Investigation of low-temperature properties of diatomite-modified asphalt mixtures

Influence of Diatomite and Mineral Powder on Thermal Oxidative Ageing Properties of Asphalt

“…It means that the aged MA has a better ductility than aged DA after TFOT. Cong et al [12] and Yi-qiu et al [15] indicated that the viscosity and stiffness of modified asphalt increased with the increasing of diatomite. And Hesami et al [27] also suggested that the viscosity of asphalt increased exponentially with the increasing of filler fraction.…”

“…According to the researches of Cong et al [12] and Guo et al [17], four contents (0%, 5%, 10%, and 15% by the weight of asphalt) were selected in this study. The asphalt mastics were prepared using high-shear homogenizer (KRH-I, Shanghai Konmix Mechanical & Electrical Equipment Technology Co. Ltd., China) according to [12,15]. Firstly, diatomite and asphalt were separately placed in the oven at 150 ∘ C for 4 h to make sure that the asphalt flowed sufficiently and diatomite reached the blending temperature.…”

“…And diatomite particle formed a lot of anchorage points in asphalt. Tan et al [14,15] evaluated thermodynamics and chemical 2 Advances in Materials Science and Engineering and dynamic mechanical properties of diatomite modified asphalt and mixtures. Their results showed that diatomite modified mixture had better low temperature performance than the control mixture, and the critical bending and compressive strain energy densities of modified mixture were all greater than that of the control mixture.…”

“…Their results indicated that diatomite had a significant effect on the stiffness modulus of asphalt mixture; the compound modified mixture had better travelling performance than the control mixture. Thus, it can be found that diatomite is beneficial for the improvement of mixture properties [11,12,15,17]. Furthermore, Lu and Isacsson [2] and Qin et al [18] also indicated that ageing hardening of asphalt was closely correlated and attributed to the compositional changes within asphalts, which involves the conversion of aromatics into asphaltenes and an increase in total pericondensed aromaticity and carbonyl and sulfoxide functional groups.…”

The effect of zeolite and diatomite on the corrosion of reinforcement steel in 1 M HCl solution

“…Diatomite is an important industrial ore and may develop in pure, sandy, alluvial, clayey, calcareous, marly, and tuff type media. Lately, there has been extensive research on the usage of diatomite as a cement additive [19,20]. The studies conducted have proved that diatomite increases the resistance of blended cements [21,22].…”