Properties of Precast Concrete Using Food Industry-Filtered Recycled Diatoms

Sustainability

Carlos Parra¹  Francisco Benito¹  Isabel Miñano¹  Carlos Rodriguez²  Pedro Pujante³ 

[1] Department of Architecture and Building Technologies, Technical/Polytechnic University of Cartagena, 30203 Cartagena, Spain;Department of Construction Materials, Centro Tecnológico de la Construcción, 30820 Alcantarilla, Spain;Technical Department, Bortubo S.A., 30620 Murcia, Spain;

关键词: compressive strength;    durability;    diatomite;    recycled diatomites;    concrete;    precast concrete;   

DOI  :  10.3390/su13063137

来源: DOAJ

【 摘 要 】

The concrete industry is under increasing pressure to reduce greenhouse gas emissions. An immediate solution is to minimize the amount of Portland cement used by partially substituting other supplementary cementitious materials. This article presents the results of an experimental campaign on the influence of replacing Portland cement with both calcined and uncalcined diatomites from the filtration of beer and wine in the production of elements made of vibro-pressed pre-cast concrete, such as pipes. Additionally, a natural diatomite is used. The mechanical properties, capillary water absorption, carbonation, and chloride ingress are tested. The results obtained show the possibility of using natural and recycled diatomites on an industrial scale, which can improve even the long term properties of prepared precast concrete.

【 授权许可】

Unknown