Effect of Water on Static Mechanical Properties of Cement Emulsified Asphalt Mortar
Effect of water on the static mechanical properties of cement emulsified asphalt mortar (SL mortar) was investigated. Some mortar specimens with different mass ratios of asphalt/cement (i.e., mA/mC = 0.3, 0.5, 0.7, 0.9) were prepared by three kinds of emulsified
asphalt with cation (A1), anion (A3) and compound ion (A2). The mortar specimens were dried in either a low-humidity room or a constant humidity dryer to ensure the moisture content, respectively, after being saturated by water in a vacuum chamber. The compressive stress vs strain curve, the
compressive strength and elastic modulus of these mortar specimens were obtained. The results show that the saturation moisture content of SL mortar specimens can be greater than 10%, depending on mA/mC and the type of emulsified asphalt. The compressive strength and
elastic modulus of the mortar specimens decrease considerably with increasing the moisture content, and the maximum reducing degree of their compressive strength is up to 40%, which is greater than that of elastic modulus. Moreover, it is indicated that the reducing degree of the static mechanical
properties of the mortar specimens is correlated to mA/mC and the type of emulsified asphalt. The greater mA/mC of a mortar specimen, the more its reducing degree will be. Due to the effect of emulsified asphalt on the reducing degree of the static
mechanical properties, the emulsion of asphalt with cation occupies firstly, and then the emulsion with anion comes, and finally the emulsion with both cation and anion takes place. The water resistance of SL mortar can be improved via the increase of the adhesion strength of the organic-inorganic
phase interfaces and the decrease of the moisture saturation.
Keywords: cement emulsified asphalt mortar; moisture content; static mechanical property; water-resistance
Document Type: Research Article
Affiliations: Department of Civil Engineering, Central South of University, Changsha 410075, China
Publication date: 01 November 2012
- Journal of the Chinese Ceramic Society (JCCS), published in Chinese and in English, is a comprehensive monthly periodical focused on the fields of inorganic and non-metallic materials. The main purpose of the JCCS is to report the latest creative achievements in research, production and design for ceramics, glass, cementing materials, refractory, artificial crystals and other non-metallic materials. JCCS is regarded as an important journal in inorganic and non-metallic materials sciences in China and has been awarded by China Association for Science and Technology. The full-text of papers in JCCS is also published by CNKI (China National Knowledge Infrastructure). JCCS is indexed in EI Compendex, CA( Chemical Abstracts) ,SA and Ж and more than 20 databases.
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