Synthesis of a nano organo-silicon compound for building materials waterproofing, using heteropolyacids as a green and eco-friendly catalyst

Three heteropolyacids were used in the synthesis of a nano organo-silicon compound for building materials waterproofing. Characterization of prepared material by transmission electron microscopy (TEM) showed that the product is uniform and the mean size is about 60–70 nm. This size rang causes easily penetration inside the pores and sub-branches of pores in the building materials and provide chemical molecular level hydrophobicity. It is non-flammable and can be sprayed, brushed or rolled on the building materials surface. The standard tests, including water uptake test, water saturation, Rilem test, and accelerated weathering test confirmed the excellent waterproofing activity of the prepared nano material.

Keggin and Preyssler heteropolyacids as non-corrosive, stable, non-toxic and environmentally friendly catalysts were used in the synthesis of a nano organo-silicon material with the mean size of 60–70 nm for waterproofing of building materials. The standard tests confirmed the excellent waterproofing activity of the prepared nano material for the brick, concrete and stone.Figure optionsDownload as PowerPoint slideHighlights
► Green heteropolyacid catalysts used in synthesis of nano organo-silicon materials.
► The synthesized non-flammable nano organo-silicon has the mean size of 60–70 nm.
► It can provide molecular level hydrophobicity for building materials, chemically.
► Standard tests confirm the great waterproofing activity of prepared nano material.