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Concrete
Published in A. Bahurudeen, P.V.P. Moorthi, Testing of Construction Materials, 2020
[IES 1998] The capacity of a “28 S type” concrete mixer is 0.8 m3. For mixing one cubic meter of concrete, the quantity of cement required is 5.5 bags. In order to avoid fractional usage of cement bags, the volume of concrete (in m3) to be mixed per batch will be 0.790.550.730.44
Strength and Deformation of High Ash Concrete over 10 Years
Published in Christer Sjöström, Durability of Building Materials and Components 7, 2018
The concrete was mixed in a fixed-drum concrete mixer having a capacity of 165 litres. 10 cm cubes and 10 * 10 * 40 cm prisms were cast in metallic moulds. Ordinary concrete mixtures were vibrated on a laboratory platform vibrator while concrete mixtures containing ash were shaken. Then both concretes were cured using a 3 + 10 + 3 hour cycle (heating + holding + cooling cycle) at 95 to 100°C.
Predictive Modelling of RC Skew Slabs: Collapse Load
Published in Structural Engineering International, 2019
Madhu Sharma, Naveen Kwatra, Harvinder Singh
The plain cement concrete used in this study was designed for a specified characteristic compressive strength (fck) of 20 MPa as per the guidelines of IS 10262.15 The concrete mix proportion was found to be 1:2.34:3.94 with a w/c-ratio of 0.60. Several batches of concrete were made in a revolving drum-type concrete mixer. The mixing procedure was carried out in several steps. Initially, the sand and coarse aggregates were mixed together with half of the total water content to achieve a saturated surface-dry condition. Then, the cement and the remaining water were added to the mixture and it was mixed thoroughly to obtain a homogeneous mixture of the concrete.
Mechanical characteristics of PET fibre-reinforced green ultra-high performance composite concrete
Published in European Journal of Environmental and Civil Engineering, 2022
Aktham H. Alani, N. Muhamad Bunnori, Ahmed Tareq Noaman, T. A Majid
A pan-type concrete mixer with a volume capacity of 0.05 m3 was utilised for concrete mixing. Dry binder cementitious materials (OPC, UPOFA, SF, river sand and 50% PET fibre) were initially mixed for 5 minutes. Then, the remaining half of PET fibre was added and mixed for 3 minutes. Water was mixed with a portion of 2/3 SP for 2 minutes. The remaining 1/3 SP was added to the batch ingredients and continuously mixed for another 5 minutes. The batch is mixing proceeds until its compositions were completely mixed and transformed to a wet and thick paste condition.