Mechanical Properties of Three High-Strength Concretes Containing Silica Fume

10.14359/9764 ◽  
1995 ◽  
Vol 92 (2) ◽  
Keyword(s):  
Mechanical Properties ◽  
Silica Fume ◽  
High Strength

scholarly journals Strength Characteristics of High Strength Concrete (HSC) with and without Coarse Aggregate

2019 ◽  
Vol 9 (2) ◽  
pp. 4701-4704
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Silica Fume ◽  
High Strength Concrete ◽  
Mechanical Characteristics ◽  
Coarse Aggregate ◽  
High Strength ◽  
Set Up

This paper aimed to investigate the mechanical characteristics of HSC of M60 concrete adding 25% of fly ash to cement and sand and percentage variations of silica fumes 0%,5% and 10% to cement with varying sizes of 10mm,6mm,2mm and powder of granite aggregate with w/c of 0.32. Specimens are tested for compressive strength using 10cm X 10cmX10cm cubes for 7,14,28 days flexural strength was determined by using 10cmX10cmX50cm beam specimens at 28 days and 15cm diameter and 30cm height cylinder specimens at 28 days using super plasticizers of conplast 430 as a water reducing agent. In this paper the experimental set up is made to study the mechanical properties of HSC with and without coarse aggregate with varying sizes as 10mm, 6mm, 2mm and powder. Similarly, the effect of silica fume on HSC by varying its percentages as 0%, 5% and 10% in the mix studied. For all mixes 25% extra fly ash has been added for cement and sand.

Investigation on Performance of Concrete Incorporating Silica Fume and Local UAE Materials

2019 ◽  
Vol 803 ◽  
pp. 222-227 ◽  
Author(s):  
Reem Sabouni ◽  
Hassan Raad Abdulhameed
Keyword(s):  
Mechanical Properties ◽  
Silica Fume ◽  
United Arab Emirates ◽  
High Strength Concrete ◽  
High Strength ◽  
Partial Replacement ◽  
Favorable Effect ◽  
Experimental Program ◽  
Strength Concrete ◽  
Local Materials

In an effort to reduce the amount of cement in the concrete industry and produce greener concrete, emphasis was put on using several industrial by-products such as silica fume, fly ash and slag as partial replacements for cement in concrete. Due to the enormous number of mega reinforced concrete projects constructed in the United Arab Emirates, it is considered to be one of the largest consumers of high strength concrete in the region. On the other hand, only limited research has been done on high strength concrete incorporating local materials in the UAE. The main objective of this research is to conduct an investigation on the performance of high strength concrete containing silica fume as partial replacement of ordinary Portland cement incorporating superplasticizers and local UAE materials by studying its mechanical properties and durability. The experimental program involved two groups: The first group had a water-to-binder material ratio (w/b) of 0.4, whereas, the second group had w/b = 0.3. For both groups the silica fume replacement percentages were 0 (control mix) 5, 7.5, 10, 12.5, and 15 percent. The mechanical properties were tested at 7, 28, and 91 days and the durability tests were performed at 28 days. The results were compared to the control mix and they showed that for all the curing ages studied the use of silica fume as partial replacement of OPC has favorable effect on the compressive strength values and the optimum replacement ratios of silica fume for the tested specimens are found to be at 12.5% and 10% replacement for the w/b ratios of 0.3 and 0.4, respectively. For all the four performed durability tests the replacement of the OPC with silica fume is found to have favorable results and the higher the silica fume percentage replacement of OPC the more favorable the results are. The detailed description of the used mixes and the main conclusions drawn from this research are presented in this paper

scholarly journals LONG -TERM MECHANICAL PROPERTIES OF HIGH STRENGTH SILICA FUME MORTAR USING ACCELERATED AGEING

2010 ◽  
Vol 33 (4) ◽  
pp. 447-458
Author(s):  
H. S. Khalil ◽  
S. A. Ahmad ◽  
E. M. Abdin ◽  
S. E. Zakey
Keyword(s):  
Mechanical Properties ◽  
Silica Fume ◽  
High Strength ◽  
Accelerated Ageing
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