Properties of Nonfibered and Fibered Sintered Fly-ash Aggregate Latex Concrete for Sustainable Construction
The scarcity in the availability of natural gravel and crushed stone aggregates has made it increasingly necessary to utilize alternative sustainable materials for use in cement concrete. One such sustainable and promising material is the sintered fly ash aggregate, a type of light weight aggregate (LWA) whose performances in concrete are to be studied as there are certain apprehensions about their durability and strength related properties. The paper presents the results of an investigation undertaken to enhance the performance of these LWA concretes by incorporating SBR latex and steel fibers. Four mixes were produced which includes sintered fly ash aggregate concretes with and without SBR latex and with and without steel fibers. The various strength tests studied includes compressive, tensile, flexure, impact, energy absorption characteristics and crack induction stresses and the durability tests includes water absorption, water and chloride permeability, resistance to salt and sulphate attack etc. The results suggest that addition of latex improved the strength properties, energy absorption and critical crack induction stresses (CCIS) of non-fibered and fibered LWA concretes. In addition, the water absorption, water and chloride permeability, vulnerability to salt and sulphate attacks etc., were substantially reduced by latex due to their ability to form thin films within the pores and transition zones of hydrated cement pastes thereby improving the durability of LWA concrete. The amount of decrease/increase found in the test results are presented in the study. The presence of latex thereby proved to be beneficial in improving the overall properties of LWA concretes.
-
Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Kizhakkumodom Venkatanara, Harish
- Dattatreya, J K
- Neelamegam, M
-
Conference:
- Transportation Research Board 89th Annual Meeting
- Location: Washington DC, United States
- Date: 2010-1-10 to 2010-1-14
- Date: 2010
Language
- English
Media Info
- Media Type: DVD
- Features: Figures; References; Tables;
- Pagination: 16p
- Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD
Subject/Index Terms
- TRT Terms: Aggregates; Chlorides; Concrete; Cracking of concrete pavements; Durability; Fly ash; Gravel; Lightweight aggregates; Permeability; Portland cement concrete; Steel fibers; Synthetic fibers
- Subject Areas: Highways; Materials; Pavements; I32: Concrete; I52: Construction of Pavements and Surfacings;
Filing Info
- Accession Number: 01155547
- Record Type: Publication
- Report/Paper Numbers: 10-3815
- Files: TRIS, TRB
- Created Date: Apr 28 2010 7:32AM