Curing has a strong influence on the properties of hardened concrete. View self curing concrete slides ppts online, safely and virusfree. Internal curing of self compacting concrete using polyethylene glycol written by kunjir swapnali, vetal shailesh, desai tejaswini published on 20160330 download full article with reference data and citations. Experimental study on bioself cured marble powder based. Methods of curing concrete structures and their comparisons. Aci documents are available in print, by download, on cdrom, through electronic subscription, or reprint and may be obtained by contacting aci. Explore self compacting concrete with free download of seminar report and ppt in pdf and doc format.
Selfcuring or selfhealing coatings are considered to be smart material coatings that have the ability to sense cracks or damage caused by mechanical usage over the time. Selfcompacting concrete has been used in bridges and even on precast sections. An experimental investigation of self curing concrete norporat wt poly tyln lyol as s l urn a nt shikha tyagi m. Currently, there are two major methods available for internal curing of concrete. Self compacting concrete scc developed by professor hajime okamuraof kochi university of technology, japan, in1986 during his research, okamura found that the main cause of the poor durability performances of japanese concrete in structures was the inadequate compacting of the concrete in the casting operations. But nowadays more problems for water because water is falling in its quantity in environment, so in place of water there an urgent requirement to find substitute to make concrete and for construction works. The chemicals should have abilities to reduce evaporation from solution and to improve water retention in ordinary portland cement matrix.
Curing of concrete curing may be defined as the operation of maintaining humidity and temperature of freshly placed concrete during some definite period following placing,casting or finishing to assure satisfactory hydration of cement and proper hardening of the concrete if the curing is neglacted in early period of hydration, the quality of. Methods of curing concrete for different structures adding water to portland cement to form the watercement paste that holds concrete together starts a. Internal curing is often also referred as self curing. According to the invention, at least a layer of selfcuring agent is applied onto a concrete after placing. Shikha tyagi studied on selfcuring concrete and had use peg400 as a selfcuring agent in concrete. Pdf experimental study on the properties of selfcuring. Self curing or internal curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement and reduced self desiccation.
External self curing concrete is the one which can cure itself by retaining its moisture content within the concrete by the application of. Shikha tyagi studied on self curing concrete and had use peg400 as a self curing agent in concrete. For curing of concrete, we require large amount of water. Polyethylene glycol400 is used in this experiment as a self curing agent. Water retention and durability article pdf available in aej alexandria engineering journal 293 april 2015 with 3,157 reads how we measure reads. Self curing concrete is one of the special concretes in mitigating insufficient curing due to human negligence paucity of water in arid areas, inaccessibility of. In this study strength parameters of selfcompacting concrete, selfcuring concrete, selfcompacted self. Concrete basicsaddresses the needs of unskilled and semiskilled persons undertaking general concreting projects including home and handyman projects. Because scc is a viable solution to various concrete placement problems, astm has established subcommittee c09.
In this project, the scc was mixed onsite and pumped through a piping system to the specified point, located 200 meters away. It was found that peg 400 could help in self curing by giving strength on par. The characteristic of a self curing agent is to reduce the water evaporation from concrete, and therefore they grow the water retention capacity of concrete as compared to the conventionally cured concrete. Selfcuring concrete is achieved by means of replacing a part of aggregate by lightweight aggregate or adding chemical admixtures. The first method uses saturated porous lightweight aggregate lwa in. The european guidelines for self compacting concrete 1 introduction selfcompacting concrete scc is an innovative concrete that does not require vibration for placing and compaction.
The use of selfcuring admixtures may be very crucial from the point of view that saving of water is a necessity every day every one cubic. Selfcuring concrete is the best answer for desert area where the availability of water is very less or not. These agents retard the water loss from concrete, so that sufficient amount of water poured at the time of mixing of concrete is retarded and sufficient for curing of concrete in later stages. Curing is the maintenance of a satisfactory moisture content and temperature in concrete for a period of time immediately following placing and finishing so that the desired properties may develop fig. Higher cement content andor lower watercement ratio leads to more effective results of selfcuring agents in concrete. Self compacting concrete seminar report, ppt, pdf for. Student, structural engineering part time 202016, bharathidasan institute of technology anna university, tiruchirappalli, tamilnadu, india. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. A committee was formed to study the properties of selfcompacting concrete, including a fundamental investigation on workability of concrete, which was carried out by ozawa et al.
Curing is the maintenance of a satisfactory moisture content and temperature in concrete for a period of time immediately following placing and finishing so that the desired properties may develop. Slump flow test on self compacting concrete for workability. Physical properties of selfcuring concrete scuc article pdf available july 2014. Chemicals to achieve self curing some specific watersoluble chemicals added during the mixing can reduce water evaporation from and within the set concrete, making it self curing.
Introducing the selfcuring concrete in construction industry. Selfcuring concrete is one of the special concretes in mitigating insufficient curing due to human negligence paucity of water in arid areas, inaccessibility of. She added 12% of peg400 by weight of cement for m25 and m40 grade concrete. Selfhealing of concrete a new technology for a more. Guide for curing of portland cement concrete pavements, volume i publication no. One of the most remarkable projects built using selfcompacting concrete is the akashikaikyo suspension bridge. Presentation on self curing concrete concrete chemistry. Also explore the seminar topics paper on self compacting concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Experimental investigation on selfcuring selfcompacting.
Download as ppt, pdf, txt or read online from scribd. Most aci standards and committee reports are gathered together in the annually revised aci manual of. Figure 5 effect of selfcuring agent type on volumetric water. Selfcured concrete is a type of concrete with a special ability to reduce autogenous shrinkage responsible for earlystage cracking. Repair is initiated when microcapsules of resins contained in the coating rupture and react. Experimental study on strength characteristics of self. The selfcuring process of concrete takes place from inside to outside, thus reducing the autogenous shrinkage and selfdesiccation, especially for the highperformance concrete with relatively low waterbinder ratio. Selfcuring or internal curing is a technique that can be used to provide additional moisture in concrete for more effective hydration of cement and reduced selfdesiccation. In this research chemical curing agent is used to produce sc. Fhward02099 january 2005 research, development, and technology turnerfairbank highway research center 6300 georgetown pike mclean, va 221012296. If you are unable to download any of the topics mentioned below, you can mail to the admin to get the soft copy of the topic of your interest. A method for selfcuring concrete is provided to solve the problem that the degree of cement hydration is lowered due to the improper curing, and thus unsatisfactory properties of concrete.
Selfcuring concrete is one of the special concretes in mitigating insufficient curing. Incorporation of silica fume into concrete mixtures enhances all physical properties. Curing is defined as maintenance of a satisfactory moisture content and temperature in the concrete for a period of time immediately following placing and finishing so that the desired properties may develop. Concrete is an universal construction material and cement, water and aggregates are its. Concrete basicsaims to provide a clear, concise explanation of all aspects of making quality concrete. Effect of selfcuring agent type on compressive strength of concrete cured in air.
Selfcuring concrete is the way for solving the difficulty faced with curing. Curing is the most important phase for achieving strength. Selfcuring concrete sc is a concrete type that can be cured without using any external curing regimes. Conventional concrete, which is the mixture of cement, fine aggregate, coarse aggregate and water, needs curing to achieve strength. Introducing the selfcuring concrete in construction industry ijert. Pdf mechanical properties of concrete depend on the curing condition of concrete. The chemicals should have abilities to reduce evaporation from solution and to. There are two major methods available for internal curing of concrete. The need for adequate curing of concrete cannot be overemphasized.
M25 and m40 grade of concrete are adopted for investigation. The use of self curing admixtures may be very crucial from the point of view that saving of water is a necessity every day every one cubic. A selfcuring coating has the ability to repair damage by itself or with some outside stimulation. Potential materials cement of 53 grade fine aggregate. She was concluded that the optimum dosage of peg400 for maximum compressive strength was to be 1% for.
The selfcuring agent can absorb moisture from atmosphere and then release it into concrete. Any negligence in in curing will interfere in the strength and durability of concrete. Chemicals to achieve selfcuring some specific watersoluble chemicals added during the mixing can reduce water evaporation from and within the set concrete, making it selfcuring. Selfcompacting concrete applications and advantages. We know that cracks are a major problem in concrete. From several years researchers are finding the answer to this solution. Pdf internal curing of concrete by the use of presaturated lightweight. The characteristic of a selfcuring agent is to reduce the water evaporation from concrete, and therefore they grow the water retention capacity of concrete as compared to the conventionally cured concrete. Presentation on self curing concrete free download as powerpoint presentation. On the other hand, strength of silica fume and selfcuring concretes increased. Download latest collection of civil enigneering and construction seminar ppt,presentation for last semester diploma civil engineering students with free of cost. It decreases the life of the structure and reduces its stability against earthquakes. Pdf physical properties of selfcuring concrete scuc.
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