effect of slag on pumpability concrete

  • effect of slag on pumpability concrete

    Concrete was tested for compressive strength, sorptivity, resistivity, and water penetration under pressure. The volume of paste in all concrete mixes was the same. Results showed the effect of slag on concrete transport properties. The effect of limestone filler was minimal either admixed solely or in conjunction with slag. get price

  • Effect of slag cement on the properties of ultra-high

    2018-11-30 · Yazici et al. examined the curing effect on reactive powder concrete with high volumes of slag cement and found that 20% slag cement was the optimum replacement level in terms of compressive strength while 60% slag cement slightly reduced the compressive strength. 0.83 × 10 −6 /°C

  • Effect of Steel Slag Powder on the Durability of High

    dvanced mineral admixtures can lead to economical high performance concrete with enhanced durability and reduced cement content. When super fine steel slag powder is mixed into concrete as active admixture, resistance to abrasion and resistance to chloride penetration are improved as well as workability and mechanical properties of the concrete.

  • Influence of Steel Slag on the Workability of Concrete

    The influences of steel slag on the compatibility of cement-superplasicizer system and workability of concrete were investigated in this study. Results show that there are differences among the effects of different steel slags on the fluidity of paste and workability of concrete. Steel slag is not so good as GGBS in improving the workability of concrete.

  • Effects of Ground Granulated Blast Furnace Slag in

    2015-12-28 · difference in the level of deicer scaling that occurred in slag cement concrete versus OPC concrete (Dubovoy, et al, 1986). Afrani and Rogers (1994), on the other hand, recorded much greater scaling loss for concrete with high slag cement replacement compared to 100% OPC concrete. Also noted was a difference in deicer scaling resistance apparently

  • Effects of steel slag powder on workability and

    2014-8-5 · The workability and durability of a type of sustainable concrete made with steel slag powder were investigated. The hydrated products of cement paste with ground granulated blast furnace slag (GGBFS) alone or with a combined admixture of GGBFS-steel slag powder were investigated by X-ray diffraction (XRD). Furthermore, the mechanism of chemically activated steel slag

  • Effect of Cementitious Blast-Furnace Slag on Chloride

    The permeability of concrete containing GGBF slag is less affected by increases in water-cement ratio than concrete containing regular portland cement alone. 3. The detrimental effects of accelerated curing on the permeability of concrete are virtually eliminated with cement blends containing GGBF slag greater than 50%.

  • UNDERSTANDING THE PUMPABILITY OF CONCRETE

    2020-10-13 · effect of mixture design on pumpability are presented in the paper. The concept of Real Paste Content is brought forward as a tool to help engineers clearly understand the mechanisms taking place during the transport of concrete under pressure. CONCRETE PUMPING The pumpability of concrete is not an easy concept to define and requires the

  • Effect of Granulated Blast Furnace Slag (GBS) Sand on

    2018-9-29 · [1] A. Oner and S. Akyuz, “An experimental study on optimum usage of GGBS for the compressive strength of concrete”, Cement and Concrete Composites, 29, (2007), 505-514 [2] Dongsheng Shi, Qiang Liu, Xinxin Xue and Peiyuan He, “Study on the durability of concrete using granulated blast furnace slag as fine aggregate”, Materials

  • The effect of slag addition on strength development

    This paper presents the effect of slag addition on strength development and workability of fly ash/slag based geopolymer (FASLG) concrete cured at normal temperature. Class C fly ash with high ferrite (Fe) content was used as the primary material. The proportions of fly ash (FA) to slag (SL) are: 1 FA : 0 SL, 0.9 FA : 0.1 SL, 0.7 FA : 0.3 SL, and 0.5 FA : 0.5 SL.

  • effect of slag on pumpability concrete

    Concrete was tested for compressive strength, sorptivity, resistivity, and water penetration under pressure. The volume of paste in all concrete mixes was the same. Results showed the effect of slag on concrete transport properties. The effect of limestone filler was minimal either admixed solely or in conjunction with slag. get price

  • 4 Pumpable concrete Concrete pumping and spraying

    2015-7-7 · Fig. 66Effect of slag on heat of hydration temperature (360 kg/m3 slag and cement) Fig. 67Effect of slag on the strength of the concrete (370kg/m3 SRPC) Microsilica consists of minute spheres of silicon dioxide (Si02), which is a by-product of the manufacture of ferrosilicon. The average particle size is 100 times smaller than a cement grain.

  • Optimizing Concrete Pavement Mixes with Slag Cement

    2015-2-8 · • reflects more light, reducing the “urban heat island”effect • Slag cement reduces efflorescence by reduced permeability and increasing the consumption of calcium hydroxide and alkalis Portland vs. Slag cement concrete WCPA Annual Concrete Pavement Workshop Bruce Blair Presentation February 12, 2015 22 of 41

  • Effects of High-Volume Ground Slag Powder on the

    Massive high-strength concrete structures tend to have a high risk of cracking. Ground slag powder (GSP), a sustainable and green industrial waste, is suitable for high-strength concrete. We carried out an experimental study of the effects of GSP with a specific surface area of 659 m2/kg on the hydration, pore structure, compressive strength and chloride ion penetrability

  • slag cement effect on set time of concrete

    slag cement effect on set time of concrete. slag cement effect on set time of concrete. At temperatures less than 85 degrees Fahrenheit concrete containing slag cement can have longer times of set when compared with 100 percent portland cement concrete The lower the ambient andor concrete temperatures the slower the set times will be Figure 1 The percentage of slag

  • Effects of Aggregate Properties on Concrete Size,

    2017-5-2 · Variation in the size of Aggregates changes the water demand, cement content, micro-cracking (strength) in concrete. It also effects pumpability, and durability of concrete. Grading of aggregates depends on the proportions of coarse and fine aggregate. If grading of aggregate is varied, it also changes cement paste content (cost economy), workability of the mix,

  • Application of Molten Slag Fine Aggregate Concrete

    With increasing number of melting-solidification plants for the domestic wastes and incineration ashes, the resulting molten slag is now expected as a recycled aggregate for concrete in Japan, while application examples until now are limited to non-loadbearing pre-cast concrete and concrete secondary products. This study deals with a full-scale application of molten slag

  • slag (GGBF) in slab-on-grade concrete Structural

    2005-7-28 · I designed slag-grinding plant for a client. I got an education on slag from them. It is a great material. The benefits are numerous when slag is used in concrete. They used 50:50 slag:cement mixes not only for the slabs, wall, footing and grade beams. They also used for the slip forming of the 50-foot diameter silos.

  • Predicting Pumpability and Shootability of Crushed

    2016-11-14 · This study aims to estimate the pumpability and shootability of wet-mix shotcrete (WMS) made with crushed aggregates and various admixtures such as silica fume, fly ash, ground granulated blast furnace slag (GGBFS), metakaolin, and steel fiber based on rheological properties. The IBB rheometer was employed as an apparatus to measure the rheological

  • The following information is for your Concrete Pumpers

    2019-5-22 · Slump is a measure of concrete consistency or fluidity. Consistency is the ability of freshly mixed concrete to flow. For given proportions of cement and aggregates (without admixtures), the higher the slump, the wetter the mix. Four- inch (4”) slump is very common with normal weight concrete and is a good average slump for pumping. Above

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