Hi Ozlem - I suggest you use a commercial mix of engineering grout. They are self de-airing, self compacting. Sika and others have many varieties. I gave up trying to make my own when the concrete companies spend years developing mixtures and technologies. The UHPC/grout/CSA samples I have used are Bluey HE80 and HE80AG. Sika have a line of grouts that varies from country to country. I have some epoxy alox, epoxy steel and other stuff at a lab at present. Results due next month (june 2023) that will complete my materials investigation. The companies I have spoken to about their grouts have supplied compressive modulus & strength, tensile strength flexural strength. Rarely do they do tensile modulus as construction is not interested in this figure. The best one available to me local is Sika 3350 look it up in #63. Your a chemist?

For machine tool parts my current preference, disregarding cost is:
beryillium ( i found a source in the USA but had to sign too much paperwork to get it)
intermediate carbon fibre E=120GPa density=1500kg/m3. I suppose since cost is neglected I'd go high modulus (fibres are over 600GPa so laminate would be around 250GPa)
std modulus CF E=70GPa density = 1500kg/m3
sika 3350 E=55GPa density = 2300kg/m3
aluminum E=70 density - 2700
steel E=200 density = 7800

when the test results come in this may change. I also like titanium E=110 density = 4400 and beryllium E=287GPa and density = 1850. For reference cast iron is 100-120Gpa and density about 7500kg/m3 depends on its flavour.

Carbon Fiber and Prepreg Data Sheets | Toray Composite Materials America (toraycma.com)

Laminated metals are stiff and damp, so depending on what you want to do take your pick.... I pick cast stuff for production as casting in volume makes sense. For bespoke stuff laminated metal makes sense. About to make a router from laminated aluminium parts...Keep at it, it makes sense eventually. Peter