FREEZE-THAW RESISTANCE OF AIR-ENTRAINED HIGH STRENGTH CONCRETE
Journal Title: Structure and Environment - Year 2017, Vol 0, Issue 1
Abstract
The paper presents the programme of research aimed at fi a recipe for high strength self-compacting and freeze-thaw resistant concrete. The programme included batching fi concrete mixtures with varied W/B ratios (0.28-0.36) and various contents of GGBS relative to the mass of cement (0-30% m.c.). The infl of W/B ratio and GGBS content on the strength, water absorption and freeze-thaw resistance of concrete was analysed. Since the combined action of various factors, i.e., a simultaneous use of superplasticizer, air entraining agent and slag, can impede the achievement of the air pore structure with desired parameters, an innovative method of concrete mixture air entrainment was applied. The method involves in- troducing into the mixture solid particles (microspheres) with specifi sizes that remain unchanged and stable over time. It follows from the results that it is possible to design and produce high strength, self-compacting and freeze-thaw resistant concrete with the use of locally available materials.
Authors and Affiliations
Agnieszka Molendowska, Jerzy Wawrzeńczyk
Keywords
Related Articles
- EP ID EP244937
- DOI -
- Views 118
- Downloads 0
THE POSSIBILITY OF THE USE OF SECONDARY RAW MATERIALS FROM ENERGY AND IRON&STEEL INDUSTRIES FOR GLASS-CERAMICS PRODUCTION
An effective way to glass strengthening is controlled crystallization, which results in obtaining the material with very favourable mechanical properties compared to parent glass. Crystallization process is conducted bet...
CARRYING CAPACITY ASSESSMENT AND STRENGTHENING OF REINFORCED CONCRETE STRUCTURES OPERATING IN CHEMICALLY AGGRESSIVE ENVIRONMENT
The paper presents a case of an industrial building in the chemical works, in which intensive production processes caused corrosion and weakened structural members. The results of investigations and static strength analy...
DISPERSED PHASE BREAKUP AT EMULSION BOILING
In this paper we consider the breakup processes of the emulsion dispersed phase. The possibility of large droplets splitting by small ones under boiling water phase due to a sharp release of pressure is shown, we also ta...
GIS TECHNOLOGY AS A TOOL FOR PROTECTING LANDSCAPE AND CULTURAL VALUES IN SPATIAL PLANNING
The issue of a landscape protection is quite a significant element of municipal spatial policy. Currently, there is no legal obligation to implement, within the statutory activities of institutions responsible for the la...
THE INFLUENCE OF CEMENT BYPASS DUST ON THE PROPERTIES OF CEMENT CURING UNDER NORMAL AND AUTOCLAVE CONDITIONS
This paper analyses the properties of cement binders composed with cement CEM I 42.5R and cement bypass dust in amount of 0.5, 1.0 and 5.0% by mass of binder, curing under standard and additionally autoclave conditions....