Paper Title:
Experimental Research of High Performance Concrete with Multi-Elements Mineral Admixtures
  Abstract

Performing the superposition effect of multi-elements mineral admixtures, high performance concrete (HPC) with 3% of silicon fume, 20% of fly ash and 40% of ground granulated blast-furnace slag (GGBS) was prepared, and its physical and mechanical properties and durability were studied systematically. The compressive strength and tensile strength of HPC are better than those of ordinary concrete. HPC has high compactness with smaller gas diffusion coefficient and relative permeability coefficient. Adding volume stabilizer and controlling the contents of SO3 in the GGBS and volume stabilizer at 3%, can reduce dry shrinkages effectively. Large mount of mineral admixture was used to make the concentrations of K+ and Na+ in the pore solution and the expansion caused by alkali-silica reaction depress greatly. So the alkali-silica reaction gets controlled markedly. The effective diffusion coefficient of chloride ion is 1.96×10-12 m2/s, which means HPC has a favorable chloride ion penetration resistance. After 15 times of wet-dry cycle, the rates of the rust area and quality loss of the reinforcing steel bars in HPC are only 4.1% and 0.05% respectively, so HPC has better performance of steel protection. The mortar bar did not expand in corrosive sodium sulfate solution, and it means HPC has better performance of sulfate resistance. The performances of frost resistance and carbonation resistance of HPC are also favorable. It’s proved in tests that the superposition effect of multi-elements mineral admixtures can enhance the physical and mechanical properties and durability of concrete greatly.

  Info
Periodical
Key Engineering Materials (Volumes 405-406)
Edited by
Hao-Wen YE and Gai-Fei PENG
Pages
24-29
DOI
10.4028/www.scientific.net/KEM.405-406.24
Citation
K. L. Li, X. S. Tang, G. H. Huang, H. Xu, "Experimental Research of High Performance Concrete with Multi-Elements Mineral Admixtures", Key Engineering Materials, Vols. 405-406, pp. 24-29, 2009
Online since
January 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ming Kun Yew, Othman Ismail
Abstract:The mechanical properties of hybrid nylon-steel-fiber-reinforced concrete were investigated in comparison to that of the...
1704
Authors: Xing Guo Wang, Zhao Xia Cheng, Yongchao Hao, Yi Xin Wang
Abstract:Mixing three different fiber composites into concrete specimens respectively, compressive strength, splitting tensile strength and flexural...
1976
Authors: Qing Yu Cao, Wei Sun, Li Ping Guo
Abstract:Cracking is the most common damage in the secondary lining concrete because of its continuous thin-walled structure, potential surrounding...
793
Authors: Jian Hua Wu, Yun Lan Liu
Abstract:This paper studies the influence of different mineral admixtures(fly ash and ground granulated blast furnace slag)on the carbonation...
366
Authors: Yan Kun Zhang, Xiao Hu Li, Pan Zhang
Chapter 1: High Strength High Performance Materials and New Structural System
Abstract:Based on the experiment, the splitting tensile strength and axial tensile strength of specified density steel fiber concrete are studied. The...
330