Abstract
To find the energy required during the mixing process of self‐compacting concrete in a ready‐mixed concrete plant and correlate the results with the yield stress of concrete. Power consumption required during the mixing of concrete is measured with a wattmeter connected to the mixing unit’s power supply. A coaxial cylinder viscometer is used to measure the yield stress of concrete. The clamp meter measures the power when the impeller rotates inside the coaxial cylinder viscometer, which is filled with concrete. When the impeller rotates in a coaxial cylinder filled with concrete, the power is measured by a clamp meter. Torque is obtained through the power relationship, which is an essential factor in determining the yield stress. The cost of a rheometer is so high that all construction industries, research institutions, and researchers cannot measure rheological parameters. Nowadays, all rheometers are automated; hence, the cost is very high. Tattersall’s approach of power requirement in mixing the concrete and calculating the yield stress reduces the complexity in determining the rheological parameter.
Highlights
Concrete is a universal material widely used in the construction industry
(vi) From Figure 19, it is observed that power consumption for a M40 grade concrete, i.e., for mixes S31 and S33, consumes more power during mixing of concrete in readymix concrete (RMC) production which is due to the presence of fly ash and absence of GGBS. e S32 mix consumes a minimum power due to the presence of GGBS and the absence of fly ash. e maximum and the minimum power consumptions are due to the absence and the presence of GGBS, respectively
Concrete is highly sensitive since its yield stress measured within fifteen minutes will show different values after concrete starts its initial setting. erefore, there is a random variation in the yield stress and relative yield stress for different rev/sec in this study. e power consumption during mixing of the self-compacting concrete in the RMC plant varies mainly due to different admixtures added into the concrete mix. e mineral admixtures used in the concrete have different physical and chemical properties
Summary
Concrete is a universal material widely used in the construction industry. Due to urban development, the use of concrete has been increasing significantly over the last few years. e performance of concrete is an essential factor for the smooth completion of the project. e cost of making concrete is an important consideration for all concrete manufacturers. The power consumption value increases due to the torque resistance caused by the material in the mixing drum. Torque resistance and power consumption will change, while loading the material in the mixer drum during the mixing process [9]. Erefore, the study on material characteristics will give a clear understanding of power consumption curves, attain homogeneity, and fix the mixing time of different concrete types. Some admixtures make the concrete mix more quickly and cause minimum power consumption compared with concrete consisting of rough-textured mineral admixtures [17] For this reason, the study of characteristics of the new material in the manufacturing industry has been given prime importance. Introducing new admixtures makes the concrete mix for a longer duration so it can eliminate inhomogeneity in the concrete mixture [18,19,20]
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