Effects of ultra fine slag as mineral admixture on the …
The result shows that the inclusion of ultra-fine slag significantly improvises the durability properties of RHA based geopolymer concrete. GPC specimens prepared with ultra-fine slag appear to have improved densification. The analysis of results shows that with a higher percentage of ultra-fine slag in rice husk ash geopolymer concrete …
EFFECTIVENESS OF ULTRA-FINE GROUND SLAG IN CEMENT …
Today it is generally recognized that the use of mineral fillers is one of significant reserves to enhance the efficiency of binders in cost as well as to improve the technical properties of cement composites. Mineral filler corresponding to the
Enhancement in compressive strength of ed concrete …
Abstract. In this study, ultra-fine slag (UFS) was used to prepare ed concrete by replacing Portland cement (PC) to enhance the compressive strength of …
Effective utilization of fly ash and ultra-fine slag in cement …
Ultra fine slag replaces cement with three different percentages viz 5, 10, and 15% to study the compressive strength, porosity and sorptivity. Performance of commercially available ultra fine ...
Effects of ultra-fine ground granulated blast-furnace slag on …
The rapid development of ultra-high-rise buildings, long-span bridges and superhighways is rapidly increasing the demand for GGBS in ultra-high performance concrete (UHPC) [6]. The ultra-fine grinding process contributes directly to the accumulation of an alarmingly large volume of ultra-fine GGBS (UFS) with an 80% …
Ultrafine Cement Grouting | Geo Grout Ground …
Contact the specialists at Geo Grout Ground Modification Specialist Inc. of Western United States for your chemical grouting project needs. Call us at (650) 241-2400 for complete information on our …
The hydration properties of ultra-fine ground granulated …
Based on the fundamental principles of preparing reactive powder concrete (RPC), a new type of RPC was composed by replacing cement with the active powder component ultra-fine ground granulated blast-furnace slag (GGBS). GGBS is proposed as a potential alternative to silica fume (SF), which is currently the most commonly used …
NIPPON STEEL CEMENT CO.,LTD.
blast furnace slag-based microfine cementitious grout materials; HNP-1500. HNP-1500. nanofine cement with D50 1.5 μ that is even finer than ultrafine cement(our SUPER FINE) ＊Prior consultation is required as production and sales of the product for special applications. Our goal We aim to create products that are friendly to people, the ...
Influence of ultra-fine slag and silica fume on properties of …
The effects of ultra-fine slag (UFS) and silica fume (SF) on the compressive strength and durability-related properties of high-strength concrete were compared, and the mechanism of these effects was analysed. Portland cement was replaced with UFS or SF in amounts of 10% and 15% by mass in cement with a water/binder ratio of 0·25.
High early strength-high performance concrete produced …
Overall, it can be concluded that incorporation of Ultra-fine Slag and Ultra-fine Silica at optimal quantities and combination creates durable concrete system by ensuring high early strength with improvement in other key mechanical parameters through effective modifications at microstructure level.
Additivity Effect on Properties of Cemented Ultra …
The 3, 7, and 28-day uniaxial compressive strength of the ultra-fine tailings cemented paste backfill with the newly formulated blast furnace slag-based cementitious material increased by 124%, 142%, …
Comparative study on the performance of ultra-fine fly ash …
Research on hydration mechanism of ultra-fine fly ash and cement composite. Constr. Build. Mater., 227 (10) (2019), Article 116697, 10.1016/j.conbuildmat.2019.116697. View ... Synthesis of zeolite-based porous catalysts from coal gasification fine slag for steam reforming of toluene. Energy, 274 (2023), …
Review of hydration and hardening properties of steel slag …
Using steel slag for the preparation of mine backfill materials is vital to utilizing its resources. Therefore, this study reviewed the impact of different processing technologies and sources on the physical and chemical properties of steel slag, analyzed the application modes and hydration mechanisms of six kinds of steel slag backfill cementitious …
Enhancement in compressive strength of ed concrete by ultra-fine slag
In this study, ultra-fine slag (UFS) was used to prepare ed concrete by replacing Portland cement (PC) to enhance the compressive strength of ed concrete. PC-UFS system was designed and the replacement ratio of UFS to cement was 10%, 20%, 30% and 40%. The compressive strength at the age of 7 d, 14 d and 28 d were measured, …
Performance of rice husk Ash-Based sustainable geopolymer concrete with
Apart from ultra-fine slag (UFS), this investigation considered two waste materials, namely RHA and CCA, for different reasons as discussed below: • Every year, an average of 20 million tons of paddy, 24 million tons of rice husk and approximately 4.4 million tons of RHA are produced in India [22].
Hydration and rheology of activated ultra-fine ground …
Section snippets Experimental. Blast furnace slag (BFS) with an apparent density of 2.98 g/cm 3 and specific surface area of 471 m 2 /kg was commercially obtained from Wuxin new building materials Co., Ltd. Two types of ultra-fine BFS referred to as GS (i.e., ultra-fine BFS by dry-winnowing method) and WS (i.e., ultra-fine BFS by wet …
Physio-chemical characterisation of ultra-fine-slag-based ultra …
Ultra-high-performance concrete (UHPC) meets the demand of modern infrastructure due to its exceptional strength and durability. The effects on concrete strength of the size and shape of fine aggregates, and binder content and type, were investigated. Particle packing concepts were adopted for fine aggregate optimisation, …
Study on the Effect of Ultra-fine Limestone Powder on the …
The effect of different limestone powder fineness on the chloride ion migration coefficient of the cement paste was tested using the Rapid Chloride Migration (RCM) method. The changes in the phase composition and pore structure of the paste were studied using hydration kinetics analysis, XRD and pore structure analysis. The results …
Effect of ultra-fine supplementary cementitious materials on …
1. Introduction. Ultra-high performance concrete (UHPC) is an advanced concrete material designed at France in the 1990s [1].Due to its high compactness and fiber reinforcement, UHPC reveals outstanding mechanical strength, toughness, ductility and durability, commonly defined as the compressive strength greater than 100 MPa, flexural …
Hydration and rheology of activated ultra-fine ground …
Blast furnace slag (BFS) with an apparent density of 2.98 g/cm 3 and specific surface area of 471 m 2 /kg was commercially obtained from Wuxin new building materials Co., Ltd. Two types of ultra-fine BFS referred to as GS (i.e., ultra-fine BFS by dry-winnowing method) and WS (i.e., ultra-fine BFS by wet-grinding method) were produced.
Enhancement of ultra-fine slag on compressive strength of …
Effects of ultra-fine ground granulated blast-furnace slag on initial setting time, fluidity and rheological properties of cement pastes Powder Technol., 345 ( 2019 ), pp. 54 - 63 View PDF View article View in Scopus Google Scholar
Properties of cement grout modified with ultra-fine slag
The purpose of the study is to obtain a cement grout with improved performance. The grout mixes of the present study contain cement, ultra-fine slag …
The role of ultra-fine supplementary cementitious materials …
Slag can enhance the workability of concrete and exhibit a significant pozzolanic effect that improves the long-term strength and durability of concrete [3], [11], [17], [18], but lead to increased self-drying shrinkage, which can adversely affect the crack resistance of concrete. The Ultra-fine supplementary cementitious materials (USCMs) …
A Comprehensive Review of Ultra-Fine Materials as …
Early age strength is possible with ultra-fine materials such as ultra-fine fly ash and ultra-fine slag in cement concrete. Due to smaller particle size they react much …
The effect of ultra-fine admixture on the rheological property …
Ultra-fine LS, SF, FA and slag can decrease the viscosity of cement paste, whereas AG can increase it when the UA quantity is smaller than or equal to 15%. The viscosity and the yield stress of cement paste are decreased obviously with the increase of the UA quantity added, in which the effect of ultra-fine slag is the most significant when …
Studies on ultra high performance concrete incorporating copper slag …
The copper slag is a black glassy particle and granular in nature and has a similar particle size range like sand. The bulk density of granulated copper slag is varying from 1.9 to 2.15 g/cc.The free moisture content present in the copper slag was found to be less than 0.5% and the presence of silica is about 26%, which is desirable since it is one …
Compressive strength, porosity and sorptivity of ultra fine slag …
Ultra fine slag replaces cement with three different percentages viz 5, 10, and 15% to study the compressive strength, porosity and sorptivity. Performance of commercially available ultra fine slag was found to be inferior than ground one and concrete with 10% ultra fine slag was found to be optimum.
Strength and durability of ultra fine slag based high …
the case of concrete with 15% ultra fine slag Portland cement, portlandite, ettringite and feldspar were dominated as seen in control concrete. 3.2 Compressive strength . The variation of compressive strength of concrete with ultra fine slag for different ages of concrete was depicted in Fig. 2.
Effect of ultra-fine fly ash on concrete performance and …
Two types of cement, Portland cement (CEMI) and slag cement (CEMIII), two types of ultra-fly ashes, one with particle size d 90 < 9.3 μm (FA1) and second with d 90 < 4.6 μm (FA2) were used. At paste- and mortar- level, cement was replaced at 0%, 15%, 25%, 35% and 50% with FA1 and FA2. ... Regarding the durability, replacing …
Compressive strength, porosity and sorptivity of ultra fine slag …
Ultra fine slag replaces cement with three different percentages viz 5, 10, and 15% to study the compressive strength, porosity and sorptivity. Performance of commercially available ultra fine ...