Dolomitic filler in self-compacting concrete: a review

RILEM Technical Letters

article

Ahmed Abdalqader¹  Mohammed Sonebi¹ 

[1] Queen's University Belfast;Civil EngineeringSchool of Natural and Built Environment, Queen's University Belfast

关键词: Dolomite;    self-compacting concrete;    filler;    alkali-carbonate reaction;   

DOI  :  10.21809/rilemtechlett.2020.118

学科分类：社会科学、人文和艺术（综合）

来源: RILEM Publications SARL

【 摘 要 】

The utilization of fine powders as fillers in self-compacting concrete (SCC) application is widespread, particularly in Europe. The incorporation of these fillers to attain the self-compatibility properties of SCC seems to be cheaper than the use of chemical admixtures. Among the wide range of potential fillers, dolomitic powders, particularly generated as by-products from quarry’s processing, are locally available and can be used to produce SCC. Few studies have shown that dolomitic powders can be incorporated in the SCC’s mix design, resulting in acceptable fresh and hardened properties of SCC. The particle size distribution and fineness of the dolomitic powder as well as the level of addition are the key factors affecting those properties. The influence of the chemical nature of the dolomitic powder on the properties of SCC, particularly the durability (e.g. alkali-carbonate reaction), is yet to be investigated. Furthermore, more efforts are still required to investigate the use of dolomitic by-products in the production of SCC.

【 授权许可】

CC BY