Acceso al sitio web del Consejo de Políticas de Infraestructura

   
Redirigiendo al acceso original de articulo en 19 segundos...
Inicio  /  Applied Sciences  /  Vol: 9 Par: 5 (2019)  /  Artículo
ARTÍCULO
TITULO

Analysis of Early Performance of Cement Paste by Low Field NMR

Dan Jin    
Zejun Lang and Wu Yao    

Resumen

The change of the evaporable water content in the early hydration process of cement paste with different water-to-cement ratios was monitored by low field nuclear magnetic resonance (LF-NMR) relaxometry. The hydration degree and gel/space ratio were accordingly calculated and analyzed. The test results show that the first derivative curves of the transverse magnetization are in good agreement with the known five stages of cement hydration process at an early age. The initial and final setting times of the cement paste are closely related to the times the gel/space ratio reaches a fixed value. The early compressive strength of the hardened cement paste exhibits a power function relationship with the gel/space ratio.

PÁGINAS
pp. 0 - 0
REVISTAS SIMILARES
Water
Algorithms
Information

 Artículos similares

       
 
Jiexin Xu, Shaomin Chen, Yankun Gong, Zhiwu Chen, Shuqun Cai and Daning Li    
Internal solitary waves (ISWs) are large-amplitude internal waves which would destroy underwater engineering. Finding an easy way to discriminate ISWs from field observational data is crucial. Two time--series datasets, one contained ISWs and another onl... ver más

 
Xing-Zhou Li, Zhong-Ren Peng, Qingyan Fu, Qian Wang, Jun Pan and Hongdi He    
Air pollution is a growing concern in metropolitan areas worldwide, and Shanghai, as one of the world?s busiest ports, faces significant challenges in local air pollution control. Assessing the contribution of a specific port to air pollution is essentia... ver más

 
Dong Min Kim, Soon Ho Hong, Se Hyeon Jeong and Sun Je Kim    
The interest in wind-assisted ship propulsions (WASPs) is increasing to improve fuel efficiency and to reduce greenhouse gas emissions in ships. A rotor sail, one of the typical WASPs, can provide auxiliary propulsive force by rotating a cylinder-shaped ... ver más

 
Kailong Feng, Weilin Zhu, Xiaowei Fu, Kai Zhong, Shijie Zhao, Weizhen Chen, Zengyuan Zhou and Lichen Hu    
The Qiantang Sag, as one of the East China Sea Shelf Basin?s sags with thick residual Mesozoic strata, has long lacked comprehensive foundational sedimentary research, significantly impeding the understanding of the region?s resource potential and geolog... ver más

 
Alejandro Carmona-Rodríguez, Carlos Antón, Miguel-Ángel Climent, Pedro Garcés, Vicente Montiel and Alfonso A. Ramos-Esplá    
The ecological succession has been widely studied by means of biofouling assemblages among different substrates, and mainly targeted in early stages on artificial ones. The present study focuses on biofouling that colonizes carbonated structures, a mater... ver más