Selection of Alternative Additives and their Influence on High-Temperature Resistance of Repair Mortars

2015 ◽  
Vol 1122 ◽  
pp. 181-184
Author(s):  
Michaela Fiedlerová ◽  
Tomáš Melichar ◽  
Jiří Bydžovský ◽  
Ámos Dufka
Keyword(s):  
Experimental Study ◽  
Blast Furnace ◽  
High Temperature ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Temperature Resistance ◽  
High Temperature Resistance ◽  
Repair Mortars ◽  
Furnace Slag ◽  
Selection Of

Results of an experimental study focused on evaluating the suitability of selected alternative additives and their influence on high temperature resistance of repair mortars based on cement are presented in the article. As an alternative substitute, fly ash and blast furnace slag were selected and added in different dosage up to 10% of cement weight not as a substitution component. Aggregates of amphibolite origin were chosen in regard to the thermal resistance to high temperature.

Reviews on the Geopolymer Materials for Coating Application

2012 ◽  
Vol 626 ◽  
pp. 958-962 ◽  
Author(s):  
Yahya Zarina ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
H. Kamarudin ◽  
I. Khairul Nizar ◽  
Rafiza Abd Razak
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Coating Application ◽  
Existing Structures ◽  
Granulated Blast Furnace Slag ◽  
Temperature Exposure ◽  
New Applications ◽  
Furnace Slag

The application of geopolymer has been expand in many areas where before this it only used for the production of cement and concrete. One of the new applications of geopolymer is for coating. Metakaolin, fly ash and granulated blast furnace slag has been used as source for the production of geopolymer coating. The result for the geopolymer coating showed that it can prevent corrosion in seawater structure, high bonding strength between existing structures (OPC concrete), lower water permeability and also stable during high temperature exposure.

scholarly journals New Composite Material for Masonry Repair: Mortar Formulations and Experimental Studies

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 912
Author(s):  
Walid Deboucha ◽  
Ibrahim Alachek ◽  
Jean-Patrick Plassiard ◽  
Olivier Plé
Keyword(s):  
Experimental Study ◽  
Composite Material ◽  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Mechanical Performance ◽  
Experimental Studies ◽  
Uniaxial Tensile ◽  
Mineral Additives ◽  
Furnace Slag

The need for retrofitting existing masonry structures is progressively becoming more important due to their continuous deterioration or need to meet the current design requirements of Eurocodes. Textile-Reinforced Mortar (TRM) composite systems have emerged as a sustainable repair methodology suitable for structure retrofitting. Nevertheless, their mechanical performance is still far from being fully investigated. This paper presents an experimental study on the tensile and bond behaviors of a new mortar-based composite consisting of mineral additives, blended cement mortar, and stainless-steel grid. Three different mineral additives (silica fume, fly ash, and blast furnace slag), in binary and ternary systems were used. The experimental study included uniaxial tensile coupon testing on composite specimens and bond tests on composite material applied to clay-brick substrate. The results obtained with the different textile-reinforced cement-based mortars were compared and are discussed here. It was found that, for mortar formulations containing mineral additives—such as fly ash or blast-furnace slag—with high tensile and bond strengths, an adequate adherence between the constituents was obtained. The developed mortar presents mechanical performances equivalent to traditional mortars without additives. The study contributes to the existing knowledge regarding the structural behavior of TRM and promotes the development of a low impact carbon cementitious matrix.

scholarly journals Effect of Mineral Admixtures on the Performance of Low-Quality Recycled Aggregate Concrete

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 596
Author(s):  
Yasuhiro Dosho
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Mineral Admixtures ◽  
Structural Concrete ◽  
Aggregate Concrete ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

To improve the application of low-quality aggregates in structural concrete, this study investigated the effect of multi-purpose mineral admixtures, such as fly ash and ground granulated blast-furnace slag, on the performance of concrete. Accordingly, the primary performance of low-quality recycled aggregate concrete could be improved by varying the replacement ratio of the recycled aggregate and using appropriate mineral admixtures such as fly ash and ground granulated blast-furnace slag. The results show the potential for the use of low-quality aggregate in structural concrete.

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