A waterproofing agent for concrete includes: 1-60 parts by weight of ferric ions; 1-60 parts by weight of carboxylate ions; 1-40 parts by weight of 8-hydroxyquinoline; and 1-50 parts by weight of pyrosulfate ions.

A waterproofing agent for concrete includes: 1-60 parts by weight of ferric ions; 1-60 parts by weight of carboxylate ions; 1-40 parts by weight of 8-hydroxyquinoline; and 1-50 parts by weight of pyrosulfate ions.

The present disclosure relates generally to building materials, such as building boards, having improved strength and reduced shrinkage. More particularly, the present disclosure provides building compositions comprising Struvite-K (KMgPO.sub.4.6H.sub.2O), Syngenite (K.sub.2Ca(SO.sub.4).sub.2.H.sub.2O), and one or more silicate additives suitable for use in building materials.

The present disclosure relates generally to building materials, such as building boards, having improved strength and reduced shrinkage. More particularly, the present disclosure provides building compositions comprising Struvite-K (KMgPO.sub.4.6H.sub.2O), Syngenite (K.sub.2Ca(SO.sub.4).sub.2.H.sub.2O), and one or more silicate additives suitable for use in building materials.

Various embodiments disclosed relate to cement activator compositions for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing in the subterranean formation a liquid cement activator composition including water, an alkali sulfate salt, a polyphosphate salt, and a stabilizer polymer.

Various embodiments disclosed relate to cement activator compositions for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing in the subterranean formation a liquid cement activator composition including water, an alkali sulfate salt, a polyphosphate salt, and a stabilizer polymer.

The invention relates to a process for preparing silica-coated particles of an inorganic expanding agent, the silica-coated particles and their use. The silica-coated particles show a delayed release of the expanding agent particularly in alkaline medium and at elevated temperatures. They are therefore useful in the oil and construction industry.

The invention relates to a process for preparing silica-coated particles of an inorganic expanding agent, the silica-coated particles and their use. The silica-coated particles show a delayed release of the expanding agent particularly in alkaline medium and at elevated temperatures. They are therefore useful in the oil and construction industry.

A sheet material with a cellular structure wherein the sheet material is produced by preparing a composition including PVC, a filler material and a plasticiser and providing a cellular structure within the composition prior to curing to form the sheet material. The composition may further include a cellular structure promoting agent. The sheet material with a cellular structure may be used in building applications and has advantageous sound attenuation, thermal conductivity, resilience and impact resistance properties.

A sheet material with a cellular structure wherein the sheet material is produced by preparing a composition including PVC, a filler material and a plasticiser and providing a cellular structure within the composition prior to curing to form the sheet material. The composition may further include a cellular structure promoting agent. The sheet material with a cellular structure may be used in building applications and has advantageous sound attenuation, thermal conductivity, resilience and impact resistance properties.