Durability of Structural Lightweight Concrete Containing Different Types of Natural or Artificial Lightweight Aggregates

Corrosion and Materials Degradation

Alexandros Chatzopoulos¹  Konstantinos Aspiotis²  Maria Stratoura³  Efstratios Badogiannis³ 

[1] Department of Civil Engineering, Democritus University of Thrace, 67100 Xanthi, Greece;School of Chemical Engineering, National Technical University of Athens, 15773 Athens, Greece;School of Civil Engineering, National Technical University of Athens, 15773 Athens, Greece;

关键词: lightweight concrete;    pumice;    perlite;    rice husk ash;    strength;    durability;   

DOI  :  10.3390/cmd2040029

来源: DOAJ

【 摘 要 】

Different structural lightweight concrete mixtures of specific density and strength classes were produced by using various lightweight aggregates (LWAs) such as pumice, perlite, and rice husk ash. Their properties were evaluated in fresh and hardened states with regards to compressive strength and durability parameters such as water absorption (open porosity and capillary absorption), chloride’s penetration resistance, and carbonation depth. According to the results, most LWA concrete mixtures performed satisfactorily in terms of the designed strength and density and they could be used as structural LWA concrete mixtures. As far as the durability of LWA concrete was concerned, open porosity and resistance to the carbonation of LWA concrete were burdened with the porous nature of LWAs, while sorptivity in some mixtures and especially chlorides’ penetration resistance in all mixtures were reported to be significantly improved. The overall strength and durability performance of the designed LWA concrete mixtures could mitigate the concerns stemming from its vulnerability to extreme exposure conditions.

【 授权许可】

Unknown