International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
REVIEW PAPER ON SELF-CURING CONCRETE USING BIO-ADMIXTURES S. Jyothi Mrudula1, Dr. P. Sesha Ratnam2 1M.Tech , Department of Civil Engineering, Gayatri Vidya Parishad College for Degree and PG Courses(A),
Rushikonda, Visakhapatnam, A.P, India.
2Assistant Professor, Department of Civil Engineering, Gayatri Vidya Parishad College for Degree and PG
Courses(A), Rushikonda, Visakhapatnam, A.P, India. -----------------------------------------------------------------------***----------------------------------------------------------------------ABSTRACT: In the present scenario of water scarcity in the construction field, self-curing agents are being introduced and used to reduce the water requirement for curing of concrete. The research aims to investigate the effects of using Spinacia oleracea as a self-curing agent in concrete, in order to address the crisis of water scarcity in the construction industry. The self-curing agent will be added in varying dosages by mass of cement, and will be compared to conventionally cured concrete. The specimens were cured for different time periods. The goal is to analyze the behaviour (compressive strength, split tensile strength and flexural strength) and durability properties of the resulting concrete. In addition to strength, durability is also an important factor in the performance of concrete structures. The durability of the self-cured concrete will be evaluated by assessing the water absorption, sea water resistance and acid resistance of the specimens. The self-curing agent is expected to reduce water evaporation from the concrete, leading to increased water retention capacity compared to conventionally cured concrete. This, in turn, could potentially save a significant amount of water during the construction process. The results of the study could provide insights into the effectiveness of Spinacia oleracea as a self-curing agent and its potential for reducing water consumption in the construction industry.
KEYWORDS: Self-curing concrete, Conventional concrete, Spinacia oleracea, Behaviour, Durability, Water retention, Water evaporation.
1. INTRODUCTION GENERAL: Concrete is a widely used building material due to its durability, ease of manufacturing, and long service life. It is made by mixing cement, aggregates, and water together to form a hard matrix that binds the material into a stone-like substance. Different shapes can be achieved by using formworks, and there are two types of concrete mixes: nominal and design mix. Design mix is more economical as it is based on lab tests to determine the optimal mix proportions for achieving the required strength. The strength of the mix is denoted by M5, M10, M15, etc. The performance of concrete is a critical factor in the life of a structure, especially as construction continues to rapidly increase. One of the most important parameters affecting the performance of concrete is curing. According to the IS 456:2000 code clause (13.5), curing is the process of maintaining a satisfactory temperature regime while preventing the loss of moisture from the concrete. 1.2 CURING: Curing is a critical period during which sufficient moisture content must be maintained to ensure that the cement particles continue to hydrate until the desired properties are developed in the concrete. The process of cement hydration is a long-term, continuous process that occurs at a decreasing rate over time. Curing allows for the continuous hydration of cement and the resulting continuous gain in strength. If curing stops, the gain in strength also stops. Concrete must be kept moist during curing to achieve optimal strength and durability. Over 90% of a mix's final strength is typically achieved within four weeks, with the remaining 10% achieved over years. Inadequate curing can lead to plastic shrinkage cracking in the initial stage of evaporation and drying shrinkage cracking at the final setting stage. Adequate curing is essential for concrete to achieve its required structural and durability properties, making it one of the most important requirements for optimal concrete performance.
© 2023, IRJET
|
Impact Factor value: 8.226
|
ISO 9001:2008 Certified Journal
|
Page 878