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

Table 11

Compressive strength of OPC-WPPA and PPC-WPPA concrete.

S. no.	Mix code	Average compressive strength
		3 days		7 days		28 days
		Load (kN)	Strength (MPa)	Load (kN)	Strength (MPa)	Load (kN)	Strength (MPa)
1	OPC-WPPA0	521.219	23.165	590.960	26.265	778.035	34.579
2	OPC-WPPA5	548.01	24.356	637.832	28.348	828.603	36.827
3	OPC-WPPA10	501.064	22.270	553.459	24.598	719.459	31.976
4	OPC-WPPA15	390.813	17.370	487.644	21.673	606.020	26.934
5	PPC-WPPA0	386.822	17.192	448.335	19.926	670.890	29.818
6	PPC-WPPA5	368.035	16.357	436.584	19.404	609.541	27.091
7	PPC-WPPA10	355.271	15.789	426.142	18.940	596.148	26.496
8	PPC-WPPA15	351.652	15.621	423.941	18.842	518.978	23.066

Bold shows control mix.