Research Article | | Peer-Reviewed

Experimental Investigation on Partial Replacement of River Sand with Waste Brick and Laterite Soil in Concrete Production

Received: 16 December 2024     Accepted: 2 January 2025     Published: 21 August 2025
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Abstract

Concrete stands as the most widely used building material in the world due to its affordability, accessibility, and durability as well as its adaptability and diversity. Due to these developing countries, like Ethiopia, are facing a scarcity of river sand in quality and quantity that satisfies the demand for rapid infrastructure growth. The balance between material availability and demand will be disrupted by this rise in demand. Therefore, in order to handle the circumstance, an alternate substance is needed. This study's primary objective was to examine the workability, durability, strength, and cost of partially replacing sand for normal strength concrete with waste brick and laterite soil. The purpose of this experimental study was to examine the physical and mechanical characteristics of concrete that contained laterite soil and waste brick. And this study contains 13 distinct set of mixes, including the control mix utilized in the investigations were available. For concrete with a compressive strength of 25 MPa without additives, mixes with a consistent water-to-cement ratio of 0.49 and slump ranging from 75 to 100 mm were used in this study. And right after mixing, each fresh concrete mix’s workability was assessed. After three, seven, and twenty-eight days, the compressive strengths of 117 concrete cubes measuring 150 mm by 150 mm by 150 mm were evaluated. In comparison to conventional concrete, concrete containing waste brick and laterite soil as a natural substitute for sand shows superior compressive strength and lower proportion of water absorption which is an indication of better durability. However, as the percentage of waste brick and laterite soil replacement increased, workability decline. Concrete having 45% waste brick and 22% laterite soil was the optimum replacement rate, which has 4.43% water absorption capacity and can reduce concrete costs by up to 4.58%.

Published in Journal of Civil, Construction and Environmental Engineering (Volume 10, Issue 4)
DOI 10.11648/j.jccee.20251004.14
Page(s) 166-174
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2025. Published by Science Publishing Group

Keywords

Compressive Strength, Concrete, Fine Aggregate, Laterite Soil, Waste Brick

1. Introduction
Around 4.4 billion tons of concrete are produced year worldwide, but by 2050, that amount is predicted to increase to almost 5.5 billion tons. This places it among the world's biggest consumers of natural resources .
Currently, Riverbeds are the primary natural supplies of sand, and these natural resources are rapidly running out. Due to these shortages are mostly caused by land-use conflicts, transportation, growing building, and environmental issues brought on by fast urbanization. Additionally, when resources are depleted, low-quality sand is produced and supplied, which results in defects in applications used to produce concrete . Therefore, rather than making aggregates and minerals from virgin sources, it is important to discover a locally abundant supply of natural material, industrial and building wastes, or demolish work as an alternative. However, when construction increases, a large amount of garbage is produced, which has both direct and indirect effects on the environment . Concern about the planet's future led to the introduction of sustainable construction since the building sector is known to use a lot of natural resources and generate a lot of waste .
Brick is one of the most widely used conventional construction materials throughout the world . The masonry of ancient time’s in Gondarian time involved two major materials one of them is brick manufactured from sun-dried mud or burned clay and shale .
One of the most popular traditional building materials in the world is brick . Bricks made from sun-dried mud or burned clay and shale were one of the two main materials used in Gondarian time as building masonry product . But during and after the Italian invasion bricks application becomes widely spread as masonry construction for different functional buildings in Gondar . And 1.5 trillion bricks are produced globally each year (CCAC, 2015). Annually above 497,000 tons of brick/brick rubble is generated . Clay brick wastes typically come in a variety of forms. It could have been caused by errors made during production, the use of improper materials, transportation, or the most frequent source, which is a significant amount of demolished material. Sometimes, it could cost more to remove this material from the cart . This waste may be utilized as a replacement for sand in concrete production.
Tropical Laterite soil, which can vary in color, is found in portions of Africa, Asia, and America. In addition to the potential advantages of using laterite in concrete, such as better residual concrete structure, lower construction costs, increased resistance to cracking and spalling, and better post-yielding and post-cracking behavior, its neglect as an engineering material is associated with uncertainty regarding its strength and other structural characteristics like creep, shrinkage, and long-term durability . These accessible materials haven't been put to the test or given the go-ahead to be widely used in Ethiopian building, though.
Nowadays there is a scarcity of sand and it becomes a very difficult process to get sand easily in an economical way . Overcoming this problem is very essential by finding alternative materials. Hence, the general objective of the study is to determine whether using of waste brick and laterite soil in as ideal replacement of riverbed sand in an experimental setup.
2. Materials and Methods
Following the EBCS2:1995 standard, 117 concrete cubes measuring 150 mm by 150 mm by 150 mm were prepared and tested Waste brick: laterite soil ratios of 2:1, 1:1, and 1:2 were employed, and the combined level of both waste brick and laterite soil increased from the percentage value 33 to 50 to 67 to 100 in order to replace natural sand. This setup yields 13 different sets of a mix including the control concrete. Each concrete cubes was prepared by applying a compressive strength of 25 Mpa (C-25). The cement content for all mixes will be 394 kg/m3. And right after mixing, each fresh concrete mix’s workability was evaluated. Waster absorption was carried out at the ages of concrete 28 days to check the durability of the concrete according to ASTM C642. The parent 100 × 200 mm dry hard cylinder concrete required to be cut into three little cylinders, each measuring 100 mm in diameter and 50 mm in height. To remove the end effects, thin portions from both ends have to be thrown away during the cutting process. No admixture was used for this research.
Table 1. Shows the proportioning and test specimens.

w/c

Sand (%)

Waste brick (%)

Laterite soil (%)

Number of cubes

Total

3 day

7 day

28 day

Constant

100

0

0

3

3

3

9

67

11

22

3

3

3

9

67

16.5

16.5

3

3

3

9

67

22

11

3

3

3

9

50

17

33

3

3

3

9

50

25

25

3

3

3

9

50

33

17

3

3

3

9

33

22

45

3

3

3

9

33

33.5

33.5

3

3

3

9

33

45

22

3

3

3

9

0

33

67

3

3

3

9

0

50

50

3

3

3

9

0

67

33

3

3

3

9

Total

117

2.1. Physical and Material Properties
2.1.1. Cement
Throughout the trial, Dangote Cement PLC's Ordinary Portland Cement (OPC) of grade 42.5R was utilized. Ordinary Portland cement (OPC) was conducted on the cement to confirm the Ethiopian standard.
Table 2. Cement test.

Item no.

Description

Test Result

1

Consistency Test of Cement

Water -Cement ratio (%)

30%

Water (gram)

150

Penetration of needle (mm)

11

2

Setting Time of Cement

Initial setting time of the paste (min)

60 min

Final setting time of the paste (min)

510 (8 hr. 30 min)

2.1.2. Properties of River Sand, Laterite Soil and Waste Brick, and Course Aggregate
Aggregates underwent a number of experiments in order to design and create a concrete mix. Sieve analysis, bulk and dry density, moisture content, absorption capacity, unit weight, and other tests are conducted. All aggregates tests were done to conform to ASTM and Ethiopian standards requirements.
Table 3. The physical properties of Aggregates.

Item no.

Description

Sand

Laterite soil

Waste brick

Course aggregate

1

Fines modules

2.75

2.9

-

2

Nominal maximum aggregate size

-

-

-

25 mm

3

Silt content

3.45%

3.45%

5.26%

-

4

Moisture content

2.88%

14.68%

0.41%

0.25%

5

Dry unit weight

1814.78 kg/m3

1303.62 kg/m3

1055.7 kg/m3

1747.03 kg/m3

6

Absorption capacity

3.88%

16.62%

15.2%

0.55%

7

Specific gravity

Bulk

2.64

1.93

1.9

2.9

Bulk (SSD)

2.74

2.25

2.2

2.92

Apparent

2.94

2.83

3.08

2.95

2.2. Properties of Fresh Concrete
With varied amounts of alternate sand replacement, thirteen distinct concrete mixes were created.
Table 4. Workability of mixes.

Mix-no.

Mix 1

Mix 2

Mix 3

Mix 4

Mix 5

Mix 6

Mix 7

Mix 8

Mix 9

Mix 10

Mix 11

Mix 12

Mix 13

Slump (mm)

75 mm

60 mm

65 mm

60 mm

70 mm

85 mm

95 mm

70 mm

75 mm

90 mm

70 mm

75 mm

100 mm

According to the test results, the slump test results for all but Mix 7, Mix 10, and Mix 13 are higher than or equivalent to the control mix. This indicates that the workability of the concrete mix using this alternative sand is comparatively lower than that of the control mixes. This is mainly because both waste brick and laterite soil have a larger absorption, in turn, they need more water.
2.3. Hardened Concrete Properties
2.3.1. Compressive Strength
Testing concrete cubes measuring 150 mm in accordance with EBCS2:1995 allowed for the determination of the specimens' compressive strength Weighing and measuring each specimen allowed us to calculate the concrete's density and cube area. At three, seven, and twenty-eight days, the concrete's hardened characteristics were determined.
2.3.2. Concrete Water Absorption
Concrete absorption characteristics are one way to evaluate the material's durability. It is evident from Table 6 that waste brick and laterite soil concrete have higher water absorption than the reference concrete when compared to all other mixes at their 28-day age. And as waste brick and laterite sand percentage increase 0 to 33% to 50% to 67% to 100% (Mix 1 to Mix 13), the water absorption percentage also increases. According to Nevile (2008), the majority of high-quality concretes have absorption rates of less than 10% . Since all concretes contain waste brick and laterite soil where their water absorptions capacity was below 10%, satisfy the requirement for high quality concrete.
Table 5. Compresive strength of concrete mixes.

Mix-no.

Concrete Mix 1

Concrete Mix 2

Concrete Mix 3

Concrete Mix 4

Concrete Mix 5

Concrete Mix 6

Concrete Mix 7

Concrete Mix 8

Concrete Mix 9

Concrete Mix 10

Concrete Mix 11

Concrete Mix 12

Concrete Mix 13

3 day

18.9

19.2

16.87

24.57

17.1

18.67

17.87

16.8

18.87

18.7

15.63

14.1

15.47

7 day

22.6

25.27

25.03

29.7

22.2

24.8

24.6

19.8

21.6

21.4

17.7

17.5

20

28 day

35.6

39.23

41.2

42.9

35.87

38.77

39.7

30.13

35.3

39.4

30.1

30.07

33.43

Table 6. Concrete absorption of Water.

Mix-no.

Mix 1

Mix 2

Mix 3

Mix 4

Mix 5

Mix 6

Mix 7

Mix 8

Mix 9

Mix 10

Mix 11

Mix 12

Mix 13

S1

5.29

5.34

4.94

4.82

5.4

5.3

5.4

6.39

7.17

3.8

6.74

7.02

5.89

S2

4.68

4.62

4.15

3.9

4.35

4.25

4

5.54

3.16

4.39

5.53

5.52

4.84

S3

4.23

3.55

3.64

3.42

4.25

3.9

3.99

4.85

4.94

5.11

4.79

5.02

4.3

Average

4.73

4.5

4.24

4.05

4.67

4.48

4.46

5.59

5.23

4.43

5.69

5.85

5.01

2.4. Univariate Factorial Analysis of Variance for Compressive Strength of Concrete
The factors influencing the compressive strength of concrete are examined using a univariate factorial ANOVA with a 95% confidence interval and a significant level of α = 0.05. According to the decision rule for the F-test that was performed on SPSS for the main effect, the variable is regarded as a significant factor that influences the compressive strength of concrete if the P-value is less than 0.05, in which case the null hypothesis is rejected; if the P-value is greater than 0.05, the variable is reflected as non-significant, and the null hypothesis is not rejected.
Table 7. Main effect and interaction effects of SPSS test results.

Source

Sum of Squares

Degree of freedom

Mean Square

F Statistc

Significant.

Partial Eta Squared

Corrected Model

2961.410a

38

77.932

67.929

.000

.975

Intercept

25001.353

1

244469.724

8056.31

.000

.997

Age

2523.919

2

1261.96

415.483

.000

.972

Brick

56.024

2

28.012

9.223

.001

.435

Laterite

98.743

2

49.371

16.255

.000

.575

Age * Brick

54.849

20

2.742

.608

.798

.752

Age * Laterite

2893.317

32

90.416

7.967

.08

.977

Brick * Laterite

364.594

12

30.383

.304

.983

.123

Error

.000

0

0

Error

Total

28550.154

39

732.06

Total

Corrected Total

2961.410

38

77.93

Corrected Total

Dependent Variable: compressive strength of test result
The null hypotheses μ01, μ02, and μ03 are rejected since Table 7 shows that the major effects of brick, laterite soil, and age have a substantial impact on the compressive strength of concrete, with a p-value of less than 0.05 for the 95% confidence range. Considering that the p-value is higher than 0.05, the null hypotheses μ04, μ05, and μ06 are not rejected because the interaction effect is not major.
2.5. Modeling
A variety of natural constants in the form of coefficients (β) and constants (α) can be produced when waste brick and laterite soil interact with one another in different ways at equal rates for different combined or partially combined rates. So based on SPSS v20 for three mix designs setting up mathematical modeling formulations was developed. The independent variable in this context is the replacement rate, which refers to the percentage of substitute sand materials. The dependent variable is the compressive strength.
To model this relationship, a formula for linear regression is employed; the formula will be look like .
Y=α+βX
Where X is replacement percentage; Y is the compressive strength; β is the slope of the line and α is the Y intercept
a. Dependent Variable: compressive strength
For all combined rate of laterite soil twice the waste brick or 2:1 ratio, based on regression analysis for 2:1, having coefficient (β) = -0.077 and constant (α) = 38.038. So our equation would be y=38.038 - 0.077x. Where x is the percent of replacement and y is compressive strength.
Figure 1. Compressive strength graph for laterite soil to waste brick 2:1 ratio.
So based on the regression analysis result for 1:1 or an equal ratio of waste brick and laterite soil replacement rate, having coefficient (β) = -0.062 and constant (α) = 39.409. So the equation would be y=39.409 - 0.062x. Where x is the percent of replacement and y is compressive strength.
Figure 2. Compressive strength graph for laterite soil to waste brick 1:1 ratio.
The last model is prepared for the concrete mix with waste brick twice that of laterite soil using spss v-20.
Based on regression analysis for waste brick twice laterite soil contains or 1:2 replacement rate coefficient (β) = -0.03 and constant (α) = 39.712. So the equation would be y=39.712 - 0.03x. Where x is the percent of replacement and y is compressive strength.
Figure 3. Compressive strength graph for laterite soil to waste brick 1:2 ratio.
Generally, from these three graphs at a replacement rate of waste brick twice laterite soil improved concrete compressive strength more than the rest ratios when compared with control concrete.
2.6. Economic Analysis
Partial replacement of sand at 67% by waste brick and laterite soil having waste brick twice laterite sand can save 4.16% cost than the control mix. Waste brick and laterite sand with 50% replacement of the control mix is around 3.13% averagely cheaper than the control mix. Even this alternative material with a 33% partial replacement is also cheaper than the control mix by 2.02% averagely. Generally, partial replacement of sand by waste brick and laterite soil is pretty much cheaper than the control mix and it can be a potential solution for an increasing cost of virgin aggregate.
Figure 4. Cost comparison indifferent mix with conventional concrete.
2.7. Efficient Substitution of Sand with Waste Brick and Laterite Soil
Optimization of the concrete mix design is a process of a search for a mix having the sum of the costs of the ingredients is lowest, but fulfills the required strength, workability, and durability. Figure 5 shows the percentage gain or decrease in strength, cost, and workability with the control mix to determine the best or most efficient replacement of concrete with waste brick and laterite soil.
Figure 5. Percentage difference in compressive strength, workability, and cost.
3. Conclusion
The following conclusions are derived from the experimental investigation's findings by partial replacing sand with waste brick and laterite soil in concrete production.
1. When sand is partially replaced with waste brick and laterite soil up to 67%, concrete's compressive strength can be increased by 10.67% with a water absorption of 4.43%; however, when waste brick and laterite soil replacement rates are increased further, the concrete's compressive strength decreases, while the workability and water absorption of the concrete are increased.
2. Based on the cost estimation, it was clearly established that concrete contains this alternative material made of waste brick and laterite soil can save 4.58% of the total cost than using ordinary concrete production.
3. For C-25, using a water to cement ratio of 0.49, the combined replacement rate of 67% waste brick and laterite soil, or 45% waste brick and 22% laterite soil, will provide an efficient and ideal natural sand substitution rate from the perspectives of strength, durability, workability, and cost.
4. Recommendations
In light of the conclusion above the following recommendations are stipulated.
1. Further studies and standardization should be done on laterite sand as fine aggregate and coarse aggregate replacement due to its abundance in Ethiopia.
2. Waste brick has pozzolanic properties so, blending it with laterite sand will give a higher compressive strength than the regular concrete, beside of having green, good quality and environmentally friendly concrete, so the regulatory body should encourage the use of waste brick and laterite sand in concrete production.
3. Further study should be conducted for different compressive strength containing waste brick and laterite sand.
This study emphasizes workability, durability and compressive strength properties of concrete containing waste brick and laterite sand as partial replacement of sand. However, further studies are suggested in the following areas:
1. It is important to investigate the impact of partially substituting waste brick for cement and laterite sand for sand.
2. Production of high strength concrete using laterite sand and waste brick as sand and course aggregate replacement respectively.
3. The impact of using admixture to partially replace sand with waste brick and laterite sand should be investigated.
Abbreviations

ACI

American Concrete Institute

ASTM

American Society for Testing Materials

ERA

Ethiopian Road Authority

FM

Fineness Modulus

HCB

Hollow Concrete Block

OPC

Ordinary Portland Cement

PPC

Portland Pozzolana Cement

W/C

Water to Cement Ratio

ETB

Ethiopian Birr

IS

Indian Standard

RS

River Sand

EBCS

Ethiopian Building Code Standard

Acknowledgments
This paper has become a reality due to the generous help and support of many individuals. I have deepest gratitude and appreciation for University of Gondar, Ethiopian Road Authority for all of their help and encouragement during the entire process.
Author Contributions
Wondirad Worku Mekonen: Conceptualization, Data curation, Formal Analysis, Investigation, Methodology, Software, Visualization, Writing – original draft
Bahiru Bewket Mitkie: Project administration, Resources, Supervision, Validation, Visualization, Writing – review & editing
Efrata Maru Lakew: Project administration, Resources, Supervision, Validation, Visualization, Writing – review & editing
Data Availability Statement
Upon reasonable request, the corresponding author will provide the data supporting the study's conclusions. The data include references to relevant literature and materials used in the research, as detailed in the manuscript's references section. For access to supplementary materials or additional information related to the study, please contact the corresponding author.
Conflicts of Interest
The authors declare no conflicts of interest.
References
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[2] Alaa, A. S. and Ali, A. M. (2013). Manufacturing of Bricks in the Past, in the Present and in the Future: A state of the Art Review. International Journal of Advances in Applied Sciences (IJAAS). Volume. 2. No. 3. Pg. 145-156.
[3] Annual book of ASTM standards, Volume 04.05. (1999). Standard Terminology of structural clay products. ASTM C 43-98a. The ASTM committee on standards.
[4] Awolusi, T. F., Sojobi, A. O. and Afolayan, J. O. (2017). SDA and laterite applications in concrete: Prospects and effects of elevated temperature. Civil & Environmental Engineering.
[5] Cachim, P. B. (2009). Mechanical Properties of Brick Aggregate Concrete. Construction and Building Materials. Volume 23. No. 3. Pg. 1292-1297. Climate and Clean Air Condition (CCAC). (2015). CCAC Initiative: Mitigating Black Carbon and Other Pollutants from Brick Production.
[6] Denamo Addissie. (2005). Handling of Concrete Making Materials in the Ethiopian Construction Industry. Addis Ababa, Ethiopia: M.Sc. Thesis. Addis Ababa University. Addis Ababa Institute of Technology. Department of Civil Engineering.
[7] Ethiopian Building Code 1995.
[8] Eskinder Desta. (2015). Investigation of the Binding Materials Properties and Assessment of Durability Issue in Fasil Ghibbi Palace in Gondar. Engineering Failure Analysis Volume 93, November 2018, Pages 309-316.
[9] Jonathan, H. (2019). Concrete production produces eight percent of the world's carbon dioxide emissions. The Architect’s Newspaper.
[10] Kumari, K. and Yadav, S. (2018) Linear Regression Analysis Study. Journal of the Practice of Cardiovascular Sciences, 4, 33-36.
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[12] Sintayehu Assefa and Moges Getahun. (2019). Properties of Brick Waste as Coarse Aggregate Material in Concrete. Appl. J. Envir. Eng. Sci. 5 N°2 (2019): 144-152. corpus id: 198401202.
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    Mekonen, W. W., Mitkie, B. B., Lakew, E. M. (2025). Experimental Investigation on Partial Replacement of River Sand with Waste Brick and Laterite Soil in Concrete Production. Journal of Civil, Construction and Environmental Engineering, 10(4), 166-174. https://doi.org/10.11648/j.jccee.20251004.14

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    Mekonen, W. W.; Mitkie, B. B.; Lakew, E. M. Experimental Investigation on Partial Replacement of River Sand with Waste Brick and Laterite Soil in Concrete Production. J. Civ. Constr. Environ. Eng. 2025, 10(4), 166-174. doi: 10.11648/j.jccee.20251004.14

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    AMA Style

    Mekonen WW, Mitkie BB, Lakew EM. Experimental Investigation on Partial Replacement of River Sand with Waste Brick and Laterite Soil in Concrete Production. J Civ Constr Environ Eng. 2025;10(4):166-174. doi: 10.11648/j.jccee.20251004.14

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  • @article{10.11648/j.jccee.20251004.14,
      author = {Wondirad Worku Mekonen and Bahiru Bewket Mitkie and Efrata Maru Lakew},
      title = {Experimental Investigation on Partial Replacement of River Sand with Waste Brick and Laterite Soil in Concrete Production
    },
      journal = {Journal of Civil, Construction and Environmental Engineering},
      volume = {10},
      number = {4},
      pages = {166-174},
      doi = {10.11648/j.jccee.20251004.14},
      url = {https://doi.org/10.11648/j.jccee.20251004.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jccee.20251004.14},
      abstract = {Concrete stands as the most widely used building material in the world due to its affordability, accessibility, and durability as well as its adaptability and diversity. Due to these developing countries, like Ethiopia, are facing a scarcity of river sand in quality and quantity that satisfies the demand for rapid infrastructure growth. The balance between material availability and demand will be disrupted by this rise in demand. Therefore, in order to handle the circumstance, an alternate substance is needed. This study's primary objective was to examine the workability, durability, strength, and cost of partially replacing sand for normal strength concrete with waste brick and laterite soil. The purpose of this experimental study was to examine the physical and mechanical characteristics of concrete that contained laterite soil and waste brick. And this study contains 13 distinct set of mixes, including the control mix utilized in the investigations were available. For concrete with a compressive strength of 25 MPa without additives, mixes with a consistent water-to-cement ratio of 0.49 and slump ranging from 75 to 100 mm were used in this study. And right after mixing, each fresh concrete mix’s workability was assessed. After three, seven, and twenty-eight days, the compressive strengths of 117 concrete cubes measuring 150 mm by 150 mm by 150 mm were evaluated. In comparison to conventional concrete, concrete containing waste brick and laterite soil as a natural substitute for sand shows superior compressive strength and lower proportion of water absorption which is an indication of better durability. However, as the percentage of waste brick and laterite soil replacement increased, workability decline. Concrete having 45% waste brick and 22% laterite soil was the optimum replacement rate, which has 4.43% water absorption capacity and can reduce concrete costs by up to 4.58%.},
     year = {2025}
    }
    

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  • TY  - JOUR
    T1  - Experimental Investigation on Partial Replacement of River Sand with Waste Brick and Laterite Soil in Concrete Production
    
    AU  - Wondirad Worku Mekonen
    AU  - Bahiru Bewket Mitkie
    AU  - Efrata Maru Lakew
    Y1  - 2025/08/21
    PY  - 2025
    N1  - https://doi.org/10.11648/j.jccee.20251004.14
    DO  - 10.11648/j.jccee.20251004.14
    T2  - Journal of Civil, Construction and Environmental Engineering
    JF  - Journal of Civil, Construction and Environmental Engineering
    JO  - Journal of Civil, Construction and Environmental Engineering
    SP  - 166
    EP  - 174
    PB  - Science Publishing Group
    SN  - 2637-3890
    UR  - https://doi.org/10.11648/j.jccee.20251004.14
    AB  - Concrete stands as the most widely used building material in the world due to its affordability, accessibility, and durability as well as its adaptability and diversity. Due to these developing countries, like Ethiopia, are facing a scarcity of river sand in quality and quantity that satisfies the demand for rapid infrastructure growth. The balance between material availability and demand will be disrupted by this rise in demand. Therefore, in order to handle the circumstance, an alternate substance is needed. This study's primary objective was to examine the workability, durability, strength, and cost of partially replacing sand for normal strength concrete with waste brick and laterite soil. The purpose of this experimental study was to examine the physical and mechanical characteristics of concrete that contained laterite soil and waste brick. And this study contains 13 distinct set of mixes, including the control mix utilized in the investigations were available. For concrete with a compressive strength of 25 MPa without additives, mixes with a consistent water-to-cement ratio of 0.49 and slump ranging from 75 to 100 mm were used in this study. And right after mixing, each fresh concrete mix’s workability was assessed. After three, seven, and twenty-eight days, the compressive strengths of 117 concrete cubes measuring 150 mm by 150 mm by 150 mm were evaluated. In comparison to conventional concrete, concrete containing waste brick and laterite soil as a natural substitute for sand shows superior compressive strength and lower proportion of water absorption which is an indication of better durability. However, as the percentage of waste brick and laterite soil replacement increased, workability decline. Concrete having 45% waste brick and 22% laterite soil was the optimum replacement rate, which has 4.43% water absorption capacity and can reduce concrete costs by up to 4.58%.
    VL  - 10
    IS  - 4
    ER  - 

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