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By using crushed brick as aggregate, the structure of concrete can be effectively modeled and materials with very different physical-mechanical characteristics can be obtained. Determination of the influence of polymer admixture on some modified concrete properties is shown in this paper. Experimental work included several types of concrete made with different cement content (250 or 350 kg/m(3)), and same consistency (slump about 5 cm). Few types of concrete made with 4% admixture of polymer (dry material) by weight of cement. Recycled brick or combination of river sand and recycled brick were used as aggregates. Results of determination of concrete compressive and bending strength, modulus of elasticity, coefficient of thermal conductivity, resistance to freezing-thawing, water permeability, shrinkage and creep, and stress - strain diagram were observed.

Na osnovu zavisnosti napona i deformacija pri kratkotrajnom opterećenju može se definisati područje elastičnih i plastičnih deformacija, karakter loma, maksimalna deformacija pri lomu. U ovom članku su prikazani radni dijagrami betona, kao i vrednosti statičkog i dinamičkog modula elastičnosti dobijeni na osnovu ispitivanja prema važećim jugoslovenskim standardima. Eksperimentalni rad je obuhvatio vise vrsta betona spravljenih sa agregatom od reciklirane opeke, sa ili bez dodatka polimera. . On the base of the dependence of stress and strained by loading of short duration, it is possible to define the area of elastic and plastic deformations, the failure character and the maximal failure deformation. In the present article the working concrete diagrams are presented, as well as the values of the static and dynamic modulus of elasticity, obtained on the base of testing according to the valid Yugoslav standards. The experimental work has comprised several kinds of concrete, fabricated with the aggregate of recycled brick, with or without polymer additives. .

Termička svojstva materijala u primeni određuju takozvane projektne termičke vrednosti koeficijenata toplotne provodljivosti građevinskih materijala. Predmet rada su rezultati serije laboratorijskih merenja koeficijenata toplotne provodljivosti lakih betona sa agregatom od reciklirane opeke, sa sadržajem cementa od 250 ili 350 kg/m3, sa ili bez polimera. Rezultati ispitivanja dali su podatke o boljim termičkim svojstvima ovih betona u odnosu na postojeći deklarisani opseg vrednosti (ISO TR 9165), a komentarisani su u odnosu na količinu cementa, količinu polimera, vrstu agregata, zapreminsku masu. . The technical properties of materials in application are defining the so called design thermal values of thermal conductivity coefficients of building materials. The item of this work are the results of laboratory measurements of thermal conductivity coefficients of lightweight concrete with aggregate of recycled brick, with the content of cement of 250 or 350 kg/m3, with or without polymers. The test results have given data with better thermal properties of these concretes in comparison with the existing declared perimeter of values (ISO TR 9165), and they are commented in relation to the cement quantity, polymer quantity, kind of aggregate, volume of the mass. .

U radu je prikazana mogućnost upotrebe reciklirane opeke kao agregata za beton. Eksperimentalni rad je uključio vise vrsta betona spravljenih sa 350 kg/m3 cementa i sa ili bez dodatka polimera. Kao agregat je korišćena kombinacija rečnog peska i reciklirane opeke. Izloženi su rezultati komparativne analize betona na bazi reciklirane opeke na sledeća svojstva betona: čvrstoću pri pritisku, statički i dinamički modul elastičnosti zavisnost napona i deformacija i dilatacije skupljanja. Possibility of using recycled brick as a component (aggregate) of concrete is shown in this paper. Experimental work included few kinds of concrete, made with the same cement content (350 kg/m3) and with or without polymer admixture. Combination of river sand and recycled brick were using as aggregate. The results of comparative analyze of concrete based on recycled brick are shown. Investigations included follow properties: compressive strength, statical and dynamical module of elasticity, stress-strain dependent and shrinkage dilatation.

U radu je prikazana mogućnost upotrebe reciklirane opeke kao agregata za beton. Eksperimentalni rod je uključio vise vrsta betona spravljenih sa dve količine cementa (250 i 350 kg/m) i sa ili bez dodatka polimera. Kao agregat je korišćena kombinacija rečnog peska i reciklirane opeke. Izloženi su rezultati komparativne analize betona na bazi reciklirane opeke na sledeća svojstva betona: čvrstoću pri pritisku, čvrstoću na zatezanje, vodonepropustljivost, otpornost betona prema dejstvu mraza, statički modul elastičnost i toplotnu provodljivost. . Possibility of using recycled brick as a component (aggregate) of concrete is shown in this paper. Experimental work included few kinds of concrete, made with the different cement content (250 and 350 kg/m) and with or without polymer admixture. Recycled brick or combination of river sand and recycled brick were using as aggregate. The results of comparative analyze of concrete based on recycled brick are shown. Investigations included follow properties: compressive and bending strength, waterproof, frost resistance, module of elasticity and thermal conductivity. .