Abstract:
A concrete reinforcing fiber assembly includes a plurality of first fibers and at least one co-fiber attached to at least some of the first fibers. The reinforcing fiber assembly has a water absorption capability of greater than 1.
Abstract:
A variety of methods and compositions are disclosed, including, in one embodiment, a method of treating a well comprising: providing a treatment fluid comprising a base fluid and a blended cementitious component, wherein the blended cementitious component comprises kiln dust from two or more different sources; and introducing the treatment fluid into a well bore.
Abstract:
A cement composition is made from a heat activated chemical salt selected from the group consisting of magnesium oxide, potassium oxide, sodium oxide, and calcium oxide and mixtures thereof. This activated salt is the mixed with hydraulic cement in an amount of 2½ to 3½ parts activated salt to one part hydraulic cement and the resulting mixture of hydraulic cement and activated salt is mixed with water and aggregate. In addition, industrial waste may be added to the mix in minor amounts of 5 to 30 percent.
Abstract:
Method of producing binders for building and building products consisting of a material of man-made and/or natural origin from solid products produced by burning of solid fuels, metallurgical slag, ground fire products, products from burnt out mining deep stock piles, glass production waste, ceramic production waste, brick and concrete construction waste, heat-activated clays, low-crystalline pyroclastic rocks, sedimentary laterite, bauxite, opalolite, allophanolite, diatomite rocks, limestones and claystones and clays. The material is subjected to physical treatment consisting in action of a power pulse, during which mechanical energy Etk is passed on to the particles of the material treated by acting of a force of the size from 50 to 3.105 N, related to 1 g of the treated material during a very short time in the range from 1.10−6 to 1.10−2 s or more. Subsequent pulses cause passing of mechanical energy Etk to grains of the material and/or passing of magnetic energy Etm to its grains together with passing of mechanical energy and/or after it by means of alternate and/or variable magnetic field having frequency from 15.101 to 15.106 Hz and intensity from 10−2 to 103 T. The energy acts on particles of the ferromagnetic substances if they are present in the treated material and/or on charges in defects of grains of the material. The defects were produced as a result of passing of mechanical energy. As a consequence the internal energy of the material treated increases and the particles become more fine at least to 200 micrometers. Re-aggregation of its particles is thus prevented and chemical reactivity of the material treated is increased to obtain dry binder and/or dry building material. Water is added in the quantity from 8.20 to 420% by weight, based on weight of the material treated to obtain formable wet binder and/or formable wet material, which can be formed to the desired form of products and/or hardened by autoclaving and/or dry warming up.
Abstract:
A photocatalyst dispersion liquid contains titanium oxide particles, tungsten oxide particles, a phosphoric acid (salt) and a dispersion medium, and a containing amount of the phosphoric acid (salt) is from 0.001 mol times to 0.2 mol times with respect to the titanium oxide particles. In this photocatalyst dispersion liquid, the aggregation of the particles is suppressed and thus solid-liquid separation is not easily generated. According to this process for producing a photocatalyst dispersion liquid, titanium oxide particles are dispersed in a dispersion medium containing a phosphoric acid (salt) dissolved therein to obtain a titanium oxide particle dispersion liquid, and then tungsten oxide particles are mixed in the titanium oxide particle dispersion liquid.
Abstract:
Magnetic receptive Paints and coatings have been developed to allow one to paint a wall with this coating and apply magnets to this surface. The further development of magnetic receptive compounds lends itself to creating a one step process where one applies a magnetic receptive plaster or compound to a wall with a viscosity sufficient to smooth with a trowel leaving a magnetic receptive surface. In other applications one could spray a compound on a given surface.
Abstract:
Water-redispersible polymer powder compositions with accelerated-setting action based on homo- or copolymers of one or more monomers of vinyl esters of optionally branched C1-15 alkylcarboxylic acids, (meth)acrylic esters of C1-15 alcohols, vinylaromatics, olefins, dienes, and vinyl halides, one or more protective colloids, and optionally antiblocking agent(s), contain one or more setting-accelerants NR3, R2N—(CH2)n—NR2, or one or more singly or doubly NH2-terminated polyalkylene glycols having a C1-C6-alkylene group is/are present, where n=from 1 to 4, and where the radicals R are identical or different, and are hydrogen, a C1-C6-alkyl radical, or a C1-C6-hydroxyalkyl radical, where at least one radical R is a C1-C6-hydroxyalkyl radical, and wherein the setting-accelerants may optionally be present in the form of their salts.
Abstract:
A composite material (10) formed of a ceramic matrix composite (CMC) material (12) protected by a ceramic insulating material (14). The constituent parts of the insulating material are selected to avoid degradation of the CMC material when the two layers are co-processed. The CMC material is processed to a predetermined state of shrinkage before wet insulating material is applied against the CMC material. The two materials are then co-fired together, with the relative amount of shrinkage between the two materials during the firing step being affected by the amount of pre-shrinkage of the CMC material during the bisque firing step. The shrinkage of the two materials during the co-firing step may be matched to minimize shrinkage stresses, or a predetermined amount of prestress between the materials may be achieved. An aluminum hydroxyl chloride binder material (24) may be used in the insulating material in order to avoid degradation of the fabric (28) of the CMC material during the co-firing step.