Effects of a New Type of Shrinkage-Reducing Agent on Concrete
Abstract. Shrinkage-reducing agents have been developed to mitigate shrinkage and to control cracks in concrete. This study aims to evaluate the impact of a newly developed shrinkage-reducing agent (N-SRA) on concrete properties and to compare its properties with a conventional shrinkage-reducing agent (C-SRA).
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Use of Polyethylene Glycol as Self Curing Agent in …
In this research the influence of polyethylene glycol on Compressive strength and Flexural strength of concrete by varying the percentage of polyethylene glycol-400.
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Glycols-Product-
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Glycol Based Grinding Aids – Program Studi Teknik Industri UMA
Sohoni and others investigated the performance of the Portland cement clinker, limestone and quartz in their batch production in a laboratory-type ball mill with seven grinding aids which had been triethanolamine, mono- and diethylene glycols, oleic acid, sodium oleate, sulfite waste liquor and dodecylbenzene sulfonic acid.
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EP1260535B1
Water-soluble polymers (I) of esters of acrylic acid (II) and alkyl-polyalkylene glycols (III) are obtained by a method involving azeotropic esterification of (II) and (III) in presence of organic solvent followed by radical polymerisation of the mixture with removal of solvent by azeotropic distillation and replacement of the lost water. Water-soluble polymers (I) of esters of …
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50323 PDFs | Review articles in POLYETHYLENE GLYCOLS
Polyethylene Glycols and Cement Hydration. Science topic Polyethylene Glycols. Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on ...
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The impact of mono-ethylene glycol on ordinary Portland cement
Glycol-based components are commonly used as grinding agents in ordinary Portland cement (OPC). However, their effects on the grindability and hydration mechanism …
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Polyethylene glycol molecular weight as an important parameter
Changes in molecular weight and dose of all tested glycols had only minor effect on compressive strength, while drying shrinkage was significantly affected by both these factors. ... Bakharev et al. [9] reduced the long-term drying shrinkage of AAS concrete by 30% with lignosulphonate plasticizer and even by 75% with alkyl aryl sulphonate-based ...
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EFFECT OF GRINDING AIDS ON CEMENT PROPERTIES AND …
The present research work aimed to investigate the influence of a chemical grinding aid ethylene glycol (EG) on cement properties and mill performance during the grinding of …
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Pullout performance comparison of novel expandable pedicle
Test samples were prepared according to the ASTM F543 standard testing protocols and surgical guidelines. To examine the screw placement and cement distribution, anteriosuperior and oblique radiographs were taken from each sample after insertion process was completed. Pullout tests were performed in an Instron 3369 testing device.
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Interactions Between Shrinkage Reducing Admixtures (SRA) and Cement
The use of 2% SRA reduced the compressive strength at 7-d and 28-d by 22% and 24%, respectively, compared to REF mixture. Similar results reported a reducing effect of SRA on surface tension of ...
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Propylene Glycol and Dogs: Is It Truly Safe?
Propylene Glycol vs. Ethylene Glycol in Antifreeze Key Differences Between Common Glycols. One of the most common misconceptions among pet owners is confusing propylene glycol with ethylene glycol:. Ethylene Glycol: A highly toxic substance found in traditional antifreeze, even small amounts can be deadly for dogs. Propylene Glycol: A much …
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50323 PDFs | Review articles in POLYETHYLENE GLYCOLS
Polyethylene Glycols and Cement Mortars. Science topic Polyethylene Glycols. Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the ...
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Grinding aids for dry fine grinding processes
The cement hydration kinetics, the microstructure, and the physical–mechanical properties of ground cement samples in the function of PCE-based GA were analyzed. The results indicated that PCE-type GA was more effective in cement grinding process than TEA as well as PCE-type superplasticizer, exhibiting shortened grinding duration, optimized ...
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Glycol Based Grinding Aids – Program Studi Teknik Industri UMA
In this look at, the effect of substituting boron compounds with glycol- primarily based grinding aids to the compressive energy performances of cement turned into investigated.
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Nd:YVO4 laser groove treatment can improve the shear bond
The purpose of this study was to investigate the effect of various surface treatments on the shear bond strength between dental polyetheretherketone (PEEK) and adhesive resin cement. Two hundred and forty specimens were randomly classified into four groups: no treatment, sandblasted, sulfuric-acid-e …
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Recent advances in the bioanalytical methods of polyethylene glycols
Polyethylene glycols are synthetic polymers composed of repeating oxyethylene subunits, which have been known for non-toxic, non-immunogenic, non-antigenic, good solubility in water and therefore approved for pharmaceutical applications. Recently, attachment or amalgamation of polyethylene glycols t …
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Science and Application of Grinding Aids
Dr SB Hegde discusses the importance of grinding aids as essential chemical additives that enhance cement grinding efficiency, reduce energy consumption and improve overall cement quality. Grinding aids are chemical additives used in the manufacturing of cement to improve the grinding efficiency and performance of the material. These additives have …
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EFFECT OF GRINDING AIDS ON CEMENT PROPERTIES …
The present research work aimed to investigate the influence of a chemical grinding aid ethylene glycol (EG) on cement properties and mill performance during the grinding of Portland cement beyond 500 ppm reaching up to 1200 ppm.
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50323 PDFs | Review articles in POLYETHYLENE GLYCOLS
Polyethylene Glycols Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name.
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Shrinkage reducing agent in concrete | TU Delft Repository
Experiments were performed on cement paste samples to investigate influences on the hydration process of cement (surface tension, rate of hydration, porosity, shrinkage, flexural and compressive strength). In addition experiments were performed on concrete samples to investigate the influences of applying shrinkage reducing agents on the ...
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The Effect on the Performance of Cement Grinding Aid …
To sum up, triethanolamine, three isopropanolamine, ethylene glycol and sorbitol have certain effect on cement fineness decreased, the improvement of specific surface area …
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Self-Curing Concrete:- with Poly-Ethylene Glycol
To counter this water demand we have made a study on 'Self- Curing Concrete' which can drastically save the water used on the construction site. This study involves the use of …
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EFFECT OF STRENGTH OF SELF CURING CONCRETE …
In order to improve the durability and performance of concrete, it is important to cure it. This project focuses on self-curring concrete using water-soluble polyethylene glycol as the self …
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The Effect of Various Grinding Aids on the Properties …
The influence of grinding aids (pure triethanolamine and ethylene glycol) on the properties of cements, their compatibility with an acrylate-based superplasticizer and the rheological parameters...
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Glycols
We are a fully integrated supplier of Monoethylene glycol (MEG) and diethylene glycol (DEG), collectively known as ethylene glycol (EG). Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound with the formula (CH2OH)2. It is mainly used for two purposes, as a raw material in the manufacture of polyester fibers and for antifreeze formulations. It is an odorless, …
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Ethylene Amines, Ethanolamines and Glycols
Ethanolamines and Glycols Berolamine 10 (BA-10) Mixture containing a high level of triethanolamine (TEA), diethanolamine (DEA), traces of monoethanolamine (MEA) and water. Mainly used as a grinding agent for cement to reduce energy consumption. Diethanolamine (DEA) Molecule containing one secondary amine and two alcohol groups.
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TW228509B
cement set accelerating admixtures glycols Prior art date Application number TW82100172A Other languages English (en) Inventor Arfaei Ahmad S Berke Neal A Jeknavorian Ara Original Assignee Grace W R & Co Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and ...
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Fiber post cementation strategies: effect of mechanical
The self-adhesive cement appears to be a good alternative for luting fiber posts due to the high push-out bond strengths and lower polymerization stress values. Fiber post cementation strategies: effect of mechanical cycling on push-out bond strength and cement polymerization stress ... Polyethylene Glycols Bisphenol A-Glycidyl Methacrylate ...
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Solvents, Gasses, and Vapors | SpringerLink
This chapter deals with toxicologic hazards of solvents (alcohols, glycols and petroleum), toxic gases and vapors (carbon monoxide, hydrogen sulfide, oxides of nitrogen, cyanide gas, gaseous ammonia, smoke inhalation, phosphine gas etc.), organic compounds, brominated flame retardants, perfluorinated agents, persistent halogenated aromatic products, …
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