Rice husk ash as both pozzolanic admixture and internal curing agent in ultra-high performance concrete

2014 ◽  
Vol 53 ◽  
pp. 270-278 ◽  
Author(s):  
Viet-Thien-An Van ◽  
Christiane Rößler ◽  
Danh-Dai Bui ◽  
Horst-Michael Ludwig
Keyword(s):  
Rice Husk ◽  
High Performance ◽  
Rice Husk Ash ◽  
High Performance Concrete ◽  
Internal Curing ◽  
Curing Agent ◽  
Ultra High Performance Concrete

Hydration and microstructure of ultra high performance concrete incorporating rice husk ash

2011 ◽  
Vol 41 (11) ◽  
pp. 1104-1111 ◽  
Author(s):  
Nguyen Van Tuan ◽  
Guang Ye ◽  
Klaas van Breugel ◽  
Oguzhan Copuroglu
Keyword(s):  
Rice Husk ◽  
High Performance ◽  
Rice Husk Ash ◽  
High Performance Concrete ◽  
Ultra High Performance Concrete

Research on Ultra-High Performance Concrete with Rice Husk Ash

2013 ◽  
Vol 330 ◽  
pp. 131-135 ◽  
Author(s):  
Er Bu Tian ◽  
Yi Zhou Zhuang ◽  
Feng Chao Wang
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
High Performance ◽  
Rice Husk Ash ◽  
High Performance Concrete ◽  
Adsorptive Capacity ◽  
Ultra High Performance Concrete ◽  
Hydration Effect ◽  
The One ◽  
Secondary Hydration

Tests were carried out on the properties of Ultra-High Performance Concrete (UHPC) by partially or completely replacing Silica Fume (SF) by Low-temperature Rice Husk Ash (L-RHA) .The results show that the activity and adsorptive capacity of L-RHA is greater than SF; The compressive strength of UHPC is increased by both the filling effect and the secondary hydration effect for L-RHA, but only by the filling effect for SF. However, more than 10% dosage of L-RHA or SF reduces the early compressive strength of UHPC. The compressive strength of UHPC with two blends of L-RHA and SF with less than 10% dosage of each ingredient is higher than the one with only a blend of ingredient, L-RHA or SF.

The study of using rice husk ash to produce ultra high performance concrete

2011 ◽  
Vol 25 (4) ◽  
pp. 2030-2035 ◽  
Author(s):  
Nguyen Van Tuan ◽  
Guang Ye ◽  
Klaas van Breugel ◽  
Alex L.A. Fraaij ◽  
Danh Dai Bui
Keyword(s):  
Rice Husk ◽  
High Performance ◽  
Rice Husk Ash ◽  
High Performance Concrete ◽  
Ultra High Performance Concrete

scholarly journals Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4530 ◽  
Author(s):  
Sahar A. Mostafa ◽  
Ahmed S. Faried ◽  
Ahmed A. Farghali ◽  
Mohamed M. EL-Deeb ◽  
Taher A. Tawfik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rice Husk ◽  
High Performance ◽  
Rice Husk Ash ◽  
High Performance Concrete ◽  
Waste Materials ◽  
Nano Silica ◽  
Ultra High Performance Concrete ◽  
X Ray

This investigation presents the influence of various types of nanoparticles on the performance of ultra high performance concrete (UHPC). Three nanoparticles from waste materials include nano-crushed glass, nano-metakaolin, nano-rice husk ash were prepared using the milling technique. In addition, nano-silica prepared using chemical method at the laboratory is implemented to compare the performance. Several UHPC mixes incorporating different dosages of nanoparticles up to 5% are prepared and tested. Mechanical properties, durability as well as the microstructure of UHPC mixes have been evaluated in order to study the influence of nanoparticles on the hardened characteristics of UHPC. The experimental results showed that early strength is increased by the incorporation of nanomaterials, as compared to the reference UHPC mix. The incorporation of 3% nano-rice husk ash produced the highest compressive strength at 91 day. Microstructural measurements using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDX), and Thermogravimetric Analysis (TGA) confirm the role of nanomaterials in densifying the microstructure, reducing calcium hydroxide content as well as producing more C-S-H, which improves the strength and reduces the absorption of UHPC. Nanoparticles prepared from waste materials by the milling technique are comparable to chemically prepared nanosilica in improving mechanical properties, refining the microstructure and reducing the absorption of UHPC.

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