Cement macro defect free

Ferber, M.K., Wereszczak, A.A., Hansen, D.H. and Homeay, J. (1993). Evaluation of interfacial mechanical properties in SiC fiber-reinforced macro-defect-free cement composites. Composites Sci. Technol. 49, 23-33. 

J. F. Young Macro-defect-free cement A review, in Proceedings of the Materials Research Society Symposium 179, Specialty Cements with Advanced Properties, Materials Research Society, Pittsburgh (1991), pp.101-121. 

In this study. Macro-defect-free cements were produced by addition of two different epoxy resins, and their strength and durability properties were investigated from mechanical, structural and morphological point of view by using biaxial flexural strength test, contact angle measurements and atomic force microscopy (AFM). 

P.P. Russell Processing Studies of Macro-Defect-Free Cement and Investigation of Chemical... 

O. Ekincioglu Investigations of Water Sensitivity in Macro Defect Free Cements, PhD Thesis,... 

In eighties of twentieth century the two new technologies of very high strength cement pastes were developed the DSP— Densifted Systems containing homogeneously arranged ultra-fine Particles (in Denmark), and the MDF— Macro Defects Free Cements. 

Branca C. et al. (1996) The influence of polyvinylalcohol on macro-defect free cement... 

Lewis, J.A., and Kriven, W.M. (1993) Microstracture-property relationships in macro-defect-free cement. MRS Bulletin 18,72-77. 

Lewis, J.A., Boyer, M., and Bentz, D.P. (1994) Binder distribution in macro-defect-free cements relation between peicolative properties and moisture absorption kinetics. 

Rodrigues, F.A., and Joekes, 1. (1998) Macro-defect free cements a new approach. Cement and Concrete Research 28, 877—885. 

Santos, R.S. et al (1999) Macro-defect free cements influence of poly(vinyl alcohol), cement type and silica fume. Cement and Concrete Research 29,747-751. 

Young, J.F. (1991) Macro-defect-free cement a review. Materials Research Society Symposium Proceedings 179,101-121. 

R. C.T. (2002) Prospects of novel macro-defect-free cements for the new millennium. Ceramic-Silikdty, 46 (2), 58-73. 

Alford, M Men, Birchall J.D. The Properties and Potential Applications of Macro-Defect-Free Cement. Mat. Res. Soc. Symp. Proc. 1985, Vol. 42, pp. 265-276. 

In terms of reinforcement, hydrocalumite/polymer nanocomposites may also be considered as promising in the field of cement-related materials. The so-called macro-defect-free (MDF) cements are based on the filHng by polymer of the macroscopic voids responsible for the breakdown of cement. The hydrocalumite phase is formed during the hydration of cement and is known to readily incorporate polymers between its layers [71-75]. 

The tensile strength of Portland cements is limited by the presence of relatively large pores (0.1-1.0 mm). Modern research has produced cements that are substantially free of large pores (macro-defect-free or MDF cements) and have very promising mechanical properties for example, MDF cements can be formed into cement springs.70 d... 

Effect of Epoxy Resin Addition on the Moisture Sensitivity of Macro Defect Free Polymer-Cement Composites... 

P.G. Desai Cement Polymer Interactions in Macro-Defect-Free Composites, MSc Thesis,... 

The tensile strength of classic cement pastes conforms to the curve plotted on the basis of the Griffith s equation, at the assumption that the width of crack is about 1 mm. The further part of this curve corresponds to the data obtained by Birchall [97], for the specially prepared macro defects free pastes (Fig. 5.40). These pastes are discussed in Chap. 9. They exhibit significantly higher strength because the macropores do not exceed 90 pm. 

Macro defect-free (MDF) hydraulic cements with porosities approaching zero can be made from Portland cement or high-alumina cement. These cements are mixed with water-soluble polymers such as polyvinyl alcohol or polyacrylamide before allowing to set [26,27]. Possible analogous... 

While these attempts to optimize the strength and durability of cement were more or less unsystematic and empirical, the exact details of the chemistry of cement were first elucidated by Le ChateHer (1904). Later developments included the invention of reinforced concrete by Wilkinson and Lambot in 1855, and of blast furnace cement by Emil Langen in 1862. Thereafter, the twentieth century witnessed the invention and optimization of sulfate-resistant alumina cements (1908), the addition of plasticizers such as Hgnosulfonic acid or hydroxylated polysaccharides and superplasticizers such as sulfonated naphthalene-formaldehyde condensate, and the advent of macro-defect-free (MDF) and polymer fiber-reinforced cements, to name only a few. 

Donatello, S., Tyres, M., and Cheeseman, C.R. (2009) Recent developments in macro-defect-free (MDF) cements. Constr. Build. Mater., 23 (5), 1751-1757. 

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