Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Yukio Hama"'
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 2021-2032 (2024)
Geopolymers, environmentally friendly materials, face application limitations due to their high drying shrinkage and propensity for cracking. The shrinkage reducing admixture (SRA) has shown promise in mitigating drying shrinkage in cement-based mate
Externí odkaz:
https://doaj.org/article/29c497c7979248a69f3562151734128c
Publikováno v:
Materials, Vol 15, Iss 23, p 8490 (2022)
In this paper, we evaluated the applicability of the minimum required compressive strength for cold weather concreting based on winter meteorological factors. In this study, a compressive strength test, dynamic elastic modulus test, hydration degree
Externí odkaz:
https://doaj.org/article/e5da54da03b64d1fa2d9698b0f7bfc63
Influence of Nanofibrillated Bacterial Cellulose on the Properties of Ordinary and Expansive Mortars
Publikováno v:
Materials, Vol 15, Iss 6, p 2094 (2022)
This study uses two types of nanofibrillated bacterial cellulose (NFBC), a culture solution containing NFBC (Bf) and a purified solution (Pf), to investigate the influence of NFBC on the basic properties of mortar. The flow test, air content test, se
Externí odkaz:
https://doaj.org/article/e4a1b2f3ba6d436cbe32d451438900b6
Publikováno v:
Materials, Vol 14, Iss 22, p 6896 (2021)
In this paper, experiments were conducted on the effects of aesthetic and durability of three representative surface protective material under accelerated weathering test for 5000 h. First, the adaptability of the surface protective material coating
Externí odkaz:
https://doaj.org/article/c7a82c3d1509497292f2327720052438
Publikováno v:
Polymers, Vol 13, Iss 4, p 671 (2021)
Alkali-activated cements prepared from aluminosilicate powders, such as blast furnace slag and fly ash, are rapidly attracting attention as alternatives to cement because they can significantly reduce CO2 emissions compared to conventional cement con
Externí odkaz:
https://doaj.org/article/89c81e5f28eb4540b08dee2b4d2027cc
Publikováno v:
Materials, Vol 13, Iss 21, p 4787 (2020)
The frost damage resistance of blast-furnace slag (BFS) cement is affected by carbonation. Hence, this study investigates the carbonation properties of pastes incorporating BFS with different replacement ratios, such as 15%, 45%, and 65% by weight, a
Externí odkaz:
https://doaj.org/article/8958ddfb943346e296529c37a85eb930
Publikováno v:
Materials, Vol 13, Iss 11, p 2564 (2020)
This paper presents the results of an experimental investigation on the material properties and self-healing ability of a blended cement mortar incorporating blast furnace slag (BFS). The effect of different types and Blaine fineness of BFS on the ma
Externí odkaz:
https://doaj.org/article/b33e4bbfed3b423b94942cd67888f43a
Publikováno v:
Materials, Vol 13, Iss 9, p 2136 (2020)
This paper presents the results of an experimental investigation of the effect of the restrained condition on the mechanical properties, frost resistance, and carbonation resistance of expansive concrete with different water–binder ratios. In this
Externí odkaz:
https://doaj.org/article/dd100741cd034d29b4eb5450b3a76c0a
Publikováno v:
Materials, Vol 13, Iss 11, p 2509 (2020)
This paper presents a prediction method and mathematical model based on experimental results for the change in pore structure of cement-based materials due to environmental conditions. It focuses on frost damage risk to cement-based materials such as
Externí odkaz:
https://doaj.org/article/12925000b9d3406e8eb90b8823696c69
Publikováno v:
Materials, Vol 12, Iss 19, p 3172 (2019)
This study investigated the effect of temperature and time at temperatures lower than 0 °C on mortar mixed with antifreezing admixture to determine the temperature−time function with the aim of expressing the effect universally. As a result, the m
Externí odkaz:
https://doaj.org/article/1081457435664a84a1cf02f4e4795ba5