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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
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: Micro hardness of interface between cement asphalt emulsion mastics and aggregates
Author(s): Zhenjun Wang, Aimin Sha
Appears on pages(s): 453-461
Keywords: Cement asphalt emulsion mastics, Interface between mastics and aggregate, Micro harness, Micro hardness test apparatus, Micro hardness test apparatus
Abstract:Characteristics of interface between cement asphalt emulsion mastics and aggregate is different from that of interface between cement and aggregate or asphalt and aggregate. A novel method was put forward to evaluate interface character of mixtures in the paper. MH-5 micro hardness apparatus was adopted to study influences of fillers’ fineness, aggregate lithology and different type of cement on micro hardness of the interface between the mastics and aggregate; and some micro test apparatuses, such as SEM, XRD and EPMA, were used to analyze its mechanism. Results indicate that the increase of cement and mineral filler fineness is favorable to improve micro hardness of the interface, but over fine mineral filler is disadvantageous. In contrast to granite and granite filler, limestone and limestone filler are more helpful to increase the hardness value. Lithology changes of mineral filler have greater influences on the hardness than those of aggregate. The micro hardness value first increases, then decreases with the increase of mineral filler/asphalt emulsion (MF/AE) ratios. There exists an optimal ratio, which is 1.1. Adopting the high strength cement is an effective way to improve the micro hardness.
International union of laboratories and experts in construction materials, systems and structures, International Partner Access.
View Resource »