By Oleg Figovsky
One means of bettering functionality attributes of establishing buildings is to exploit a brand new classification of materials―polymer composites. they've got distinctive homes that mix excessive energy with positive aspects of non-metallic fabrics. Polymer concretes (PC) seem to supply many probabilities for generating new fabrics with wanted actual and mechanical features, akin to greater mechanical power, low permeability, and bigger chemical resistance. Advanced Polymer Concretes and Compounds provides the result of theoretical and experimental study on effective development fabric composites in keeping with complex polymer binders.
This e-book examines the composition and homes of 2 new polymer concretes that experience power to unravel a variety of development concerns: rubber concrete in keeping with a polybutadiene binder and silicate polymer concrete with an organo-silicate matrix. It examines the actual, mechanical, and technological houses of those computers in addition to their habit in harsh environments and sturdiness and reliability matters. The authors describe a brand new environmentally pleasant polymer for monolithic business ground coverings and coatings―nonisocyanate polyurethanes. in addition they speak about complex crack-resistant coatings according to water dispersion of chlorosulfonated polyethylene, that are used on concrete, steel, and plastic for varied commercial makes use of comparable to plane, autos, paint, and in shipbuilding and civil engineering.
The e-book covers a brand new kind of epoxy composition with nano-heterogenic constitution with power for greater mechanical homes and chemical resistance, acid-resistant construction fabrics in accordance with a nanostructured binder, and a sophisticated environmentally pleasant and weather-resistant fire-protective coating for indoor and outdoors program to flammable substrates. With a spotlight on novel concretes and protecting compounds for quite a few environments, this publication displays the most recent advancements within the speedily growing to be box of establishing fabrics engineering.
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Extra info for Advanced Polymer Concretes and Compounds
Scientific Israel Technological Advantages 4, nos. 3–4 (2002): 20–24. 4ε − 146ε2. 14) Let ν = σ/σR; η = ε/εR; k = EεR /σR. On the experimental base it is believed that dependence ν = f(kη) looks like a square parabola ν = kη − η2, where σ, ε are the current values of compression stress and deformations, respectively, σR, εR are the coordinates of the diagram top, k is the factor describing the elastic–plastic properties of RubCon. 7). Temperature Effect For the experiment, test RubCon samples sized 40 × 40 × 160 mm were prepared.
With permission. ) Modulus of Elasticity, MPa No. 1 2 3 4 Polymer Concrete Control Samples After Exposure in Water After Drying Furfurol–acetone Epoxy Polyester Rubber (RubCon) 19000 22000 21000 25800 6300 13500 6000 23800 8200 18600 8000 25000 Source: Reprinted from Yu. Borisov, Yu. Potapov, O. Figovsky, D. Beilin, “Water Resistance of the Polymer Concretes,” J. Scientific Israel Advanced Technology 14, no. 3 (2012): 84–91. With permission. Deformation properties of the furfurol–acetone polymer samples are reduced to a much greater extent.
This is true also for RubCon, the liquid phase of which consists from rubbers with various microstructures of polymeric chains. Liquid rubbers in projected compositions are capable, if acted on by special sulfuraccelerating systems, to be vulcanized with formation of space-linked net polymers, the space net of which mainly determines the positive properties of the hard base of the RubCon composite. As several studies show, the best combination of physical, chemical, and technical parameters is exhibited by RubCon, based on diene oligomers without functional 25 Polymer Concrete Based on a Vulcanized Polybutadiene Matrix groups hardened in the presence of a sulfur-acceleration system.