Results 71 to 80 of about 17,441 (312)

Effect of polymeric aluminum on hydration hardening characteristics of lithium slag-cement composite cementitious materials

矿业科学学报, 2019
Lithium slag is used as a supplementary cementitious material in cement-based materials due to its pozzolanic activity,but its lower hydration activity leads to a decline in the mechanical properties and durability of the cement-based material.In this ...
Wang Yiren, Wang Dongmin, Zhai Mengyi, Li Xiaolong   +3 more
doaj   +1 more source

Effect of flash-calcined sediment substitution in sulfoaluminate cement mortar

Frontiers in Materials, 2022
Calcium sulfoaluminate cement is a relatively new type of cement with environmental advantages linked to its low carbon emission. However, there is a lack of knowledge on its use with supplementary cementitious materials.
Joelle Kleib, Joelle Kleib, Mouhamadou Amar, Mouhamadou Amar, Mahfoud Benzerzour, Mahfoud Benzerzour, Nor-Edine Abriak, Nor-Edine Abriak   +7 more
doaj   +1 more source

Durability and Smart Condition Assessment of Ultra-High Performance Concrete in Cold Climates [PDF]

, 2016
The goals of this study were to develop ecological ultra-high performance concrete (UHPC) with local materials and supplementary cementitious materials and to evaluate the long-term performance of UHPC in cold climates using effective mechanical test ...
Allena, Srinivas, Qiao, Pizhong, Zhou, Zhidong   +2 more
core  

Microbial Contribution to Soiling and Its Impact on Photovoltaic Module Soiling in Arid Zones of the Atacama Desert

Advanced Sustainable Systems, EarlyView.
Microorganisms colonizing photovoltaic surfaces in the Atacama desert form biofilms that enhance particle adhesion and reduce energy yield. This study identifies UV‐resistant bacteria and carotenoid‐producing strains that interfere with PV performance.
Douglas Olivares, Ricardo Ortíz, Luis Rojas‐Araya, María Teresa Mata, Felipe Galleguillos, Jaime Llanos, Carlos Portillo, Valentina Escobar, Aitor Marzo   +8 more
wiley   +1 more source

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

Advanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon, Kyungchul Noh, Minkyu Hwang, Yoon‐Jung Kim, Unjin Lee, Yeon Joo Ryu, Je‐Kyung Ryu, Sang Beom Jun, Se‐Young Choi, Woo‐Hyun Cho, Sung Joong Lee   +10 more
wiley   +1 more source

Deciphering and Targeting the Schwannoma‐Neuron‐Macrophage Crosstalk for the Treatment of Schwannomatosis and Associated Pain

Advanced Science, EarlyView.
We established patient‐derived SWN cell lines and orthotopic PDX models that recapitulate patient pain phenotypes, alongside a novel intravital DRG imaging platform to track macrophage infiltration and neuronal pain responses. Using these models, we define HMGB1–CCL2–IL‐6 signaling crosstalk driving pain and identify EGF signaling as a key regulator of
Zhenzhen Yin, Limeng Wu, Yanling Zhang, Yao Sun, Grace Y. Lee, Simeng Lu, Xing Gao, John W. Chen, Sonu Subudhi, William Ho, Chao Zhu, Jun Ren, Gino B. Ferraro, Alona Muzikansky, Anat Stemmer‐Rachamimov, Jianren Mao, Scott R. Plotkin, Lei Xu   +17 more
wiley   +1 more source

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

Mechanical properties and microstructure of low carbon high-strength engineered cementitious composites with supplementary cementitious material

Case Studies in Construction Materials
The carbon emissions associated with concrete production remain a significant unresolved issue. One effective approach to mitigate this problem is to partially substitute cement with supplementary cementitious materials.
Shuangquan Qing, Chuanxi Li
doaj   +1 more source

Internal curing of cement pastes by superabsorbent polymers studied by means of neutron radiography [PDF]

, 2017
Autogenous shrinkage is a problem in cementitious materials with a low water-to-binder ratio. When the internal relative humidity decreases due to the ongoing hydration reaction and selfdesiccation, autogenous shrinkage takes place if no external or ...
Alderete, Natalia Mariel, De Belie, Nele, Snoeck, Didier, Van Belleghem, Bjorn, Van den Heede, Philip, Van Tittelboom, Kim   +5 more
core  

Creep and shrinkage of ecological self consolidating concrete [PDF]

, 2015
Optimizing concrete mixtures with regard to replace a part of cement content with supplementary cementitious materials can prompt the design of ecological-self consolidating concrete.
Alghazali, Hayder H., Myers, John J.
core   +1 more source