HOT-MIXED HIGH-STRENGTH CONCRETE AND LIGHTWEIGHT AGGREGATE CONCRETE
VARMBLANDAD HOEGHAALFAST BETONG OCH LAETTBALLASTBETONG
The purpose was to make the use of the concrete investigated possible in the production of prestressed prefabricated elements. The tests included the choice of cement and admixtures. There were also studies of the factors acting on the hot-mixed concrete properties, such as mixing temperature, cement content, content of admixtures, curing time and moisture - and temperature conditions during and after curing. The tests confirm that the strength development in hot-mixed concrete is influenced by temperature and the water-cement ratio. Retarding admixture lowered the water-cement ratio, stabilized the mobility of the fresh concrete in 30 minutes, reduced the curing time and gave only a small reduction in the 28-days strength compared with normal mixed-concrete. No losses in the 28-day strength were observed in hot-mixed normal concrete due to fast temperature rise, but there were small losses registered in lightweight aggregate concrete. /TRRL/
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Corporate Authors:
Chalmers University of Technology, Sweden
Audelningen Foer Byggnadsmaterial, Fack
S-402 20 Goeteborg 5, Sweden -
Authors:
- Berge, O
- Publication Date: 1974
Language
- Swedish
Media Info
- Features: Figures; References; Tables;
- Pagination: 83 p.
Subject/Index Terms
- TRT Terms: Admixtures; Aggregates; Cement content; Concrete; Concrete curing; Heat; High strength; High strength concrete; Hot mix asphalt; Laboratories; Lightweight concrete; Mixtures; Prefabricated structures; Prestressing; Properties of materials; Tests; Water cement ratio
- ITRD Terms: 4755: Concrete; 6743: Heat; 5537: High strength; 6237: Laboratory (not an organization); 4740: Lightweight concrete; 9047: Mixture; 5925: Properties; 6255: Test
- Subject Areas: Geotechnology; Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 00159813
- Record Type: Publication
- Source Agency: Swedish National Road and Transport Research Institute (VTI)
- Report/Paper Numbers: Report 74:1 Monograph
- Files: ITRD, TRIS
- Created Date: Dec 27 1977 12:00AM