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Questions related from Souradeep Gupta
It is reported that sulfate can be incorporated in the vaterite polymorph of calcium carbonate. I am interested to know how the incorporation influences the physical properties, strength/hardness...
24 February 2024 2,599 2 View
I am wondering if there is any published literature that looks into dimensional stability of biochar pores, and whether such pores shrink when the previously absorbed moisture is released under...
23 December 2020 6,065 5 View
Addition of fine fillers may lead to increase in drying shrinkage at early age. They also influence the rheology - viscosity and yield stress at fresh state. Is there any study investigating the...
24 April 2020 1,378 0 View
I added carbon based filler ( surface area > 230 m2/g) to cement mortar to replace some cement. The temperature of the fresh mixture felt slightly higher than previously cast control mixes with...
29 May 2019 3,687 9 View
Biochar was prepared from cooked food waste ( meat, vegetables and rice) n a sealed furnace at 500 degrees. However, I notice some oily residues on the surface. Is it because the oil from food is...
18 September 2017 7,907 2 View
I did displacement controlled testing (0.05mm/min) of 40x40x160 mm mortar bar and the flexural strength result seems to be between 11-14 MPa, while other studies report only between 7-10 MPa for...
31 May 2017 9,047 2 View
If biochar containing adsorbed/absorbed CO2 is washed with alkali at room temperature ,would it result in generation of more pores in the biochar?
29 November 2016 2,022 17 View
I have prepared biochar from mixed wood saw dust at 300 degrees. XRD pattern show sharp peaks at 2-theta = 37.8 , 44.06, 64.38 and 77.5. Does it say anything about presence of calcium carbonate...
14 November 2016 5,879 8 View
Biochar from saw dust is saturated by passing carbon dioxide over it. Then that char is subjected to high alkaline environment ( calcium/potassium hydroxide). SEM images show many pores in the...
20 August 2016 6,490 3 View
I conducted XRD for two samples, let's say M1 and M2 ,Strength of M1> Strength of M2 In XRD, M1 shows less intense peak of CH and steeper peak for CSH while M2 shows steeper peak of CH. Does...
29 June 2016 6,433 3 View
For example, does addition of PP fibers by 2-4% volume fraction affect early hydration of concrete?
22 December 2015 6,692 1 View