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

Table 1

Pretest result for compressive strength of C-25 concrete.

Average compressive strength
S. no.	Mix code	3 days		7 days		28 days
		Load (kN)	Strength (N/mm^2)	Load (kN)	Strength (N/mm^2)	Load (kN)	Strength (N/mm^2)
1	OPC-WPPA 0	275.340	12.237	448.458	19.931	660.803	29.369
2	OPC-WPPA 5	343.395	15.262	536.492	23.844	714.960	31.776