# Engineering Properties of Colorful Mortar with Inorganic Color Paste
## 3 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**AM (\%)**} & \multicolumn{4}{c}{**Age (Days)**} & \multicolumn{2}{c}{**Unit:m/s**} \\ \cline{2-9}
**Color** & \
\begin{tabular}{c} **Polyacrylic** \\ **Emulsion** \\ \end{tabular} &
\begin{tabular}{c} **Color** \\ **Paste** \\ \end{tabular} & **3** & **7** & **28** & **56** & **91** & **120** \\ \hline Control & 0 & 0 & 4037 & 4307 & 4414 & 4465 & 4468 & 4479 \\ \hline \multirow{3}{*}{Red} & \multirow{3}{*}{20} & 5 & 3660 & 4004 & 4046 & 4067 & 4147 & 4286 \\  & & 10 & 3635 & 3979 & 4004 & 4024 & 4088 & 4227 \\  & & 15 & 3633 & 3917 & 3949 & 4004 & 4023 & 4167 \\ \hline \multirow{3}{*}{Yellow} & \multirow{3}{*}{20} & 5 & 3799 & 4035 & 4147 & 4172 & 4266 & 4321 \\  & & 10 & 3754 & 3979 & 4010 & 4100 & 4167 & 4313 \\  & & 15 & 3615 & 3901 & 3941 & 3949 & 3979 & 4195 \\ \hline \multirow{3}{*}{Green} & \multirow{3}{*}{20} & 5 & 3660 & 3827 & 3920 & 3949 & 3992 & 4144 \\  & & 10 & 3571 & 3717 & 3827 & 3846 & 3930 & 4056 \\  & & 15 & 3377 & 3484 & 3489 & 3495 & 3573 & 3750 \\ \hline \multirow{3}{*}{Blue} & \multirow{3}{*}{20} & 5 & 3615 & 3812 & 3827 & 3917 & 4000 & 4085 \\  & & 10 & 3574 & 3763 & 3770 & 3850 & 3949 & 4033 \\  & & 15 & 3571 & 3660 & 3700 & 3800 & 3850 & 3901 \\ \hline \multirow{3}{*}{White} & \multirow{3}{*}{20} & 5 & 3531 & 3878 & 4000 & 4035 & 4041 & 4133 \\  & & 10 & 3533 & 3671 & 3919 & 3937 & 3941 & 4111 \\  & & 15 & 3473 & 3533 & 3617 & 3660 & 3752 & 3799 \\ \hline \multirow{3}{*}{Black} & \multirow{3}{*}{20} & 5 & 3660 & 3866 & 3917 & 3917 & 3930 & 4004 \\  & & 10 & 3614 & 3752 & 3827 & 3878 & 3905 & 3917 \\ \cline{1-1}  & & 15 & 3530 & 3689 & 3803 & 3850 & 3867 & 3917 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: UPV of mortar with different proportions of polyacrylic emulsion and inorganic color paste. color paste is 5% at the age of 28 days, the surface resistivities of colors are 30-51 k\(\Omega\)-cm. When the content is 10% at the age of 28 days, the surface resistivities of colors are 28-49 k\(\Omega\)-cm. When the content is 15% at the age of 28 days, the surface resistivities of colors are 25-47 k\(\Omega\)-cm. When the content of inorganic color paste is 5% at the age of 120 days, the surface resistivities of colors are 91-99 k\(\Omega\)-cm. When the content is 10% at the age of 120 days, the surface resistivities of colors are 70-91 k\(\Omega\)-cm. When the content is 15% at the age of 120 days, the surface resistivities of colors are 60-90 k\(\Omega\)-cm. The higher the surface resistivity is, the higher is the resistance to the migration of ions on the specimen surface, and the invasion of adverse ions is more difficult. Therefore, if the surface resistivity is higher than 20 k\(\Omega\)-cm, it means that the specimen has good compactness [23; 24]. The surface resistivity of all variables at the age of 7 days is higher than 20 k\(\Omega\)-cm in this study, meaning the specimens have good surface compactness. (8) Thermal conductivity  
As shown in Figure 10, the thermal conductivities of the control group at the ages of 3 days, 28 days and 120 days are 2.3763, 3.0935 and 3.7238 W/m-K. When the content of inorganic color paste is 5% at the age of 3 days, the thermal conductivity is 1.5806\(\sim\)2.0724 W/m-K, that at the age of 28 days is 2.1275-2.8196 W/m-K, and that at the age of 120 days is 2.8784-3.2633 W/m-K. When the content of inorganic color paste is 10%, the thermal conductivities at the ages of 3 days, 28 days and 120 days are 1.4074-1.8395 W/m-K, 1.8413-2.3207 W/m-K and 2.2758-2.9567 W/m-K. When the content of inorganic color paste is 15% at the age of 3 days, the thermal conductivity is 1.0044\(\sim\)1.5222 W/m-K, that at the age of 28 days is 1.4945-1.8162 W/m-K, and that at the age of 120 days is 2.0258-2.7202 W/m-K. The results show that the thermal conductivity of colorful mortar with various contents at various ages is lower than the control group.