Testing of Action of Direct Flame on Concrete

Table 3

Physical-mechanical properties of samples before heating.

Mixture	Density kg/m^3	Compressive strength N·mm^−2	Flexural strength N·mm^−2	Moisture; %
CEM I - GR-PF	2 010	21.5	4.2	4.4
CEM III/B - B-PF	2 450	37.7	6.2	4.1
CEM III/B - B-SF	2 500	27.7	5.6	2.9
CEM III/B - B	2 620	33.9	6.4	3.7
CEM I - GR-SCC	2 280	56.6	8.1	4.2