5 results about "Inorganic sulfate" patented technology

To provide a method for producing a hydraulic hardened body, which reduces the amount of energy consumption and the amount of CO2 discharge in material production and is excellent in producibility of a precast product.SOLUTION: A method for producing a hydraulic hardened body includes kneading and hardening a hydraulic composition containing a binder (A), an admixture (B), water, an aggregate, and an admixture, wherein the proportion of the admixture (B) in the total of the binder (A) and the admixture (B) is 2 mass% to 10 mass%. In the binder (A), the proportion of the high-early-strength portland cement is 20 mass% to 55 mass%, the proportion of the blast furnace slag fine powder is 45 mass% to 75 mass%, and the total of these two components accounts for 90 mass% or more of the whole. The admixture (B) contains organic calcium salts, inorganic calcium compounds, and inorganic sulfates, and has a CaO content of 53 mass% to 58 mass%, a SO3 content of 15 mass% to 20 mass%, a total alkali content of 2.5 mass% to 2.8 mass%, and an ignition loss of 20 mass% to 25 mass%.SELECTED DRAWING: None

The present invention aims to provide a porous body for secondary batteries that can be manufactured in a manner with good reactivity and high safety, and a method for manufacturing the same. The porous body for secondary batteries comprises a sulfonic acid-containing polymer. The sulfonic acid-containing polymer is a reaction product of a hydroxyl-containing polymer and an inorganic sulfate. The method for manufacturing the porous body for secondary batteries of the present invention includes: step (S1), preparing a porous body comprising the hydroxyl-containing polymer; and step (S2), immersing the porous body in an aqueous solution containing an inorganic sulfate, removing the porous body from the aqueous solution, and heating the porous body.

An object of the present invention is to provide a concrete composition having good fluidity retention, cohesiveness, and early strength development property. 【Solution means】A concrete composition containing a binder, a hardening accelerator for hydraulic materials, and water, wherein the binder content is 300 kg / m 3 or more, the water-binder ratio is 55% or less, and the addition amount of the hardening accelerator for hydraulic materials is 1 to 50 kg / m 3 and the hardening accelerator for hydraulic materials contains 20.0 to 80.0% by mass of calcium formate, 15.0 to 70.0% by mass of an inorganic calcium compound, and 0.5 to 30.0% by mass of an inorganic sulfate excluding calcium sulfate.

Provided is a hardening accelerator for hydraulic materials containing 1 to 65 % by mass of calcium sulfoaluminate, 0.5 to 75 % by mass of organic acid calcium salt, 1 to 55 % by mass of inorganic calcium compound, and 0.5 to 45 % by mass of an inorganic sulfate excluding calcium sulfate.

Composition comprising a polyphosphate, an amine and an inorganic sulfate compound for enhancing the workability and / or the strength development of hydraulic binders comprising a cement and a high water demand supplementary cementitious material and / or a high water demand filler.