Zobrazeno 1 - 10
of 1 368
pro vyhledávání: '"ordinary Portland cement"'
Autor:
Yuxu SHEN, Zhaoyun CHAI, Haocheng SUN, Xiangyu LIU, Junqing GUO, Chang XIAO, Tianyu LI, Zipeng XIN, Qinbin SHI
Publikováno v:
Meitan xuebao, Vol 49, Iss 6, Pp 2643-2659 (2024)
To address the problem that traditional cement-based slurry materials cannot meet the actual demand for grouting and reinforcement of large deformation roadways in coal mines, some high-performance composite slurry materials are obtained by modifying
Externí odkaz:
https://doaj.org/article/b005f85722d74538bc58d1468f7b236d
Autor:
Samuel Nunoo, Theresa A. Owusu-Sasu, Prince O. Amponsah, Francis Achampong, Mahamuda Abu, Eric D. Forson, Edward K. Ackom, Remi Touvet, Peter Dickson, Larry P. Chegbeleh
Publikováno v:
Heliyon, Vol 10, Iss 19, Pp e38605- (2024)
Faced with challenges like resource depletion and climate change, the cement industry needs sustainable solutions. This study explores the potential of geologically-delinaeated black shale from Apersua, Ghana, as a supplementary cementitious material
Externí odkaz:
https://doaj.org/article/ee050a2b38524b2a931324d84c2cb607
Autor:
Aishwarya Lakshmi, Poornachandra Pandit, Gopinath Nayak, Yamuna Bhagwat, Prabhakar Gundlapalli
Publikováno v:
Cogent Engineering, Vol 11, Iss 1 (2024)
AbstractSustainable and resilient construction materials are key factors influencing the structural integrity and durability of concrete. Incorporation of polypropylene fibres has become a pivotal strategy to improve shrinkage reduction and crack res
Externí odkaz:
https://doaj.org/article/2965ee446c894ca79f24b30b50d28c86
Autor:
Angelica Cardoza, Henry A. Colorado
Publikováno v:
Open Ceramics, Vol 18, Iss , Pp 100569- (2024)
This study shows an alkaline activated cement (AAC), also known as geopolymer, made from red brick waste with partial addition of Ordinary Portland Cement (OPC). This is a sustainable material since incorporates waste from the brick industry to make
Externí odkaz:
https://doaj.org/article/000656f795ac4d70ac7d0fce5f92d93d
Publikováno v:
Materials, Vol 17, Iss 21, p 5343 (2024)
Polycarboxylate ether (PCE) superplasticisers have been widely used in cement formulations. However, it is not until recently that several studies have analysed the relationship between the properties and the molecular structure. In the present work,
Externí odkaz:
https://doaj.org/article/180d47c1f2d54285a812779de7519f53
Publikováno v:
Heliyon, Vol 10, Iss 9, Pp e29771- (2024)
As health and safety issues emanating from human activities on terrestrial environment is becoming ever challenging, the production of Ordinary Portland Cement is identified as a key contributor. This technology threatens environmental quality by emi
Externí odkaz:
https://doaj.org/article/498853fb5f6e43dd938fb06cc316e606
Publikováno v:
Frontiers in Materials, Vol 11 (2024)
Super-sulfated cement (SSC) is known for its low-carbon footprint, energy efficiency, and eco-friendliness (mainly derived from industrial by-products) with promising applications. However, SSC’s slow early strength development results in inadequat
Externí odkaz:
https://doaj.org/article/0dd686aecc3042fab737d94c12da36ee
Autor:
Juan Yu, Sungwon Sim, Haemin Song, Dohoon Kim, Kyungcheol Jang, Dongho Jeon, Seung Cho, Jae Eun Oh
Publikováno v:
International Journal of Concrete Structures and Materials, Vol 17, Iss 1, Pp 1-11 (2023)
Abstract This study examined the influence of the crystallinity of added nano-alumina on the sulfate resistance of ordinary Portland cement (OPC) paste. Two crystalline types of nano-aluminas (α-and γ-phase) were incorporated in cement pastes, whic
Externí odkaz:
https://doaj.org/article/86ba05f85e45430eba9286187cf99085
Publikováno v:
Materials, Vol 17, Iss 8, p 1761 (2024)
This study presents a comprehensive investigation into the mechanical properties of Basic Magnesium Sulfate Cement Concrete (BMSC) in comparison to Ordinary Portland Cement Concrete (OPC) within reinforced concrete components. The main objective is t
Externí odkaz:
https://doaj.org/article/f808a0f6e72e44748d8cfb66b65963f0
Autor:
Xiangyu Xin, Guangbin Duan, Jiang Zhu, Pengkun Hou, Piqi Zhao, Peng Du, Shoude Wang, Yongbo Huang
Publikováno v:
Buildings, Vol 14, Iss 4, p 890 (2024)
Due to low early strength and high shrinkage, ordinary Portland cement (OPC) has difficulty meeting the actual needs of modern construction projects, while belite calcium sulfoaluminate cement (BCSA–OPC) composite cement provides a new solution. Th
Externí odkaz:
https://doaj.org/article/209d4c120e674e8da41355e93fc6e25a