Short- and long-term compressive strength of mortars modified with hardening accelerating admixtures
More details
Hide details
1
Politechnika Śląska w Gliwicach, Wydział Budownictwa, ul. Akademicka 5, 44-100 Gliwice
Publication date: 2018-07-18
Zeszyty Naukowe Politechniki Częstochowskiej seria Budownictwo 2017;23(1)
KEYWORDS
ABSTRACT
This paper presents results of compressive strength tests for Portland cement mortars and mortars
with addition of ground granulated blast furnace slag (GGBFS). Mortars were modified with usage
of four different hardening accelerating admixtures. Compressive stress tests were conducted after
12 hours up to 360 days of curing. Effectiveness of those agents is higher for mortars made of cement with addition of GGBFS up to 28th day. After this term some of those admixtures have profitable
influence also. It is shown that not every hardening accelerating admixture cause decline of long-term
compressive strength of mortars made of some types of cement. Mortars with addition of GGBFS
obtains compressive strength after 7 days of curing close to its final strength. It is similarity to
CEM I 52,5R mortars without modification by admixtures (with notice to scale of phenomenon).