Synergistic interaction of polypropylene fibres in latex modified high strength concrete

• Autorzy: Thirumurugan S. , Sivakumar A.
• Języki publikacji: EN

Abstrakty

EN

Synthetic polymer latexes, such as styrene–butadiene rubber (SBR) latex addition in Portland cement has gained wider acceptance in many applications in the construction industry. Polymer-modified cementitious systems seals the pores and micro cracks developed during hardening of the cement matrix, by dispersing a film of polymer phase throughout the concrete. A comprehensive set of experimental test were conducted for studying the compressive properties of SBR latex polymer with crimped polypropylene fibres at relative volume fractions of 0.1 and 0.3%. The results indicated that the addition of polypropylene fibre has little effect on the reduction in the workability of concrete composite containing fly ash and SBR Latex. Increase in polypropylene fibres upto 0.3% Vf showed increase in compressive strength upto 57.5MPa. The SBR concrete without fibre showed an increase in strength upto 20 % compared to plain concrete. Test results also indicated that the compressive strength was increased in SBR fibre concrete by means of an ordinary dry curing process than wet curing because of their excellent water retention due to polymer film formation around the cement grains. On the contrary the compressive strength reduces for SBR fibre concretes under wet curing compared to dry curing.

Słowa kluczowe

EN

compressive strength; polymer concrete; polypropylene fibre; fly ash; ultrasonic pulse; velocity; high strength concrete

PL

wytrzymałość na ściskanie; polimerobeton; włókna polipropylenowe; popiół lotny; impuls ultradźwiękowy; prędkość; beton wysokiej wytrzymałości

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2013
• Tom: Vol. 59, nr 3
• Strony: 321--335
• Opis fizyczny: Bibliogr. 15 poz., il., tab.

Twórcy

autor

Thirumurugan S.

autor

Sivakumar A.

• Structural Engineering Division, VIT University, Vellore, Tamil Nadu, India

Bibliografia

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