International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 06 | Jun 2024
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p-ISSN: 2395-0072
Durability Properties of Cement Concrete Using Laterite as Partial Replacement for Natural Aggregates Chethan Kumar N T1, Dr. K E Prakash2, Dr. Rajani V Akki3 1Asst. Professor, Dept. of Civil Engg. Malnad College of Engineering, Hassan-573 202,
Visvesvaraya Technological University, Belagavi - 590018
2Professor & Principal, Dept. of Civil Engg. Shree Devi Institute of Technology, Mangalore–574142,
Visvesvaraya Technological University, Belagavi - 590018
3Asst. Professor, Dept. of Civil Engg. East Point College of Engineering, Bangalore–560049,
Visvesvaraya Technological University, Belagavi - 590018 ---------------------------------------------------------------------***--------------------------------------------------------------------Very less number of research works are available on the application of laterite for the production of concrete.
Abstract – The coarse aggregates obtained from laterite
wastes are gaining importance in recent decades in view of scarcity of natural coarse aggregates. In this present study, concrete is designed for M30 mix proportion and the concrete mixture was developed using laterite waste as a partial replacement of natural aggregates at varying percentages (5%,10%,15% and 20%) as partial replacement of natural coarse aggregates. Also, the Laterite can be used as fine aggregates in concrete composites, hence the replacement is considered for fine aggregates too. These blends’ hardened properties, such as compressive strength and flexural strength were investigated. Among the said proportions of replacements, 15% replacement of natural coarse aggregates yielded promising results. 10% of fine aggregate provides satisfactory results. From the durability point of view, prepared samples were immersed in sea water and satisfactory results were obtained.
In a nutshell the Laterite can be used effectively along with the natural coarse aggregate and fine aggregates.
Significance of present study This research article primarily focuses on study, analysis and comparison of the compressive strength, flexural strength and durability behavior of concrete mixer at longer duration. Very limited studies were carried out by the researchers, however the current research work involves the combined effect of laterite as coarse aggregate and fine aggregate for the assessment of strength parameters and also durability parameters. This particular study provides a path towards sustainable construction practices which helps in the reduction of global warming and protecting natural resources
Key Words: Laterite, Eco friendly, Rigid pavements.
2. MATERIALS AND METHODS
1.INTRODUCTION
The details of the material used in the study for the production of concrete mix is shown in Fig1.(a),(b) & (c).
Construction of rigid pavements is increasing rapidly in India especially for low volume roads. The production of concrete mix involves materials like fine aggregate or river sand and coarse aggregate, stone quarry. Also these natural resources are not widely available abundantly and hence procurement of these materials is a challenging task due their non-availability. These demands for the use of alternate natural resources as a partial replacement/complete elimination of non-renewable natural resources. More number of studies are occurring for developing environment friendly sustainable materials are achieved with the replacement of natural aggregates with laterite soil. A quantum amount of laterite is available in western parts of Karnataka and also other regions of India where rate of rainfall is heavy. Also the concept of recycling is very essential for the present day construction activities. As mentioned above the laterite, after utilizing for various construction activities can be used as fine aggregate.
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Cement Ordinary Portland cement of grade 53 (OPC 53) which satisfies the requirements of IS 269:2015 was used, physical properties test examined as per IS 4031 and the results are represented in table 1. Table -1: Properties of Cement (a) Chemical composition of cement Constituent
Cao
SiO2
Al2O3
Fe2O3
MgO
SO3
Alkali
Percentage
62.1
21.1
5.0
3.4
2.29
2.44
1.5
(b) Physical properties of cement
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Initial setting time (mins.)
Final setting time (mins.)
Normal consistency (%)
110
195
31.1
ISO 9001:2008 Certified Journal
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