Experimental study of strength and durability properties of fly ash-lime-quarry dust (FALGQ) bricks

Sankar, Pramod; Kumar, Muthuswamy Saraswati Ravi

doi:10.1590/1517-7076-RMAT-2024-0102

Pramod Sankar

Noorul Islam Center for Higher Education. Tamilnadu, India.

https://orcid.org/0009-0003-5538-4582

Muthuswamy Saraswati Ravi Kumar

PSN Engineering College, Department of Civil Engineering. Tamilnadu, India.

Corresponding Author: Pramod Sankar, e-mail: pramodsankar198@gmail.com, drmsr1976@gmail.com

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Figure 1
Grain size distribution.

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Figure 2
Liner expansion on saturation.

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Figure 3
Weight loss after the durability test.

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Figure 4
Stress-strain relationship set-up.

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Figure 5
IRA of FALGQ and country burnt clay brick.

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Figure 6
Acid test.

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Figure 7
Sulphate test.

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Figure 8
Geelong erosion test details.

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Figure 9
Erosion test of FALGQ and county burnt clay brick.

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Figure 10
Shrinkage test.

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Figure 11
(a) Split tensile strength of FALGQ brick. (b) Split tensile strength of country burnt clay brick.

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Figure 12
FALGQ and country burnt clay brick.

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Figure 13
Compressive strength of mortar.

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Figure 14
Flexure bond strength of FALGQ and country bunt brick.

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Figure 2
Liner expansion on saturation.

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Figure 3
Weight loss after the durability test.

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Figure 4
Stress-strain relationship set-up.

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Figure 5
IRA of FALGQ and country burnt clay brick.

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Figure 6
Acid test.

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Figure 7
Sulphate test.

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Figure 8
Geelong erosion test details.

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Figure 9
Erosion test of FALGQ and county burnt clay brick.

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Figure 10
Shrinkage test.

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Figure 11
(a) Split tensile strength of FALGQ brick. (b) Split tensile strength of country burnt clay brick.

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Figure 12
FALGQ and country burnt clay brick.

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Figure 13
Compressive strength of mortar.

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Figure 14
Flexure bond strength of FALGQ and country bunt brick.

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Figure 15
Wet and dry density.

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Figure 16
Water absorption.

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Figure 17
Compressive strength development.

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Figure 18
Stress-Strain graph of country burnt clay brick an FALGQ bricks.

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Figure 19
Split tensile strength.

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Figure 20
Modulus of rupture test.

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Figure 21
Compressive strength of cement mortar.

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Figure 22
Stress-strain curve of FALGQ and country burnt clay brick.

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Table 1
Grade definition and strength of FALGQ brick.

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Table 2
Acid and sulphate test.

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Table 3
Erosion property.

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Table 4
Characteristics of fly ash bricks.

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Table 5
Modulus, erosion, shrinkage property.

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Table 6
Flexural bond strength of FALGQ and country burnt clay brick.

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(1)

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(2)

GRADE	TEST NAME	DAYS
GRADE	TEST NAME	7^th	14^th	28^th	56^th	96^th
M11	Wet density	1719	1747.7	1797	1781.8	1802
	Dry density	1629	1547	1564	1529	1544
	Water absorption	5.7	13	14.9	16.5	16.7
	Compressive strength	3.7	8.9	9.8	12	13.6

SOLUTIONS NAME	%	BRICK NAME	COMPRESSIVE STRENGTH (MPa)	WEIGHT LOSS (%)
Sulphate test (28^th day)	5	FALGQ	6.3	1.1
	3		7.8	0.6
	1		11.8	0.1
	5	Country burnt clay	4.8	1.6
	3		5.1	1.3
	1		5.8	1.2
Acid test (28^th day)	5	FALGQ	5.1	2.4
	3		7.7	2
	1		8.54	0.8
	5	Country burnt clay	4.35	0.9
	3		4.35	0.8
	1		5.8	0.5

AVG DEPTH OF PIT IN mm	ERODIBILITY INDEX	RATING
FALGQ	0	Non-erosive
Country burnt clay	2	Slight erosive

DETAIL OF THE PROPERTY	UNITS	FALGQ	COUNTRY BURNT CLAY BRICK
Wet compressive strength	MPa	15.01	7.4
Dry compressive strength	MPa	12	6.3
Wet-to-dry compressive strength ratio	%	0.8	0.85
Initial rate of absorption (IRA)	g/cm²/Min	0.3	0.9
Water absorption	%	16.5	21
Linear expansion on saturation	mm	0.015	0.024
Weight loss after durability test (wet to dry)	%	1.4–1.5	0.9–.07
Wet density		1781.8	1798
Dry density		1528	1485
Wet to dry density ratio		0.86	0.82

DETAIL OF THE PROPERTY	CONDITION	FALGQ	COUNTRY BURNT CLAY BRICK
Modulus of rupture test	Wet	1.18	0.7
Modulus of rupture test	Dry	1.3	0.89
Erosion test of brick (mm)	Wet	Nil	1 mm
Shrinkage test of brick	Wet	Nil	–

THE COMPRESSIVE STRENGTH OF CEMENT MORTAR IN 1:5 PROPORTION IS 9 Mpa
Details of property	FALGQ	Burnt clay brick
Brick strength ultimate (MPA)	34.5	15.2
Initial tangent modulus	8445.9	370
Peak at strain	0.00132	0.00956
First crack (MPA)	10	15
Flexure bond strength (MPa)	1.5	0.7
Failure type	Type-A, B	Type-C

[1] Corresponding Author: Pramod Sankar, e-mail: pramodsankar198@gmail.com, drmsr1976@gmail.com

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Experimental study of strength and durability properties of fly ash-lime-quarry dust (FALGQ) bricks

ABSTRACT