Mortar and Epoxy Systems: Repair and Construction Solutions
Mortars with Polymers
Cement mortars with added acrylic polymer or synthetic latex emulsions are known as polymer mortars. These emulsions are typically made from three types of polymers:
- Acrylics
- Styrene-butadiene rubber (SBR)
- Polyvinyl acetate (PVA)
Polymer emulsions are used in two main applications:
Grout Adhesive
Grout adhesive acts as a bonding bridge between fresh mortar and concrete or masonry bases. To prepare the grout, mix cement bond and fine sand in a 1:1 ratio. Then, add acrylic emulsion
Read MoreA Comprehensive Guide to Polymer Modified Mortars and Epoxy Systems in Construction
MORTARS WITH POLYMERS
Cement mortars with an emulsion of an acrylic polymer or synthetic latex added to them are known as polymer-modified mortars. The polymers currently used in the manufacture of these emulsions are of three types:
- Acrylics
- Styrene-butadiene rubber (SBR)
- Polyvinyl acetate (PVA)
These polymers are suitable for permanent wet environments. Polymer emulsions have two forms of application:
GROUT ADHESIVE
Used as a bonding bridge in fresh mortar and concrete or mortar bases for masonry work.
Read MoreLife, Death, and Social Commitment in the Poetry of Miguel Hernandez
Life and Death in the Poetry of Miguel Hernandez
In addition to love, life and death are the three major themes of the work of Miguel Hernández. This is well summarized in a few verses of the Song and Ballad of Absences. Both life and death appear as indivisible and are interpreted from two perspectives:
- Existential Meaning (Philosopher Heidegger): “Man as a being born for death”, an idea found in Spanish literature, for example, Jorge Manrique (“Our lives are the rivers”) and Quevedo (“Living is
The Great Tradition: F.R. Leavis and the Shaping of English Literature
Frank Raymond Leavis: A Critical Influence on English Studies
The Great Tradition and Its Controversial Claims
Frank Raymond Leavis exerted a significant influence on the field of English Studies, sparking intense debate along the way. His most controversial work, The Great Tradition (1948), offers a critical examination of English fiction. The book’s opening declaration, “The great English novelists are Jane Austen, George Eliot, Henry James and Joseph Conrad,” immediately sets the stage for controversy.
Read MoreExploring the Wonders of Light: Reflection, Refraction, and Color Perception
Reflection
When light travels through a medium and encounters a surface that separates it from other mediums, some of it is reflected and continues propagating through the same medium, changing direction and obeying the laws of reflection:
- The incident beam, normal, and reflected ray are in the same plane.
- The angle of incidence and the angle of reflection are equal.
A Kaleidoscope
A kaleidoscope (from the Greek kalós eidos, beautiful image, and scopéo, observe) is a tube containing three mirrors that
Read MoreFundamentals of Physics and Medical Imaging
WEEK 11 – THE ATOM, QUANTA AND IONISING RADIATION
Mass-Energy Equivalence
The physical principle that a measured quantity of energy is equivalent to a measured quantity of mass. The equivalence is expressed by Einstein’s equation E = mc2, where E represents energy, m the equivalent mass, and c the speed of light.
Radioactivity
Radioactivity refers to the particles emitted from nuclei due to nuclear instability. Because the nucleus experiences the intense conflict between the two strongest forces in
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