2019
DOI: 10.1590/0366-6913201965s12588
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Utilization of gypsum from construction and demolition waste in Portland cement mortar

Abstract: Civil construction generates the largest amount of construction and demolition waste (CDW), most of which is not reused and is discarded as inert waste in landfills. The purpose of this study was to evaluate the feasibility of reusing gypsum recovered from CDW in the preparation of mortar. This material was examined to determine its specific mass, morphology, elemental composition and particle size distribution. Test specimens were prepared with a mix design of 1:3 (cement:sand), with the gypsum waste substitu… Show more

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Cited by 9 publications
(3 citation statements)
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“…Del Rio-Merino et al [17] have conducted an extensive review of the use of recycled gypsum in the manufacture of buildings, considering this practice as a corrective measure of environmental impact. In the same line, Antunes et al [18] have proposed the use of recycled gypsum in the manufacture of mortars. Robayo-Salazar et al [19] put forth a mixture of concrete, ceramic, masonry and mortar residues activated by alkalis and mixed with only 10% Portland cement (PC), obtaining mechanical strengths of up to 43.9 MPa at 28 days of curing.…”
Section: Introductionmentioning
confidence: 99%
“…Del Rio-Merino et al [17] have conducted an extensive review of the use of recycled gypsum in the manufacture of buildings, considering this practice as a corrective measure of environmental impact. In the same line, Antunes et al [18] have proposed the use of recycled gypsum in the manufacture of mortars. Robayo-Salazar et al [19] put forth a mixture of concrete, ceramic, masonry and mortar residues activated by alkalis and mixed with only 10% Portland cement (PC), obtaining mechanical strengths of up to 43.9 MPa at 28 days of curing.…”
Section: Introductionmentioning
confidence: 99%
“…), and the demolition technique used [5,16,17]. Nonetheless, the overall waste volume contains between 40 and 85% of the inert fraction [5,18,19], making it suitable to reuse in concrete blocks [16,20,21], cement [22][23][24][25], beach regeneration [2] and road construction project [26][27][28][29][30].…”
Section: Introductionmentioning
confidence: 99%
“…The recycling of some waste materials in the ceramic manufacturing has been widely studied in recent years, in order to economically justify the great costs related to its manufacture as well as to avoid the landfill of these wastes [1][2][3][4][5]. Porous ceramic has many fields of application, ranging from catalyst supports to filters for molten metals, hightemperature thermal insulation, separators in electrochemical reactors, bioreactors and bone tissue engineering, lightweight sandwich structures, microporous membranes for water purification, and wastewater treatment.…”
Section: Introductionmentioning
confidence: 99%