High Strength and Low Water Absorption Blast Furnace Slag Coarse Aggregate for Concrete

2017 ◽  
Vol 55 (9) ◽  
pp. 763-766
Author(s):  
H. Tobo
Keyword(s):  
Blast Furnace ◽  
Water Absorption ◽  
Blast Furnace Slag ◽  
Coarse Aggregate ◽  
High Strength ◽  
Furnace Slag

scholarly journals STUDY ON 1DAY PAVE MIXING HIGH STRENGTH PORTLAND CEMENT AND BLAST FURNACE SLAG CEMENT TYPE B

2017 ◽  
Vol 71 (1) ◽  
pp. 308-314
Author(s):  
Shingo YOSHIMOTO ◽  
Tatsuo SHINMI ◽  
Hiroyoshi KATO ◽  
Takatoshi MOTOORI
Keyword(s):  
Blast Furnace ◽  
Portland Cement ◽  
Blast Furnace Slag ◽  
High Strength ◽  
Type B ◽  
Cement Type ◽  
Slag Cement ◽  
Furnace Slag

scholarly journals Effect of Mineral Admixtures on the Sulfate Resistance of High-Strength Piles Mortar

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3500
Author(s):  
Yanyan Hu ◽  
Linlin Ma ◽  
Tingshu He
Keyword(s):  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
High Strength ◽  
Mineral Admixtures ◽  
Quartz Powder ◽  
Sulfate Resistance ◽  
Powder Samples ◽  
Mineral Additives ◽  
Furnace Slag

Pre-stressed high-strength concrete piles (PHCP) are widely used in the building industry in China. The main aim of our research was to investigate the utilization of quartz powder, fly ash, and blast furnace slag as mineral additives to prepare PHCP mortar. The samples were prepared using steam and autoclaving steaming. The influence of minerals on the sulfate resistance of mortar was analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) tests. The results showed that when compared to single doped quartz powder samples, samples prepared using fly ash or blast furnace slag improved the sulfate resistance of the PHCP mortar. Furthermore, the resistance to sulfate attack of samples with dual doped quartz powder, fly ash, and blast furnace slag also improved. MIP tests showed that mineral additives can change the pore size distribution after autoclave curing. However, the number of aching holes increased after mixing with 20% quartz powder and caused a decrease in the sulfate resistance.

scholarly journals Alkali-activated concretes based on fly ash and blast furnace slag: Compressive strength, water absorption and chloride permeability

2020 ◽  
Vol 40 (2) ◽  
Author(s):  
Daniela Eugenia Angulo-Ramírez ◽  
William Gustavo Valencia-Saavedra ◽  
Ruby Mejía de Gutiérrez
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
Fly Ash ◽  
Water Absorption ◽  
Blast Furnace Slag ◽  
Construction Materials ◽  
Chloride Ion ◽  
Chloride Permeability ◽  
Alkaline Activator ◽  
Furnace Slag

Concretes based on alkaliactivated binders have attracted considerable attention as new alternative construction materials, which can substitute Portland Cement (OPC) in several applications. These binders are obtained through the chemical reaction between an alkaline activator and reactive aluminosilicate materials, also named precursors. Commonly used precursors are fly ash (FA), blast furnace slag (GBFS), and metakaolin. The present study evaluated properties such as compressive strength, rate of water absorption (sorptivity), and chloride permeability in two types of alkaliactivated concretes (AAC): FA/GBFS 80/20 and GBFS/OPC 80/20. OPC and GBFS/OPC* concretes without alkaliactivation were used as reference materials. The highest compressive strength was observed in the FA/GBFS concrete, which reported 26,1% greater strength compared to OPC concrete after 28 days of curing. The compressive strength of alkaliactivated FA/GBFS 80/20 and GBFS/OPC 80/20 was 61 MPa and 42 MPa at 360 days of curing, respectively. These AAC showed low permeability to the chloride ion and a reduced water absorption. It is concluded that these materials have suitable properties for various applications in the construction sector.

Application of Cement Stabilized Blast Furnace Slag Material in Road Base Project

2013 ◽  
Vol 275-277 ◽  
pp. 2120-2123
Author(s):  
Tao Jiao ◽  
Li Xia He ◽  
Jian Fu ◽  
Jian Guo
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Cement Content ◽  
Field Tests ◽  
High Strength ◽  
Pilot Project ◽  
Engineering Material ◽  
Road Base ◽  
Furnace Slag ◽  
Hole Structure

With low content in CaO, blast furnace slag is a unique local engineering material with characteristic of multi-hole structure and high strength. According to present technical stardard, mix composition of cement stabilized slag is determined by indoor test in different proportion of cement content. Meanwhile, in pilot project, field tests are conducted to both cement stabilized slag and traditional aggregate and indicate cement stabilized slag has obvious superiority and could be adopted completely in application in road base project.

scholarly journals Properties of Concrete Using Treated Low-Class Recycled Coarse Aggregate and Blast Furnace Slag Sand

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 843
Author(s):  
Yuji Miyazaki ◽  
Takeshi Watanabe ◽  
Yuji Yamada ◽  
Chikanori Hashimoto
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Coarse Aggregate ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Hardened Concrete ◽  
Freezing And Thawing ◽  
Aggregate Concrete ◽  
Recycled Coarse Aggregate ◽  
Furnace Slag

Since high quality natural aggregates are becoming scarce, it is important that industrial recycled products and by-products are used as aggregates for concrete. In Japan, the use of recycled aggregate (RG) is encouraged. Since, strength and durability of recycled aggregate concrete is lower than that of normal aggregate concrete, the use of recycled aggregate has not been significant. In order to improve physical properties of concrete using recycled coarse aggregate, blast furnace slag sand has been proposed. Recently, blast furnace slag sand is expected to improve durability, freezing, and thawing damage of concrete in Japan. Properties of fresh and hardened concrete bleeding, compressive strength, and resistance to freezing and thawing which are caused by the rapid freezing and thawing test using liquid nitrogen is a high loader than the JIS A 1148 A method that were investigated. As a result, concrete using treated low-class recycled coarse aggregate and 50% or 30% replacement of crushed sand with blast furnace slag sand showed the best results, in terms of bleeding, resistance to freezing and thawing.

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