Shear fracture performance of the interface between ultra-high toughness cementitious composites and reactive powder concrete

2021 ◽  
pp. 114403
Author(s):  
Shilang Xu ◽  
Kangan Guo ◽  
Qinghua Li ◽  
Xing Yin ◽  
Botao Huang
Keyword(s):  
Shear Fracture ◽  
Reactive Powder Concrete ◽  
Cementitious Composites ◽  
High Toughness ◽  
Fracture Performance ◽  
Reactive Powder

Brief Analysis on Crack of Unbonded Partially Prestressed RPC Beam

2012 ◽  
Vol 238 ◽  
pp. 181-184 ◽  
Author(s):  
Qiang Fu ◽  
Bing Feng Lv ◽  
Xia Cao ◽  
Ling Zhi Jin ◽  
Ning Deng
Keyword(s):  
Experimental Research ◽  
Prestressed Concrete ◽  
Concrete Structure ◽  
Crack Width ◽  
Reduction Factor ◽  
Reactive Powder Concrete ◽  
High Toughness ◽  
High Durability ◽  
Reactive Powder

Reactive Powder Concrete (RPC) has excellent properties such as high toughness and high durability. In this paper, based on the experimental research of the different unbonded prestressed tendons of the unbonded partially prestressed RPC beams, the crack calculation of prestressed RPC beams is analyzed. The results show that the crack regulation is special in some extent of the unbonded partially prestressed RPC beams. It is suggested that the crack width of unbonded partially prestressed RPC beams calculated in accordance with the specification for unbounded partially prestressed concrete structure should multiply the reduction factor of 0.7.

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

scholarly journals Effect of epoxy emulsion on properties of ultra-high toughness cementitious composites

2021 ◽  
Vol 1777 (1) ◽  
pp. 012011
Author(s):  
J W Zhou ◽  
B Y Yu ◽  
Y X Gao ◽  
W Yang ◽  
B J Cheng
Keyword(s):  
Cementitious Composites ◽  
High Toughness ◽  
Epoxy Emulsion

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.

Tests on Mechanical Properties and Anti-Penetration Performance of Steel-Fiber Reactive Powder Concrete

2013 ◽  
Vol 671-674 ◽  
pp. 1761-1765
Author(s):  
Yong Liu ◽  
Chun Ming Song ◽  
Song Lin Yue
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Fracture Toughness ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Steel Fiber ◽  
Reactive Powder Concrete ◽  
Calculation Results ◽  
Reactive Powder ◽  
Penetration Tests

In order to get mechanical properties ,some RPC samples with 5% steel fiber are tested, many groups data were obtained such as compressive strength, shear strength and fracture toughness. And a group of tests on RPC with 5% steel-fiber under penetration were also conducted to validate the performance to impact. The penetration tests are carried out by the semi-AP projectiles with the diameter of 57 mm and earth penetrators with the diameter of 80 mm, and velocities of the two kinds of projectiles are 300～600 m/s and 800～900 m/s, respectively. By contrast between the experimental data and the calculation results of C30 reinforced concrete by using experiential formula under penetration, it shows that the resistance of steel-fiber RPC to penetration is 3 times as that of general C30 reinforced concrete.

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