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- Title
ACID AND SULPHATE RESISTANCE OF LIMESTONE BLENDED PERVIOUS CONCRETE.
- Authors
SINGH, REKHA; GOEL, SANJAY
- Abstract
This research study investigates the durability properties of pervious concrete mixture as porosity with interconnected network of pores causes a significant decrease in its strength and resistance against chemical and physical attacks. This study is focused on the degradation of cement base material submitted to sulphate and acid attack. The pH of the solution was controlled at 1 and variation in mass was monitored with respect to time. Durability tests in laboratory were performed to judge the performance of pervious concrete made by blended cement containing limestone powder, silica fume, and metakaolin. The testing program includes abrasion, sulphate, and acid resistance. The test results were compared to the theoretical hypotheses. Durability of pervious concrete exposed to sulphate and acid has been studied on specimen fully submerged in 5% sodium sulphate solution and 1% sulphuric acid solution respectively for 180 days. The study of partial replacement of cement by limestone blends shows that the ternary blends show good improvement against effect of sulphate and acid attack and presents good option of replacement as a substitution in pervious concrete. Due to densification of microstructure of cement paste in ternary blends, abrasion resistance is also improved.
- Subjects
SULFATES; LIMESTONE; SULFURIC acid; SODIUM sulfate; CONCRETE durability; LIGHTWEIGHT concrete
- Publication
i-Manager's Journal on Civil Engineering, 2019, Vol 9, Issue 2, p9
- ISSN
2231-1068
- Publication type
Article
- DOI
10.26634/jce.9.2.15130