... G-5 6,78 39,51 4,36 G-10 6,23 37,93 8,16 G-15 5,91 32,52 21,26 G-20 4,12 24,61 40,41 Coconut coir DC 6,85 41,30 0 G-5 6,21 31,24 24,36 G-10 5,87 25,27 37,77 G-15 ... Physical properties of mixed material (TCVN 629 0-1 997) Figure 6. Sample G-10 and G-20 of rice husk after 28 days. Figure 7. Sample G-10 and G-20 of coconut coir after 28 days. Compressive ... TDS, TSS, Cl - , SO3 2- , CO3 2- . Cement properties determination Cement use is multi-standard cement of Holcim Vietnam company. This cement meets the demand of TCXDVN31 1-2 004 standard....