Properties of Strength and Pore Structure of Reactive Powder Concrete Exposed to High Temperatures

2014 ◽  
Vol 111 (3) ◽  
Author(s):  
Hyoung-Seok So ◽  
Je-bang Yi ◽  
Janchivdorj Khulgadai ◽  
Seung-young So
Keyword(s):  
Pore Structure ◽  
High Temperatures ◽  
Reactive Powder Concrete ◽  
Reactive Powder

Investigate on Pore Structure Characteristics of Reactive Powder Concrete after High Temperatures

2012 ◽  
Vol 174-177 ◽  
pp. 1010-1014 ◽  
Author(s):  
Hong Bin Liu ◽  
Yang Ju ◽  
Kai Pei Tian ◽  
Jin Hui Liu ◽  
Li Wang ◽  
...  
Keyword(s):  
Pore Structure ◽  
Pore Size ◽  
Pore Volume ◽  
Average Pore Size ◽  
Reactive Powder Concrete ◽  
Characteristic Parameters ◽  
Average Pore ◽  
Structure Characteristics ◽  
Temperature Levels ◽  
Reactive Powder

The pore structure characteristics of reactive powder concrete (RPC) were investigated by means of the mercury injection method at seven temperature levels, namely, 20°C, 100°C, 150°C, 200°C, 250°C, 300°C, 350°C, respectively. The characteristic parameters such as porosity, pore volume, average pore size and threshold aperture varied with temperatures were analyzed. The results indicate that the porosity, pore volume, threshold aperture and other characteristic parameters of RPC increased with the temperature increasing.

TEMPERATURE EFFECT ON STRUCTURE PARAMETERS AND PROPERTIES OF CEMENT SYSTEMS WITH ORGANO-MINERAL MODIFIERS

2017 ◽  
Vol 7 (1) ◽  
pp. 58-63
Author(s):  
Andrey V. SHEYNFELD ◽  
Semyon S. KAPRIELOV ◽  
Igor A. CHILIN
Keyword(s):  
Heat Treatment ◽  
Phase Composition ◽  
Pore Structure ◽  
Temperature Effect ◽  
High Strength ◽  
Steam Treatment ◽  
Reactive Powder Concrete ◽  
Structure Parameters ◽  
Reactive Powder

The article views changes in strength, phase composition of new growths and diff erential porosity of ultra-high-strength cement systems with organo-mineral modifi er under three temperature modes: under normal conditions at the temperature of 20 °C, after steam treatment at 80 °C and after heat treatment at 200°C. It is shown that the heat treatment at 200 °C signifi cantly modifi es the phase composition and pore structure of cement systems and allows to increase the strength of fi ne grain concrete by 42% and bring it to 188 MPa, what makes possible to refer it to ultra-high-strength concretes, defi ned as «Reactive Powder Concrete».

Fatigue behavior of unbonded prestressed reactive powder concrete beams after creep

2020 ◽  
Vol 62 (9) ◽  
pp. 951-956
Author(s):  
Luo Xuguo ◽  
Tan Zheng Long ◽  
Y. Frank Chen
Keyword(s):  
Concrete Beams ◽  
Fatigue Behavior ◽  
Reactive Powder Concrete ◽  
Reactive Powder

Analysis of Two Cross Arm of Reactive Powder Concrete Pole Design with Structure Materials in Civil Engineering

2012 ◽  
Vol 568 ◽  
pp. 39-42
Author(s):  
Yu Zhuo Jia ◽  
Li Lin
Keyword(s):  
Mechanical Properties ◽  
Stress State ◽  
Structural Analysis ◽  
Transmission Line ◽  
Operating Conditions ◽  
Reactive Powder Concrete ◽  
Analysis Software ◽  
Technical Performance ◽  
Reduced Height ◽  
Reactive Powder

SAP2000 structural analysis software is used to designed two of 500kV partially prestressed reactive powder concrete pole cross arm; moreover, poles of the two cross arm program have been compared. The results show that the triangular truss cross arm has good mechanical properties, improving the main mate’rial of the stress state, the pole reduced height 10m, by the analysis of the structure shows, this cross arm has higher reliability under the operating conditions, which can be used in 500kV transmission line; from economic and technical performance, the pole cost of this program is greatly reduced, while speeding up the construction progress and improving the comprehensive benefits of the poles in the transmission line.

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