dry mortar mixture with grains of expanded glass

A dry mortar mixture comprising:

• a glass granulate comprising a glass mixture of expanded glass beads, said glass granulate having a grain size d/D 0/8, such that said glass granulate has grains of at least 0 and at most 8.0 millimeter diameter;
• and
• stone granules comprising a binding mixture of hydraulic binders and sand,
• wherein:
• said glass granulate is mixed in a ratio of between 1:1 and 1:3 with said stone granules, said stone granules being in a weight ratio of between 1:2 and 1:4;
• and
• wherein for the glass mixture:
• the intermediate d/D fraction 1.0/2.0 is absent, such that for the glass mixture all grain sizes between 1.0 and 2.0 mm are absent and grain sizes smaller than 1.0 mm and larger than 2.0 mm are present,
• the grain size distribution is around an average, so that an open structure is obtained, and
• a fraction relates to an undivided group of grain sizes.

A dry mortar mixture comprising:

• a glass granulate comprising a glass mixture of expanded glass beads, said glass granulate having a grain size with a discontinuous grain distribution d/D 0/8, such that said glass granulate has grains of at least 0 and at most 8.0 millimeter diameter;
• and
• stone granules comprising a dust poor binding mixture of hydraulic binders and sand,
• wherein:
• said glass granulate is mixed in a ratio of between 1:1 and 1:3 with said stone granules, said stone granules being in a weight ratio of between 1:2 and 1:4;
• and
• wherein for the glass mixture:
• the d/D fractions 0.5/1.0 are present and one or more intermediate grain sizes for the d/D 0/8 are absent such that grain sizes smaller and larger than the absent intermediate grain sizes are present,
• the grain size distribution is around an average, so that an open structure is obtained, and
• a fraction relates to an undivided group of grain sizes. for the glass mixture.