摘要:
A method using retardant to inhibit solidification of slurried fly ash particles that were collected on a collection surface. The slurried particles are transported in a pipeline to a collection or disposal site during or after the addition of the retardant to the slurry. The retardant can be a dispersant, a deflocculant, a scale inhibitor or a sequestering agent such as a phosphate, organic phosphate, polymer, and mixtures thereof.
摘要:
Substantially hydrated cementitious particulates useful for delivering admixtures and additives into adhesives, coatings, paints, and other matrix compositions such as cement, concrete, masonry, mortar, fireproofing, shotcrete, and others. Preferred embodiments include intermixing at least one admixture, water, and hydratable cementitious binder to provide a substantially hydrated hardened mass and comminuting the hardened mass into particulates. Alternatively, or in addition, one or more admixtures may be coated onto the external surface area of the particulates, which are microscopically granulosic, to provide accurate and high level loading.
摘要:
The present invention is related to a calcium tartrate plaster retarding composition, characterised in that it has a mean particle size lower than 30 &mgr;m. The present invention is also related to the plaster comprising said composition and to the preparation process of said composition.
摘要:
The invention provides an antibacterial agent for concrete comprising a silver compound, a copper compound and an ion-retaining compound; a concrete composition comprising the antibacterial agent; and a concrete product produced from the concrete composition. The concrete composition containing the antibacterial agent and the concrete product produced using the concrete composition show excellent antibacterial effect against causative bacteria of the corrosion of concrete such as sulfur reducing bacteria, sulfur oxidizing bacteria and carboxylic acid-producing bacteria, in particular, in sewage treatment plants.
摘要:
A cementitious shotcrete composition comprising a blend of the following range of ingredients in the following percentages by weight: cement 50% to 99% zeolite 0.3% to 49.3% barite 0.7% to 49.7%