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: Enhancing Workability Retention of Concrete Containing Natural Zeolite by Superplasticizers’ Combination
Author(s): Hessam AzariJafari, Mohammad Shekarchi, Javad Berenjian, and Babak Ahmadi
Publication: Special Publication
Appears on pages(s): 416-424
Keywords: natural zeolite; superplasticizers’ combination; superplasticizer’s demand; workability loss
Abstract:Use of pozzolanic materials such as natural zeolite as portland cement replacement helps to reduce amount of CO2 emission due to clinker production. Natural zeolite also improves mechanical and durability properties of concrete. It is common to use natural zeolite as a rheological modifying admixture in flowing concrete. However, many cases were reported that zeolite blended cements showed severe workability loss. The object of the analysis is to investigate compatibility of different chemical-based superplasticizers and effect of superplasticizers’ combination on workability retention of concrete made with zeolite blended cement. The results show that combination of lignosulfonate admixture with naphthalene and polycarboxylate based admixture not only reduces the superplasticizer’s demand to achieve certain workability retention, but also helps to reduce slump loss.
Click here to become an online Journal subscriber