Abstract
The aim of this paper is to evaluate the influence of a crystallizing chemical admixture on precast micro concretes with two water contents (7% and 11%, by dried mass) and two different conditions of exposure. Thus, precast micro concretes with a composition of 1:3 (cement: fines) with and without crystalline chemical admixture were evaluated on compressive strength (at the age of 28 and 154 days) and water absorption by immersion (at the age of 154 days). Statistical analysis showed that the only significant factor was the effect of the water content on the compressive strength. Besides that, the most significant factors for the water absorption and voids index properties were the water content, followed by the exposure conditions, and the interaction between the water content and the presence of the chemical admixture. The crystalline admixture was insignificant in the conditions of this research.
Reference70 articles.
1. 1. Al-Rashed R, Jabari RM. 2020. Dual-crystallization waterproofing technology for topical treatment of concrete. Case Studies. Constr. Mater. 13:e00408.
2. 2. Yazigi W. 2003. The technique of building. in Portuguese: A técnica de edificar. 5th edition, São Paulo: PINI.
3. 3. Feng Z, Wang F, Xie T, Ou J, Xue M, Li W. 2019. Integral hydrophobic concrete without using silane. Constr. Build. Mater. 227:116678.
4. 4. Li J, Cao J, Ren Q, Ding Y, Zhu H, Xiong C, Chen R. 2021. Effect of nano-silica and silicone oil paraffin emulsion composite waterproofing agent on the water resistance of flue gas desulfurization gypsum. Constr. Build. Mater. 287:123055.
5. Application of crystallizing hydrophobic mineral and curing agent to fresh concrete;MM;Constr Build Mater,2016