Durability of reactive powder concrete containing mineral admixtures in seawater erosion environment

2021 ◽  
Vol 306 ◽  
pp. 124863
Author(s):  
Dehong Wang ◽  
Yidan Ma ◽  
Mengxin Kang ◽  
Yanzhong Ju ◽  
Cong Zeng
Keyword(s):  
Mineral Admixtures ◽  
Reactive Powder Concrete ◽  
Reactive Powder ◽  
Erosion Environment

Effect of Heat-Curing Procedure on Strength and Microstructure of Reactive Powder Concrete Having High Volume of Mineral Admixtures

2012 ◽  
Vol 204-208 ◽  
pp. 3989-3993
Author(s):  
Yan Zhou Peng ◽  
Wen Yang ◽  
Qiao Sheng Zhu
Keyword(s):  
Steel Slag ◽  
Great Influence ◽  
High Volume ◽  
Pozzolanic Reaction ◽  
Curing Temperature ◽  
Mineral Admixtures ◽  
Reactive Powder Concrete ◽  
Heat Curing ◽  
Reactive Powder ◽  
Curing Procedure

The effect of heat-curing procedure on strength of reactive powder concrete (RPC) having high volume of mineral admixtures, such as ultra-fine fly ash (UFFA), steel slag powder (SS) and silica fume (SF) was studied in this paper. Moreover, the effect of the cuing temperature (20°C, 60°C and 90°C) and the duration (1 day and 3 days) of heat-curing both on microstructure of RPCs’ samples were investigated by SEM-EDXA. The results indicate that the heat-curing procedure has a great influence on strength of this RPC; the compressive strength of specimens cured in a appropriate condition could achieve more than 190 MPa. Moreover, a high curing temperature or a long duration of heat-curing will cause not only a high degree of pozzolanic reaction but also a low n(Ca)/n(Si) ratio of hydration product. Thus, the microstructure of the paste becomes more compact, which would definitely improve the mechanic properties of the hardened paste.

Study on Preparation Technique for Low-Cost Green Reactive Powder Concrete

2006 ◽  
Vol 302-303 ◽  
pp. 405-410 ◽  
Author(s):  
Feng Xing ◽  
Li Dong Huang ◽  
Zheng Liang Cao ◽  
Liang Peng Deng
Keyword(s):  
Compressive Strength ◽  
Steel Fiber ◽  
Low Cost ◽  
Mineral Admixtures ◽  
Reactive Powder Concrete ◽  
Fine Aggregate ◽  
Preparation Technique ◽  
Quartz Powder ◽  
Reactive Powder ◽  
Preparation Techniques

Based on experiments, the effect of various types and content of mineral admixtures and steel fiber on flexural strength and compressive strength of reactive powder concrete (RPC) have been studied. The low-cost green RPC is made with the replacement of quartz sand, quartz powder and partial silica fume by natural fine aggregate and fly ash. The preparation techniques of RPC was also improved.

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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