Influence of pigment Fe2O3 on properties of fine-grained concrete

http://www.ktk.lt/assets/Uploads/Zurnalas-2020-1-papildytas.pdfGaminant spalvotus betonus naudojami pigmentai. Svarbu žinoti kaip pigmentai ir jų skirtingi kiekiai veikia betono mišinio ir betono savybes. Tyrimu buvo vertinama raudonos spalvos Fe2O3 pigmento įtaka smulkiagrūdžio betono mišinio konsistencijai, sukietėjusio betono lenkimo ir gniuždymo stipriui, vandens įgeriamumui,. Šiuo tikslu bandymams buvo pagaminti šešių sudėčių betono bandiniai, kuriuose pigmento kiekis kito nuo 0 iki 5 % cemento masės. Bandymai buvo atlikti pagal standartines metodikas. Tyrimo rezultatai parodė, kad didžiausiu tankiu, lenkimo, gniuždymo stipriu, mažiausiu vandens įgeriamumu pasižymi smulkiagrūdis betonas, kuriame pigmentas sudaro 2-3 % nuo cemento masėsPigments are used in the production of colored concretes. It is important to know how pigments and their different amounts affect the properties of concrete mix and concrete. The study evaluated the influence of red Fe2O3 pigment on the consistency of fine-grained concrete mix, bending and compressive strength of hardened concrete, water absorption. For this purpose, concrete samples with six compositions were prepared for the tests, in which the pigment content varied from 0 to 5% by weight of the cement. The tests were performed according to standard methodologies. The results of the study showed that fine-grained concrete with the highest density, bending, compressive strength and the lowest water absorption, in which the pigment makes up 2-3% of the cement massKauno technikos kolegijaVytauto Didžiojo universitetasŽemės ūkio akademij