Title:
Testing of Applicability of Pulp Production Waste to Concrete and Concrete-Like Materials
Author(s):
Honkanen, H., Pennanen, T., Turunen, L.
Document(s):
Paper
Abstract:
Forest industry produces solid waste materials, which are still experienced globally problematic from the continuing use perspective. JAMK coordinated industry cooperated research project focuses on utilization of forest industry waste to increase the environmental friendliness of concrete used in construction. In addition, the common benefit is promoting cooperative initiatives between industry sectors. Project introduces manufacturing of test pieces of concrete mixed in various ways, including cement, water, aggregate and green liquor dregs (GLD) as raw materials. This paper focuses on the project parts containing selected groups of prism tests determining flexural and compression strength, GLD suitability for concrete constituent and test pieces of geopolymers and freeze-thaw durability tests. The usability tests were conducted for the material mixes in JAMK laboratories to examine three Finnish pulp factories’ GLD as part of the concrete raw material mix. Receipes included also compilation of tests of shares of combined GLD and blast furnace slag. Results show, that small amounts of cement can be replaced with GLD without significant changes in strength. One essential indication from the results was the fact, that concrete-like masses are possible to be made totally without cement.
Keywords:
waste, concrete, green liquor dregs, geopolymer
Topic:
Sustainable Resources for Decarbonising the Economy
Subtopic:
Municipal and industrial wastes
Event:
28th European Biomass Conference and Exhibition
Session:
1CO.1.1
Pages:
41 - 45
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-1CO.1.1
Price:
FREE
