Aqueous solutionAn aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, also known as sodium chloride (NaCl), in water would be represented as Na(aq) + Cl(aq). The word aqueous (which comes from aqua) means pertaining to, related to, similar to, or dissolved in, water.
Silica gelSilica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular three-dimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum. In the last case, the material is properly called silica xerogel.
CementHydraulic binder used in the composition of mortar and concreteCement powder being poured from a bag, ready to be mixed with aggregates and water.A cement is a binder used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel (aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete.
Sodium pyrosilicateSodium pyrosilicate is the chemical compoundNa6Si2O7. It is one of the sodium silicates, specifically a pyrosilicate, formally a salt of the unstable pyrosilicic acidH6Si2O7. StructureThe anhydrous solid has the triclinic crystal structure. The Si2O7 anions are arranged in layers parallel to the (100) plane, with the sodium cations distributed in 24 distinct crystallographic positions, coordinated by 4 to 6 near oxygen atoms.
Sodium metasilicateSodium metasilicate is the chemical substance with formula Na2SiO3, which is the main component of commercial sodium silicate solutions. It is an ionic compound consisting of sodium cations Na+ and the polymeric metasilicate anions [–SiO2−3–]n. It is a colorless crystalline hygroscopic and deliquescent solid, soluble in water (giving an alkaline solution) but not in alcohols.
Sodium orthosilicateSodium orthosilicate is the chemical compound with the molecular formula Na4SiO4. It is one of the sodium silicates, specifically an orthosilicate, formally a salt of the unstable orthosilicic acid H4SiO4.
RefractoryIn materials science, a refractory (or refractory material) is a material that is resistant to decomposition by heat or chemical attack and that retains its strength and rigidity at high temperatures. They are inorganic, non-metallic compounds that may be porous or non-porous, and their crystallinity varies widely: they may be crystalline, polycrystalline, amorphous, or composite.
Chemical compoundA chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound. A compound can be transformed into a different substance by a chemical reaction, which may involve interactions with other substances.
PolymerIUPAC definitionA polymer is a substance composed of macromolecules. A macromolecule is a molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass.
Passive fire protectionPassive fire protection (PFP) is components or systems of a building or structure that slows or impedes the spread of the effects of fire or smoke without system activation, and usually without movement. Examples of passive systems include floor-ceilings and roofs, fire doors, windows, and wall assemblies, fire-resistant coatings, and other fire and smoke control assemblies. Passive fire protection systems can include active components such as fire dampers.
AdhesiveAdhesive, also known as glue, cement, mucilage, or paste, is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation. The use of adhesives offers certain advantages over other binding techniques such as sewing, mechanical fastenings, and welding.
AlkaliIn chemistry, an alkali () or base is a hydroxide of any of either the alkali metal which are Group Is-block elements, or the alkaline earth metal which are Group II s-block. Alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0. The adjectivesalkaline and, less often, alkalescent are commonly used in English as a synonyms for basic, especially for bases soluble in water.*As an Amazon Associate I earn from qualifying purchases.