In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Second Floor, Office # 02.01/07
The Offices 02 Building, One Central
Dubai World Trade Center Complex
Phone: +971.4.516.3208 & 3209
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Early age volume change of cement asphalt mortar in the presence of aluminum powder
Author(s): Fazhou Wang, Zhichao Liu, Shuguang Hu
Appears on pages(s): 493-498
Keywords: Cement asphalt mortar, Volume change, Aluminum powder, Temperature
Abstract:Cement asphalt mortar (CA mortar) is a highly flowable grouting material used in the slab track structure. CA mortar is required to possess a volume expansion rate of 1.0–3.0% after 24 h to guarantee a desired filling effect. This is achieved by the incorporation of aluminum powder (AP). The article investigates the volume change of CA mortar under various AP dosages, temperatures and asphalt emulsion/cement ratio (A/C). Results indicate that when AP is absent, volume shrinkage of 1.8–3.0% is noted at temperatures of 10–30°C; upon the addition of 0.013–0.021% AP, CA mortar undergoes slight volume shrinkage before 4 h, and then keeps expanding until about 24 h after which volume expansion slows down gradually; the expansion rate of CA mortar is greater, the lower the temperature is, and also the higher A/C is.
International union of laboratories and experts in construction materials, systems and structures, International Partner Access.
View Resource »