摘要:
The present invention relates to fiber cement products. More specifically, the present invention relates to methods for the production of comminuted fiber cement material starting from cured fiber cement products by using a pendular mill. In addition, the present invention relates to the further use of the produced comminuted fiber cement material for the production of fresh fiber cement products comprising the comminuted cured fiber cement material.
摘要:
The present invention relates to a multi-purpose mortar or cement composition for (i) inhibiting the corrosion of steel in mortar or cement structures, (ii) repairing, filling and/or spraying damages, cracks, flaws and cavities in mortar or cement structures and/or (iii) surfacing, coating and/or protecting mortar or concrete surfaces. The present invention further relates to methods of preparation and use of the multi-purpose mortar or cement composition.
摘要:
A cementitious composite product having stone-like properties, the product comprising an extrudable cementitious composition comprises a hydraulic cement, an aggregate, a rheology-modifying agent in an amount of from about 0.1 % to about 4% (by volume of the extrudable cemetitious compoisition), and fibers substantially homogeneously distributed through the extrudable cementitious composition and included in an amount greater than about 2% (by volume of the extrudable cementitious composition), wherein the cementitious composite product has a hardness value of at least 4 MOH and a bulk density of at from about 1.3 g/cm 3 to about 2.3 g/cm 3 .
摘要:
A lost circulation material and method for well treatment employing the material that is effective at sealing or plugging fractured zones and has utility over a wide range of temperatures, including high temperatures. The lost circulation material includes particulate material to quickly de-fluidize the fluid formulation, fibrous material to suspend particles in the slurrified form of the composition and increase the shear strength of the resultant seal, and non-Portland cement material for increasing the compressive strength.
摘要:
Provided is a fiber-reinforced carbonated hydraulic inorganic molded plate having a high bulk specific gravity, a high flexural strength, and a small dimensional change rate per specific gravity. (1) A fiber-reinforced carbonated hydraulic inorganic molded plate including: a cement component, a pulp, and a reinforcing fiber having an aspect ratio in a range of 40 to 1000; and being a carbonation-cured molded plate. (2) A molded plate being a cured product of a composition including at least a cement component, a pulp, and a reinforcing fiber, wherein the molded plate is a fiber-reinforced carbonated hydraulic inorganic molded plate and has a carbonation reaction rate of higher than or equal to 30%.
摘要:
Fibers with crystallization seeds attached to its surface, method of making such composite fibers by surface treatment of fibers followed by either treating such fibers with premade crystallization seeds or by precipitation and direct crystallization of seeds onto pretreated fibers. Controlling and tuning the properties of inorganic binder compositions with fiber- bound crystallization seeds and thereby generating inorganic binder compositions with tailor-made characteristics.
摘要:
There is provided a honeycomb filter (1) wherein particles having an average particle diameter smaller than the average pore diameter of partition walls (4) are deposited at least in open pores formed in the surface layer of the partition wall (4) and in the pores of the partition wall in a surface layer portion (4a) of the partition walls on the exhaust gas inflow side, thereby forming a composite region. The average pore diameter of the partition walls is 5 to 40 µm, and the porosity of the partition wall is 35 to 75%. The particles to be deposited have an average particle diameter of 1 to 15 µm, and the height of the composite region is not more than 80 µm in the direction from the outermost contour line of the partition walls to the surface of the partition walls. The honeycomb filter (1) can be reduced in the pressure loss of the partition wall when an exhaust gas passes through the partition walls at a high flow rate, while obtaining the same effects that would be provided by a layer formed on the partition wall. The honeycomb filter has improved regeneration efficiency, while achieving improved purifying performance. In addition, the honeycomb filter has improved collecting efficiency, while achieving reduced pressure loss after soot deposition. Furthermore, the honeycomb filter is also reduced in the pressure loss after ash deposition.