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This chapter highlights the information on the patents related to concrete admixtures derived mainly from the Chemical Abstracts published in the years 1985 to 1992. A survey of the patent literature on admixtures reveals that annually a substantial number of new formulations are reported.
Substance Information. Substance information. ... The CAS number is the substance numerical identifier assigned by the Chemical Abstracts Service, a division of the American Chemical Society, to substances registered in the CAS registry database. ... as processing aid, for thermoplastic manufacture, as processing aid and of substances in closed ...
Jul 04, 1995· A grinding aid composition suitable for grinding clinker into hydraulic cement powder, an improved grinding process and an improved cement product are disclosed. The grinding aid composition is composed of a mixture of at least one alkylene ether glycol and particulate carbon.
For an optimum addition, the grinding aids affect on the surface area of the normal cement in the order: stearic acid>myristic acid>lauric acid>oleic acid >sunflower oil. Myristic acid and stearic acid can be used as grinding aid. (4) To use over wt.% of the saturated fatty acid addition as grinding agent to the cement decreases the strength.
May 11, 2015· History of Grinding Aids • The history of cement additives goes back to the 1930s. • Attempt was made to disperse carbon black in concrete with the help of triethanolamine to solve mottling issue and to improve the strength of concrete. This chemical is given name "Tucker''s Dispersion Aid".
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The glycerin (GL) is commonly used as a grinding aid component in cement production, however it can bring poor compatibility between cement ground with it (GLC) and polycarboxyla
May 11, 2015· Grinding Aids for cementTerm Paper 1. 1 GRINDING AIDS FOR CEMENT Term Paper SHYAM R. ANANDJIWALA 1st year, Construction Technology and Management Indian Institute of Technology, Delhi India. anandjiwalashyam AbstractRecent growth of construction industry has increased the demand of cement.
Patent US Cement grinding aid and set retarder Google ... May 27, 1980 ... Additives for use as grinding aids and set retarders in the manufacture ... It was only when the appreciable effect of cement fineness on the rate of its ..... the following formulation .
Cement Clinker Grinding Aids . A variety of additives have been shown to have grinding aid characteristics for grinding cement clinker. Typical among these are amines, organosilicones, glycols, resins, cod oil, kojic acid, carbon blacks, wool grease, calcium sulfate, urea, asphaltenes, etc.
A successful assessment of the state of the art of collection, disposal and utilization of waste kiln dust required a review of pertinent technical literature. Chemical Abstracts, the reference files of the Portland Cement Association and a bibliography from the Tennessee Valley Authority were used to gain initial access to the literature.
Protecting pavement materials against the effects of freezing and thawing of water or brine solutions Abstract. Compositions of carboxy methyl cellulose and method for treating cured concrete and bituminous concrete, the surfaces of which are subject to the accumulation of water, melting ice and snow, to reduce spalling or degradation of such surfaces when subjected to the freezing and thawing ...
Nov 26, 2015· 1. A grinding aid composition for cement clinker grinding, comprising: an alkanolamine compound that is a primary alkanolamine compound, a secondary alkanolamine compound, or a mixture thereof; and a glycol. 2. The grinding aid composition of claim 1 wherein the primary alkanolamine compound comprises one C 2C 8 hydroxyalkyl group. 3.
Justia Patents Portland Type Cement Per Se (, Clinker Preparation, Etc.) US Patent for Cement compositions for controlling alkalisilica reactions in concrete and processes for making same Patent (Patent # 5,755,876)
chemical abstract grinding aid for cement patent. cement grinding aid composition patent swiming Patent WOA1 Cement grinding aid composition, low cost cement grinding aid patent,3 Jan 2014, Grinding aids lower the amount of energy and time needed for grinding by increasing the efficiency of the grinding process The reduced energy ...
Dieter Honert Inventions, Patents and Patent Applications ... Dec 06, 2012· Abstract: The invention relates to an aqueous polymer composition which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time .
Grinding aids for high performance cements Grinding aids are organic compounds that are added to the mill during cement grinding. Their main purpose is to reduce the energy required to grind the clinker into a given fineness. In addition, some products (usually referred to as performance enhancers) provide positive effect on cement hydration ...
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Justia Patents Cement Clinker Preparation US Patent for Hydraulic cement with accelerated high strength development Patent (Patent # 6,149,724) Hydraulic cement with accelerated high strength development . Dec 4, 1996 ... added prior to or during the cement grinding, as well as the fact that calcium sulfate is present in the cement ...
Dieter Honert Inventions, Patents and Patent Applications ... Dec 06, 2012· Abstract: The invention relates to an aqueous polymer composition which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time .
A grinding aid composition suitable for grinding clinker into hydraulic cement powder, an improved grinding process and an improved cement product are disclosed. The grinding aid composition is composed of a mixture of at least one alkylene ether glycol and particulate carbon.
Aug 25, 2016· A cement of the same general characteristics of a normal Type I is provided which involves the intergrind of from 1 up to about 25 parts cement chemical grinding aid .
Justia Patents To Aid Dispersion Or Prevent Chemical Reaction, Deliquescence, Agglomeration Or Frothing US Patent for Grinding aids for hydraulic cement Patent (Patent # 4,643,362) ... The grinding aid according to the invention are particularly valuable in the case of cement and especially Portland cement. Portland cement is one of the ...
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