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Materials Science: Set-Retarders and -Accelerators  (1)

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Cement , cement hydration
List of publications (since 1993), most of them available in full text (PDF).
Publisher: Building and Fire Research Laboratory, National Institute of Standards and Technology
Cat: Materials Science: Cements


European Specification for Sprayed Concrete, 1996
The specification covers: Constituent materials, requirements of concrete composition and durability, mix compositions, execution of spraying, test methods and quality control. It includes a separate appendix on Admixtures and a section on the Execution of Spraying. (Section 8, execution of spraying, got updated and replaced in 1999.) [35 pages, 284 kB, PDF]
Publisher: EFNARC, efnarc.org
Cat: Application Technology: Sprayed Concrete, Shotcrete

On the mechanisms of shrinkage reducing admixtures in self con-solidating mortars and concretes
Compared to conventional concrete, SCC have an increased paste volume, and therefore show a higher shrinkage than conventional concrete. Shrinkage reducing admixtures (SRA) are proved to have the desired effect. Better understanding the working mechanism of SRAs was a main objective of this research. The effects on cement hydration, drying and shrinkage were investigated.
Publisher: Arnd Bernd Eberhardt, 2010, Dissertation. Bauhaus-Universität Weimar, Fakultät Bauingenieurwesen
Cat: Materials Science: Shrinkage-reducing Additives

Adsorption of Polycarboxylate-based Superplasticizer onto Natural Bentonite
Adsorption of polycarboxylate-based superplasticizer on natural bentonite was investigated to better understand the interaction between admixtures and clay as impurities in mortar or concrete.
Publisher: Weishan Wang, Baicun Zheng, Zhongjun Feng, Zuiliang Deng, Lefeng Fu. Journal of Advanced Concrete Technology, Vol. 10 (2012)
Cat: Materials Science: Plasticizers for Concrete and Mortar

Working mechanism of various cellulose ethers as water retention admixtures in oil well cementing and in dry-mix mortar systems
The doctoral dissertation includes three papers: (1) "Role of Colloidal Polymer Associates for the Effectiveness of Hydroxyethyl Cellulose as a Fluid Loss Control Additive in Oil Well Cement". Journal of Applied Polymer Science, Vol. 126, E25–E34 (2012). (2) "Mechanistic Study on Carboxymethyl Hydroxyethyl Cellulose as Fluid Loss Control Additive in Oil Well Cement". Journal of Applied Polymer Science, Vol. 124, 2340–2347 (2012). (3) "Working mechanism of methyl hydroxyethyl cellulose (MHEC) as water retention agent". Cement and Concrete Research 42 (2012) 953–959.
Publisher: Daniel Bülichen, Dissertation, TU München, 2013
Cat: Materials Science: Rheological additives

Workability
Investigation on workability of SCC: Effects of aggregate size, additives and admixtures. [56 pages, 478 kB, PDF]
Publisher: Örjan Petersson, Swedish Cement and Concrete Research Institute, 1999
Cat: Application Technology: Self-compacting Concrete

Influence of Mineral Admixtures on the Rheology of Cement Paste and Concrete
Rheological tests on cement paste were used to successfully select the type and dosage of mineral admixtures that improved concrete workability. Among the six different mineral admixtures tested, the ultra fine fly ash was determined to give the best results by reducing the yield stress and viscosity.
Publisher: Ferraris et al, Nachdruck aus: Cement and Concrete Research, Vol. 31, No.2, 245-255, 2001
Cat: Materials Testing: Rheology

Hydraulic cement set-accelerating admixtures incorporating glycols
Set accelerator, developed on the basis of US5348583, especially for low concrete temperatures.
Publisher: Arfaei et al, W.R. Grace & Co.-Conn. (New York, NY), 1994, US5348583
Cat: Patents: Cement Set Accelerators

Effect of corrosion inhibiting admixtures on concrete properties
Abstract of a paper on the effect of four different corrosion inhibiting admixtures: a calcium nitrite-based inhibitor, an amino and ester-based organic inhibitor, a aminoalcohol-based inhibitor and a migrating corrosion inhibitor.
Publisher: G. De Schutter, L. Luo
Cat: Materials Science: Corrosion, Corrosion Protection, Chemical Resistance

Mitigation Strategies for Autogenous Shrinkage Cracking
The fundamental parameters contributing to the autogenous shrinkage and resultant early-age cracking of concrete are presented. Mitigation strategies which are discussed include: the addition of shrinkage-reducing admixtures more commonly used to control drying shrinkage, control of the cement particle size distribution, modification of the mineralogical composition of the cement, the addition of saturated lightweight fine aggregates, the use of controlled permeability formwork, and the addition of superabsorbent polymers ("water-entrained" concrete) .
Publisher: Bentz, D. P.; Jensen, O. M., in: Cement and Concrete Research, Vol. 26, No. 6, 677-685, August 2004
Cat: Materials Science: Shrinkage-reducing Additives

Assessment of Commercial Corrosion Inhibiting Admixtures for Reinforced Concrete
This report conveys the results of a three-part laboratory study of corrosion inhibiting admixtures in concrete. Abstract in HTML. [172 pages, 1,4 MB, PDF]
Publisher: Michael Carey Brown, Dissertation, 1999
Cat: Materials Science: Corrosion of Cementitious Materials

Shrinkage-Reducing Admixtures and Early Age Desiccation in Cement Pastes and Mortars
Informations about the effects of a shrinkage-reducing additive (SRA) on cement pastes and mortars. Report on fundamental studies of the early-age desiccation of cement-based materials with and without a SRA ('Eclipse SRA' from Grace). Besides an abstract the fulltext is available as PDF (12 pages, 1,9 MB). [Product Informations for 'Eclipse': http://www.na.graceconstruction.com/concrete/download/EC-1_3.pdf]
Publisher: D.P. Bentz et al, Nachdruck aus: Cement and Concrete Research, Vol. 31, No. 7, 1075-1085, July 2001
Cat: Materials Science: Shrinkage-reducing Additives

Viscosity-Enhancing Admixtures for Cement-Based Materials -- An Overview
Cat: Materials Science: Rheological additives

Hydraulic cement set-accelerating admixtures incorporating glycols
Set accelerator especially for low concrete temperatures.
Publisher: Arfaei et al, W.R. Grace & Co.-Conn. (New York, NY), 1994, US5340385
Cat: Patents: Cement Set Accelerators

Hydraulic cement set-accelerating admixtures incorporating amino acid derivatives
A set-accelerating compound for hydraulc cements based on methylol derivatives of amino acids. Especially effective at low temperatures.
Publisher: Arfaei et al, W.R. Grace & Co.-Conn. (New York, NY), 1993, US5211751
Cat: Patents: Cement Set Accelerators

Use of Water Reducers and Superplasticizers
Information about water-reducing admixtures, their retarding effect, and the ASTM C494.
Publisher: Pennsylvania State University - Concrete Clinic - Department of Civil & Environmental Engineering and Instructional Systems
Cat: Materials Science: Plasticizers for Concrete and Mortar


Find results for words including '...admixtures...':
Keywords:
air-entraining admixtures
Raw Materials:
air entraining admixtures
End Products:
air entraining admixtures
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392 Links in 109 Categories. [2018-09-26]
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