摘要:
The invention concerns the use of a fluid loss control additive in a pumpable geopolymeric suspension for oil and/or gas industry applications, said suspension further comprising an aluminosilicate source, a carrier fluid, and an activator, and method of providing such a suspension in a borehole. In particular, the suspension according to the invention is used for well primary cementing operations and/or remedial applications.
摘要:
The present invention belongs to the field of binder compositions for construction, more specifically it relates to the use of carboxymethylchitosan as flocculating additive and setting accelerator in binder compositions of the cement, cement mortar, concrete, grout, stucco and similar type. The invention also relates to binder compositions comprising carboxymethylchitosan, as well as to the method for their preparation.
摘要:
In the invention, a hydraulic powder is prepared by a step of grinding a hydraulic compound in the presence of compound (a) that is obtained by adding an alkyleneoxide having 2 to 4 carbon atoms to a compound which has no amino group, but has an active hydrogen, provided that polyethyleneglycol and polypropyleneglycol are excluded. Alternatively, the hydraulic compound can be ground in the presence of compound (a) and anti-foaming agent (b).
摘要:
Novel decorative products including interior home decorative products, garden ornaments, building decorative products and the like are disclosed in which the novel decorative products are characterized in having rigid shells of compacted fiber reinforced magnesium oxychloride composite, seam lines of below two millimeters and cores of which densities can be adjusted according to the preferred weight of the products during the product design stage. The aforesaid compacted fiber reinforced magnesium oxychloride composite is characterized in having compacted structures of F-5 MOC phase magnesium oxychloride. A method for producing the novel decorative products is also provided.
摘要:
Hydraulic compositions comprising a setting accelerator, a water-soluble cellulose ether having a degree of alkyl substitution of 1.6 to 2.5 which is a water-soluble alkyl cellulose or a water-soluble hydroxyalkyl alkyl cellulose, and water are useful as self-leveling compositions having an excellent self-leveling capability, a minimal change with time of fluidity, and a short setting time, or as cement mortar compositions having a long open time and a short setting time.
摘要:
Composite materials including at least partially cured cement-containing particles dispersed through a polymeric matrix and applications utilizing such composite materials such as a floor tile, decking profile, roof profile, stair tread, railings, siding, and interior and exterior trim. Methods of fabricating the composite materials and products are also disclosed.
摘要:
A method is provided for use of a concrete composition and an associated apparatus. The method provides for mixing of the concrete material, accelerant powder and, optionally, an associated substance to enable the controlled hardening of the concrete material in a monolithic structure. The apparatus can dispose a slip-plane film to facilitate a relatively continuous process.
摘要:
A cementitious mixture for concrete including an admixture including dunder having a solids content in a range of from 5% to substantially 100% by weight, the dunder being added to the cement in a range of from 0.1% to 5% by weight of cement in a concentration which results in the initial setting time being less than thirty-six hours.
摘要:
Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate superplasticizer, a corrosion inhibitor, a set retard, a set accelerator, etc.), or a mixture thereof. Exemplary methods for obtaining microbiologically or enzymatically converted sugar acids are also described herein.
摘要:
Surfactant compositions for wellbore operations consisting essentially of a first surfactant selected from the group consisting of alkyl polyglycosides containing alkyl groups containing an odd number of carbon atoms from about 9 to about 13 carbon atoms and a second surfactant selected from the group consisting of alkyl polyglycosides containing alkyl groups containing from about 12 to about 18 carbon atoms and a third surfactant selected from the group consisting of linear ethoxylated alcohols containing from about 8 to 12 carbon atoms and from about 2 to about 8 ethylene oxide groups and a method for formulating such surfactant compositions.