. 2023 Mar 13;13:4157. doi: 10.1038/s41598-023-30614-y

Table 2.

Effect of hollow glass beads on cement slurry and hardened cement performance.

Bead dosage/%	Density/g·cm⁻³	Rheological parameters		Compressive strength (60 °C/48 h) /MPa	Elasticity modulus /GPa	CTE /10^–6 °C⁻¹	Thermal conductivity/W·(m·K)⁻¹
Bead dosage/%	Density/g·cm⁻³	n	k	Compressive strength (60 °C/48 h) /MPa	Elasticity modulus /GPa	CTE /10^–6 °C⁻¹	Thermal conductivity/W·(m·K)⁻¹
0	1.71	0.9915	0.1444	25.49	9.5	10.7	0.7410
5%	1.53	0.7677	0.6047	24.34	9.1	9.4	0.6704
10%	1.44	0.8062	0.4556	22.36	8.4	8.2	0.6084
15%	1.32	0.9673	0.1422	20.64	7.5	6.7	0.5591
20%	1.29	0.9854	0.1231	18.74	6.8	5.1	0.4790

The percentage of bead is the mass percentage of cement ash.