Partial Replacement of Cement by Waste Paper Pulp Ash and Its Effect on Concrete Properties

Table 15

Compressive strength loss (CSL) of OPC-WPPA and PPC-WPPA concrete cured in 2% sulfuric acid solution.

S. no.	Mix code	Average compressive strength before immersion in MPa	Average compressive strength after immersion in MPa	Compressive strength loss (CSL) in %
1	OPC-WPPA0	34.579	31.571	8.825
2	OPC-WPPA5	36.827	33.586	8.424
3	OPC-WPPA10	31.976	31.128	2.587
4	OPC-WPPA15	26.934	26.503	1.526
5	PPC-WPPA0	29.818	27.499	7.791
6	PPC-WPPA5	27.091	24.996	7.720
7	PPC-WPPA10	26.496	24.530	7.428
8	PPC-WPPA15	23.066	21.539	6.677

Bold shows control mix.