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Silica/Silica Composites Through Electrophoretic Infiltration - Effect of Processing Conditions on Densification of Composites

Studies about the heat of hydration developed in mortars with natural and by-product materials

The heat of hydration developed in reactions of mortars and concretes can be sensibly reduced using pozzolanic materials. However, the decrease of the heat of hydration is not directly proportional to the amount of cement substituted, because of the heat released in the pozzolanic reaction. With materials of high pozz…

Pozzolanic properties of residues of sugar industries (first part)

Non altered straw and sugar cane bagasse ash (CPC, CBC) collected directly from the boilers in the sugar industry and from non-controlled burning in the open fields turned up to be a reasonably good pozzolana, which can be utilized for the manufacture of lime-pozzolana binders. This paper presents a detailed survey of…

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Mechanical and Impact Properties of Untreated Jute Fabric Reinforced Polyester Laminates Compared With Different Ε-Glass Fibre Reinforced Laminates

Article Mechanical and Impact Properties of Untreated Jute Fabric Reinforced Polyester Laminates Compared With Different Ε-Glass Fibre Reinforced Laminates was published on December 1, 2000 in the journal Science and Engineering of Composite Materials (volume 9, issue 4).

Investigation of the Resin Interphase Produced Near Silane- Treated Glass Fiber in Epoxy Resin

A Simulation of Low-Energy Impact Damage Process in CFRP Laminates

Material’s Volumetric-Flow Rate (MVR) as a Unification Parameter in Asphalt Rheology and Quality Control / Quality Assurance Tool for High Temperature Performance Grading

Rheological data of unmodified and polymer-modified asphalts are conventionally obtained from dynamic mechanical characterization and expressed in terms of sets of curves showing the variation of viscoelastic properties with frequency. Using the conventional melt flow indexer, the material’s volumetric-flow rate MVR (…

Recycling of the Granite Quarries and Municipal Incinerator Wastes for the Processing of New Materials as Porcelainized Stoneware

In the 1980s started in the ceramic sector the material conception of porcelainized stoneware, a product with versatile and modern characteristics similar to those of the natural stone, depicting improved properties to the marble and granite. Porcelanized stoneware is a compact ceramic material, very hard and homogene…

Transient Measurements in Rate Controlled Rheometers: A New Method of Standardization

Rheological measurements in response to transient shear rate exhibit coupling effects between mechanical characteristics of rheometer and unsteady (thixotropic and viscoelastic) properties of fluid. This coupling is observed if the characteristic times of the latter lie in the range of those associated to mechanical p…

Through-the-Thickness Compressive Strengths of Graphite/Epoxy Laminated Composites: Experimental Characterization and Statistical Analysis

Polymer Matrix Composites Subjected to Low Velocity Impact: Effect of Fibre Volume Fraction

Fluid Mechanics of Viscoelasticity

Evaluation of the penetration of restoration materials in stone. A new method

We have used the measurements of the water-stone contact angle on the surface of sections of biocalcarenite samples to evaluate the penetration of organic and silico-organic restoration products in this rock. The method has been found to be effective and precise, allowing us to distinguish the depth of the zone with w…

3rd German Ferrofluid Workshop

Multiple Cellulose Synthase Catalytic Subunits Are Required for Cellulose Synthesis in Arabidopsis

Neil G. Taylor, Steven Laurie, Simon R. Turner, Multiple Cellulose Synthase Catalytic Subunits Are Required for Cellulose Synthesis in Arabidopsis, The Plant Cell, Vol. 12, No. 12 (Dec., 2000), pp. 2529-2539

Strong Mechanoluminescence from UV-Irradiated Spinels of ZnGa2O4:Mn and MgGa2O4:Mn

The mechanoluminescence (ML) from spinels of MgAl 2 O 4 :Mn (MAO:Mn), MgGa 2 O 4 :Mn (MGO:Mn) and ZnGa 2 O 4 :Mn (ZGO:Mn) has been investigated. It was found that the MGO:Mn and ZGO:Mn gave a strong ML response and a long-lasting phosphorescence (LLP). On the contrary, MAO:Mn exhibited very weak ML and no LLP. The hig…

Thermoelectric Properties of Bi2.3-xPbxSr2.6Co2Oy Single Crystals

A set of single crystals of the layered cobaltite Bi 2.3- x Pb x Sr 2.6 Co 2 O y (0 ≤ x ≤0.44) were prepared by a flux technique. The resistivity ρ and the thermopower S along the in-plane direction were measured, and the thermoelectric properties were compared with those of other oxides. The Pb substitution causes a…

First-principles study of ferroelectric and antiferrodistortive instabilities in tetragonalSrTiO3

We carry out first-principles density-functional calculations of the antiferrodistortive (AFD) and ferroelectric (FE) soft-mode instabilities in tetragonal ${\mathrm{SrTiO}}_{3},$ with the structural degrees of freedom treated in a classical, zero-temperature framework. In particular, we use frozen-phonon calculations…