Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mechanical and physical behavior of cement paste and mortar incorporating nano‐CaO
The aim of this work is to experimentally investigate the effect of properties of nano‐CaO in cement‐based materials. Mortars and paste samples were produced by using nano‐CaO in 2.5, 5, and 7.5% ratios instead of cement. The initial and final setting times and volumetric autogenous shrinkage tests of paste samples and 7, 28, and 360 days’ compressive strength, the ultrasonic pulse velocity, heat of hydration, and linear autogenous shrinkage of mortar samples were determined. In addition, the micro‐structures of paste samples were characterized by X‐ray‐diffraction and SEM. As a result, the shrinkage and setting times were reduced with the increase of nano‐CaO content. CaO with nano size increased the compressive strength (about 10–22%) and the heat of hydration. The compressive strength of mixture containing 7.5% nano‐CaO was lower than that of 2.5 and 5% nano‐CaO at 360 days of curing duration. The heat of hydration increased for all the mixtures containing nano‐CaO at an early stage and very rapidly between 4 and 16 hr.
Mechanical and physical behavior of cement paste and mortar incorporating nano‐CaO
The aim of this work is to experimentally investigate the effect of properties of nano‐CaO in cement‐based materials. Mortars and paste samples were produced by using nano‐CaO in 2.5, 5, and 7.5% ratios instead of cement. The initial and final setting times and volumetric autogenous shrinkage tests of paste samples and 7, 28, and 360 days’ compressive strength, the ultrasonic pulse velocity, heat of hydration, and linear autogenous shrinkage of mortar samples were determined. In addition, the micro‐structures of paste samples were characterized by X‐ray‐diffraction and SEM. As a result, the shrinkage and setting times were reduced with the increase of nano‐CaO content. CaO with nano size increased the compressive strength (about 10–22%) and the heat of hydration. The compressive strength of mixture containing 7.5% nano‐CaO was lower than that of 2.5 and 5% nano‐CaO at 360 days of curing duration. The heat of hydration increased for all the mixtures containing nano‐CaO at an early stage and very rapidly between 4 and 16 hr.
Mechanical and physical behavior of cement paste and mortar incorporating nano‐CaO
Polat, Rıza (Autor:in) / Demirboğa, Ramazan (Autor:in) / Karagöl, Fatma (Autor:in)
Structural Concrete ; 20 ; 361-370
01.02.2019
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
CEMENT COMPOSITION, CEMENT PASTE, CEMENT MORTAR AND CONCRETE MATERIAL
| Europäisches Patentamt | 2019
| DOAJ | 2023
Characteristics of Wood Ash Cement Mortar Incorporating Green-Synthesized Nano-TiO2
| Springer Verlag | 2021
Characteristics of Wood Ash Cement Mortar Incorporating Green-Synthesized Nano-TiO2
| DOAJ | 2021
Chloride ingress in cement paste and mortar
| Tema Archiv | 1999