Title:

Analysis of rheological properties of cement composites based on waste materials

Alternative title:

Analiza właściwości reologicznych kompozytów cementowych na bazie materiałów odpadowych

Creator:

Zakrzewski, Mateusz ; Domski, Jacek

Subject:

cement composites ; creep ; steel cord ; fiber-reinforcement concrete ; long-term study ; concrete beams ; waste aggregate ; waste fibers ; crack

Description:

This report presents the results and analysis of long-term properties of fiber-reinforced cement composite based on waste aggregate. The long-term tests were carried out on the stand proposed by the authors for simultaneously testing three beams with dimensions of 100x200x2900 mm. A total of 8 mixtures of cement composites with aggregate from ceramic waste and waste sand were tested. Three beams were made for each mixture. One without dispersed reinforcement and two with 0.5% and 1.0% fiber reinforcement ratios. As dispersed reinforcement, steel cord and hooked steel fibers were used. The beams were subjected to a four-point bending test. The research was carried out for 1000 days. An optical system was used as an innovative solution in long-term research. Based on the measurements, the creep coefficient in the mid-span of the beams was determined, and the crackings of the beams were analysed. The results obtained using manual measuring devices and the optical system were compared. A good convergence of measurement methods was observed. During the analysis of the results, the coefficients modifying the method for calculating the crack width included in Eurocode 2 were determined.

Place of publishing:

Koszalin

Publisher:

Politechnika Koszalińska

Date:

2023

Type:

artykuł w czasopiśmie

Language:

eng

Is part of:

Rocznik Ochrona Środowiska. Vol. 25, s. 159-173

Rights:

Biblioteka Politechniki Koszalińskiej

Access rights:

internet

License:

Creative Commons BY-SA 4.0