Concrete Water Research Articles

К вопросу повышения водообеспеченности Верхне-кубанской оросительной системы Краснодарского края

The efficiency of the use of irrigated lands and the receipt of project yields of agricultural crops is associated with the technical condition of the GTS of the reclamation complex, which ensures the management of flood runoff and water intake for irrigation, which, according to various expert estimates, is characterized as satisfactory and unsatisfactory for most structures. The purpose of the study was to develop measures to improve the water supply of the Upper Kuban irrigation system of the Krasnodar Territory by reconstructing the hydroelectric complex on the Novokuban Canal. The analysis of long-term data on the runoff of the river. Kuban and carried out survey and topographic surveys of the Novokuban canal hydroelectric complex. According to the results of the study, it was noted that in 2022, with an annual plan for the supply of water to consumers of 12.12 million cub. meters, the actual water withdrawal amounted to 5.87 million cub. meters, of which 5.28 million cub. meters were used for irrigation, and out of 8.32 thousand hectares of irrigated land, only 3.31 thousand hectares were irrigated. It has been established that the gates of the water control facility are out of order, due to which the canal incurs unproductive expenses during floods, and an emergency discharge creates backwater in the canal bed, which creates emergency situations. An action plan has been developed for the reconstruction of the hydroelectric complex, including the construction of a reinforced concrete water intake with the installation of sluice-regulators with flat gates on the main channel of the canal and the discharge channel with the replacement of culverts. These repair and restoration works will improve the safety of the operation of the Novokuban Canal and the water supply of the Upper Kuban irrigation system, the involvement of existing and the introduction of new irrigated lands, and the expansion of the sowing structure of highly profitable agricultural crops that are responsive to irrigation.

Effects of Higher Sloshing Modes on the Response of Rectangular Concrete Water Storage Tanks with Different Aspect Ratios to Near-Field Earthquakes

Near-field earthquakes have been shown to have different effects on structures than far-field events. This study examines the dynamic response of a rectangular concrete liquid storage tank with tapered walls to near-field ground motions, with particular emphasis on the effect of higher sloshing modes. The tank’s numerical modeling, calibrated using experimental results, was performed considering the tank’s wall flexibility. Seven selected near-field records were applied in each case, and the effects of the first five sloshing modes on the tank response at three different locations, including the corner, middle of the long wall, and middle of the short wall, were investigated. The effect of the earthquake incident angle on the tank’s response was also studied by applying major and minor horizontal earthquake components once along the longer and shorter tank walls, respectively, and vice versa. Results show that the tank corner may have a sloshing height up to 50% greater than the middle of the walls and that the maximum sloshing response is substantially influenced by the spectral acceleration value at the first sloshing period. Higher sloshing modes are found to affect the sloshing response, with a maximum R2 score of 0.95, depending on the excitation’s incidence angle.

Performance of graphene oxide as a water-repellent coating nanomaterial to extend the service life of concrete structures

Surface treatments help to protect the built heritage against damage (environmental, accidental, etc.), reducing repair and restitution costs and increasing the useful life of building materials. The use of nanomaterials is currently the most important field of research in surface treatment technology for the preservation of building materials and, more specifically, to improve their durability and prevent their deterioration, extending their useful life. This paper studies the influence of a graphene oxide (GO) suspension as a surface treatment on the properties of concrete. The results indicate that, at best, surface treatment with GO can decrease both the water absorption and capillary absorption of concrete by about 15 %. The increase in the amount of GO deposited as a surface treatment leads to a further reduction in concrete water absorption. It is shown that, at best, GO coating also reduces water penetration at low and high pressures by approximately 20 % and 60 %, respectively. In addition, scanning electron microscopy analysis shows that GO surface treatment facilitates the hydration process and densifies the concrete microstructure. A simple aqueous suspension of GO is revealed as a tool with a high potential to protect concrete surfaces in a fast and cost-effective way, thanks to the easy application by spraying and the small amount of material needed to obtain great results.

Failure Prevention in Large-Diameter Water Pipelines Using Reliability-Centered Maintenance

The consequences of failures from large-diameter water pipelines can be severe. Results can include significant property damage, adjacent damage to infrastructure such as roads and bridges resulting in transportation delays or shutdowns, adjacent structural damage to buildings resulting in loss of business, service disruption to a significant number of customers, loss of water, costly emergency repairs, and even loss of life. The Washington Suburban Sanitary Commission (WSSC) in the United States found that flooding was the greatest concern due to its potential duration, the potential for broad geographic impact, and its role in crater creation. Public safety, property damage, social and economic consequences, and loss of water service and for how long is also of paramount concern. The American Water Works Association’s (AWWA) 2020 “State of the Water Industry” report states that the top issue facing the water industry since 2016 is aging infrastructure, with the second being financing for improvements. The industry needs to find novel ways of extending asset life and reducing maintenance expenditures. While there are many different assets that comprise the water/wastewater industry, pipelines are a major component and are often neglected because they are typically buried. Reliability-Centered Maintenance (RCM) is a process used to determine the most effective maintenance strategy for an asset, with the ultimate goal being to establish the required function of the asset considering the required reliability and availability at the lowest cost. The RCM philosophy considers Preventive Maintenance, Predictive Maintenance, Condition Based Monitoring, Reactive Maintenance, and Proactive Maintenance techniques in an integrated manner to increase the probability an asset will perform its designed function throughout its design life with minimal maintenance. RCM requires maintenance decisions be based on maintenance requirements supported by sound technical and economic justification. However, one industry where principles of RCM are in its infancy is the water/wastewater industry. This paper provides a case example and numeric modeling for use in RCM analyses for developing maintenance strategies for large-diameter water pipelines, particularly prestressed concrete pipelines, and proposes an approach for determining the most effective and efficient maintenance activities for large-diameter prestressed concrete water pipelines. The case study discussed in this paper analyzed wire breaks over time to predict when certain thresholds would be reached. The intent of this study is to predict when a specified threshold will be reached. From the RCM, a threshold was set to begin planning, budgeting, and scheduling maintenance activities when 55% of the wires in a frame or two adjoining frames are distressed or when 65% of the wires in non-adjacent frames are distressed. The results from the numeric model predict the 55% threshold may be reached in August 2025 for the most distressed pipe segment.

Experimental investigation on properties of concrete with rice husk ash and water hyacinth ash

The purpose of this experimental investigation is to study the properties of concrete with Ricehusk ash (RHA) and Water hyacintha ash (WHA) when used as a partial replacement for cement. Ricehusk ash is a by- product of thermally treating rice husks. It is highly pozzolanic and has been used as a partial replacement for cement in concrete production and Water hyacinth grows vigorously in ponds and doubles the quantity within two weeks. The studies have been done to evaluate water hyacinth ash in the replacement of cement. This study seeks to determine the effect of RHA and WHA on the strength and other properties of concrete. To conduct this investigation, a series of concrete mixtures were prepared with various percentages of RHA (5%, 10%, 15%, and 20%) for finding the optimum percentage. To the optimum concrete made with rice husk ash different percentage of cement is replaced with water hyacinth ash (5%,10%,15%,20%) and the optimum is obtained. The mix proportions were determined according to the standards. The mixtures were then tested to determine the compressive strength and flexural strength of the concrete. The results of the investigation showed that the replacement of cement by RHA enhanced the strength properties of concrete in 15% replacement of cement with RHA shows the maximum compressive strength value. The replacement of cement by WHA 10% with optimum RHA 15% enhanced the strength properties of concrete. Replacement of cement by 10% WHA with optimum RHA shows the maximum compressive and tensile value.

Experimental study on environment-friendly concrete production incorporating palm oil clinker and cockle shell powder as cement partial replacement

The demand for civil construction has increased recently; cement is now the most produced and consumed material globally. The carbon dioxide (CO2) emissions are strongly influenced by the cement industry which make up 5 to 7% total global emissions, are ejaculating at a rate of one ton of CO2 for every ton of cement produced. Consequently, additional cementitious substances like palm oil clinker powder (POCP), a by-product of palm oil mills and cockle shell powder (CSP), an agricultural and aquaculture byproduct derived from cockle shell combustion, can beemployed as partially binding materialto alleviate the ecologicalfootprint of cement manufacturing. By substituting cement in different weight ratios ranging from 0 to 20%, this study examines the impacts of POCP and CSP on concrete. Concrete compressive strength, flexural strength and water absorption of varying POCP and CSP proportions for 7 and 28 days of curing are analyzed in the experimental investigation. Thisresearch demonstrated that samples with 10% cement substitution, comprising 5% POCP and 5% CSP, performed well in terms of mechanical aspects and water absorption. The study of concrete structures with POCP and CSP is a novel and important scientific topic, according to the research findings, and it should be emphasized.

A comprehensive review of nano materials in geopolymer concrete: Impact on properties and performance

Geopolymerization in concrete production is a sustainable approach that utilizes industrial waste materials in conjunction with alkaline activators, such as sodium hydroxide and sodium silicate. Geopolymer concrete (GPC) has emerged as an environmentally friendly alternative, addressing the pressing concern of CO2 emissions associated with conventional cement manufacturing. However, GPC often exhibits suboptimal ambient-cured strength, necessitating the incorporation of nanomaterials to enhance its mechanical properties. This study delves into the investigation of diverse nanomaterial ratios and their profound impact on GPC properties. The research explores the application of engineering-favored additives, including nano-silica, aluminum oxide, titanium oxide, graphene, and carbon nanotubes, to bolster GPC attributes on a global scale. Notably, nanomaterial-modified GPC surpasses the strength of conventionally heat-cured GPC. In-depth microstructural and X-ray diffraction (XRD) analyses shed light on the intricate nature of nanomaterial-infused GPC, offering a comprehensive understanding of this pioneering composite. This paper serves as an extensive analysis of nanomaterial integration in GPC, unraveling its effects on the material’s characteristics and presenting valuable insights for future application. Incorporating nanomaterials in GPC yields impressive strength gains even under ambient curing conditions, overcoming the limitations of heat curing. Nano material infusion leads to improved concrete densification, reducing sorptivity and water absorption (%) of GPC. Durability against acidic conditions is enhanced by approximately 2–2.5% after the incorporation of nanomaterials in GPC.

Potential of Gypsum Waste as a Substitution and Filler Material in Concrete Manufacturing

Gypsum is a dental and construction material that used only at certain times. Gypsum waste can be mixed with food waste so that it endangers the environment. The gypsum waste needs to be separated and recycled. This study examines the potential use of gypsum waste as substitute and filler material in concrete manufacture, including: gypsum characteristic based on XRF, concrete maximum load, concrete compressive strength, concrete water absorption and heavy metal concentration analysis. Gypsum compositions used is 0%, 10%, 20%, 30%, 40% and 50%. The gypsum characterization results showed that there was 98.92% oxide, gypsum was included in type III gypsum, heavy metals such as: Fe = 10 ppm and Al = 16500 ppm, metallic elements such as: Si = 1950 ppm, Ca = 182900 ppm, Mg = 4560 ppm, K = 2200 ppm, and non-metallic elements namely: P = 580 ppm. The highest and lowest of maximum load and concrete compressive strength in the gypsum use as substitute and filler material are produced at the addition of 50% and 10% gypsum, respectively. The gypsum addition as substitute or filler material reduces the concrete water percentage. The heavy metals concentrations resulting from the 28-day-old concrete immersion were: Fe = <0.084 ppm and Al = <0.156 ppm.

Effect of Water Magnetization Technique on the Properties of Metakaolin-Based Sustainable Concrete

Using metakaolin (MK) in concrete with magnetized water (MW) has a high possibility to enhance concrete suitability. In this study, the effect of using MK and MW on concrete characteristics was studied through testing twelve concrete mixes. Seven ratios of MK were used in this study, namely 0%, 5%, 10%, and 20%, as an alternative to cement and +5%, +10%, and +20% as a cement additive. In addition, five water magnetization methods were applied on MK concrete. In the first stage of this study, the impact of different MK ratios on the workability of concrete, compressive strength, flexural strength, and tensile strength was studied using traditional tap water (TW) as the concrete mixing water. In the second stage, the best mix (best MK ratio) from the first stage was chosen to study the effect of the water magnetization method on concrete properties and to determine the best method for water magnetization. Scanning electronic microscope (SEM) analysis was also carried out on selected mixes to closely investigate the effect of MK and MW on concrete microstructure. The results showed that the best ratio of MK in concrete was +10% (MK as a 10% cement addition), and the best water magnetization method was to pass the water through 1.6 tesla then through 1.4 tesla magnetic fields. The SEM analysis confirmed the absence of pores after using MW instead of regular TW by increasing the calcium silicate hydrate (CSH) gel and reducing calcium hydroxide (CH). Using MK and MW enhanced the compressive strength by up to 33%, 32%, and 27% at 7, 28, and 365 days, respectively, and MW enhanced the workability by up to 3% compared to that of the control mix.

Reusing Ceramic Waste as a Fine Aggregate and Supplemental Cementitious Material in the Manufacture of Sustainable Concrete

A viable strategy for promoting sustainable development and a cleaner environment is the reuse of demolition-related ceramic waste and ceramic manufacturing byproducts in the production of concrete. The purpose of this study is to assess the possibilities for using ceramic waste in the production of concrete as a fine aggregate and cementitious material. The effectiveness of concrete mixtures incorporating 20–100% ceramic waste fine (CWF) as a replacement for natural fine aggregate and 10–30% ceramic waste powder (CWP) in place of cement was evaluated. Their influence was assessed with respect to workability, mechanical performance, durability, and elevated temperature resistance. The results were analyzed via energy dispersive x-ray (EDX) and scanning electron microscopy (SEM). The findings illustrated that the increase in the replacement levels of CWP and CWF decreases the concrete workability. The mechanical performance of concrete mixtures is enhanced under compression and flexural tests as the replacement ratios of CWF and CWP increase up to 50% and 10% as replacements of sand and cement, respectively. The increases in compressive and flexural strength were 5.33% and 8.14%, respectively, at age 28 days. The concrete water permeability significantly increases as the CWF replacement ratio increases, and the incorporation of CWP reduces this negative impact. After exposure to 200, 400, 600, and 800 °C, the residual compressive strengths of concrete mixtures incorporating CWF and CWP were up to 95.02%, 89.66%, 74.33%, and 51.34%, respectively, compared to control mixtures, which achieved 84.25%, 76.03%, 59.36%, and 35.84% of their initial strength. Microstructure analysis revealed that combining CWP and CWF significantly improves cement hydration when compared to the reference mixture. Thus, the use of CWF and CWP in the production of masonry mortar might be an economical alternative that would aid in raising the recycling rate of demolition and construction debris and supporting sustainable growth in the building sector.

Non-potable water for sustainable concrete: strength compliance in India for varying pH of mixing water and future scope

Non-potable water for sustainable concrete: strength compliance in India for varying pH of mixing water and future scope

The effect of cement replacement with metakaolin and sugarcane bagasse ash as supplementary cementitious materials on the properties of concrete

The use of supplementary cementitious materials in the cement and construction industry is growing rapidly owing to the numerous benefits the application of these materials offers. In this study, the effects of metakaolin (MK) and sugarcane bagasse ash (SCBA) used to partially replace cement on concrete are investigated. The experimental plan was designed using a constant 5% MK and 0-20% SCBA contents by weight. The mix design of 1:2:3 and water-binder (w/b) ratio of 0.5 was employed. Samples prepared were tested at the ages of 7, 14, 28, and 60 days respectively. Concrete workability, water absorption, and densities all showed a decrease with an increase in the percentage of SCBA. The compressive strengths at lower percentages of SCBA (5% and 10%) recorded higher values compared to that of 5% MK and 0% SCBA. An increase in the percentage of SCBA above 10% however led to a decrease in compressive strength. The maximum compressive strength of 22.17N/mm2 was obtained at 60 days in concrete containing 5% MK and 10% SCBA. Both the T-statistics and F-statistics values calculated were statistically significant and exceeded their critical values. This suggests that there is a good relationship between the compressive strength of SCBA and the curing period and that the variation in the curing period and SCBA also causes a variation in the concrete compressive strength. From the results obtained, it is concluded that 5% MK and 10% SCBA can be applied to replace cement for structural concrete production.

Production of Concrete Using Contaminated Water and Its Effects on Compressive Strength of Concrete

In saline environment and places where there is no access to clean water for concrete work, contaminated water is often used for mixing and preparation of concrete for different structural members of buildings and this practice is in complete violation of most approved standard codes for concrete production. This study is aimed at determining effects of the use of salt contaminated water on compressive strength of concrete with a view to providing mitigating measures. 150 mm cube samples were cast with these water samples. Compressive strength test was carried out on the cubes. Findings revealed that for potable water, the initial strength was retarded in the first 7 days, uniformly progresses through 14 days, 21 days until the 28 days. In the case of contamination of 1000 mg/litre, concrete strength follows the same trend as the control. As the quantity of contaminated salt increases after this stage, the compressive strength generally decreases. It was further observed that the contamination effects were not pronounced on the strength within the first 7 days. According to the 28 day compressive strength ranged from 23.26 to 15.78 N/mm2 as the concentration of contaminant (NaCl) in concrete mixing water ranged from 0 to 5000 mg/l. The study therefore concludes that the salt contaminated water have adverse effect on the properties of concrete. The use of salt contaminated water for concrete mixing is seen to favorable for strength development only at 4000 and 5000 mg dosages at early ages and reduction in long term strength.

CEBs with GRC: Fabrication, characterization, modeling, and correlation with microstructural fracture features

In this study, earth blocks (EB) and compressed earth blocks (CEB) are fabricated and investigated along with the development of a mathematical model of compressive and tensile loads. The investigated specimens are manufactured from a mixture of soil, ground recycled concrete (GRC) powder and water in weight fractions of 4:1:1. EBs are molded and CEBs are obtained by quasi-static compression in wet state. Material samples extracted from the blocks are tested in dry state for compressive strength and three-point flexural strength according to ASTM standards. The results indicate that CEB exhibits 130% higher compressive load capacity and 63% higher tensile strength compared to EB. Furthermore, the proposed and calibrated mathematical model is able to adequately describe the strength and damage behavior of both materials. Finally, microstructural/micromechanical interrelationships with the modeled material response are established based on a characterization of postmortem CEB samples using EDS elemental analysis and SEM micrographs techniques.

Effect of magnetic treatment of mixing water on the behavior of cement-based materials: A review

Abstract Magnetic treatment technology for concrete mixing water is a cost-effective and environmentally friendly approach that can enhance the performance and durability of cement-based materials. This technology aligns with the principles of sustainable development. In their studies, researchers have utilized static magnetic fields (SMF) of varying intensities to treat regular water and produce magnetically treated mixing water (MTMW) for a specific duration. Various research laboratories have successfully employed MTMW in the production of cement-based materials such as cement paste, mortar, ordinary concrete, foam concrete, self-compacting concrete, and rubber concrete. The main objective of this investigation is to review previous research that evaluated the impact of MTMW produced using different methods on the fresh, hardened, durability, and microstructure properties of cement-based materials. Most studies revealed that magnetic treatment technology improves physical and chemical properties of regular water, including solubility, surface tension, and conductivity. Regarding cement-based materials produced with MTMW, most investigations have demonstrated a significant enhancement in mechanical strength, durability, and microstructure. However, it seems that some researchers may have exaggerated their findings regarding the effect of MTMW on mechanical properties. Consequently, further research is needed to validate these results. I recommend considering the utilization of the MTMW technique for all cement-based materials to enhance their mechanical strength and durability performance.

Utilizing Crushed Waste Glass as a Sustainable Replacement for Fine Aggregate in Concrete

Concrete, a vital material in modern construction, combines strength, durability, and fire resistance. However, the conventional use of river sand in concrete is ecologically concerning due to its scarcity and environmental impact. To address this, waste glass is explored as a sustainable replacement for fine aggregate. This study investigates the effects of crushed waste glass on concrete workability, water absorption, compressive strength, and flexural strength. Different glass replacement levels (0%, 10%, 20%, and 30%) and curing periods were considered. The research aims to optimize glass content, evaluate its impact on concrete properties, and compare its environmental effects with traditional methods. The results indicate that waste glass improves workability and reduces water absorption. Compressive and flexural strengths initially increase with glass content but decrease at higher levels, due to potential alkali-silica reaction. The study concludes that waste glass can be effectively utilized in concrete to enhance sustainability and resource conservation. Further research is recommended to explore specific applications and long-term effects.

Improving the engineering properties of sustainable recycled aggregate concrete modified with metakaolin

This study investigates the potential of metakaolin as a mineral admixture to enhance the performance of concrete mixtures with varying proportions of recycled aggregates (RA). Sixteen distinct concrete combinations were formulated by substituting natural aggregates (NA) with RA at 0 %, 50 %, 75 %, and 100 % and incorporating metakaolin at 0 %, 5 %, 10 %, and 15 % as a replacement for cement. Experimental investigations were conducted to evaluate the effects of metakaolin (as a cement replacement) and RA (as a replacement for NA) on key concrete characteristics, including density, water absorption, compressive and tensile strength, and acid resistance. The results revealed that an increase in RA reduced mechanical properties, such as compressive strength, tensile strength, and dry density. Additionally, RA-based concrete mixtures exhibited higher water absorption and void volume than those with natural aggregates. However, including metakaolin in RA-based concrete significantly reduced the void volume and water absorption. The optimal proportion of metakaolin substitution was 15 %, resulting in the best overall performance for RA-based concrete mixtures. Notably, the highest compressive and splitting tensile strength (41.6 MPa and 4.3 MPa, respectively) were observed at 90 days in mixtures with 0 % RA and 15 % metakaolin. Similarly, the highest hardened density and lowest water absorption (2494.7 kg/m3 and 4.7 %, respectively) were recorded in samples with 0 % RA and 15 % metakaolin. Furthermore, concrete mixes containing 15 % metakaolin and 50 % RA demonstrated comparable qualities to conventional concrete, indicating that sustainable concrete can be produced by utilizing a significant quantity of waste concrete (15 % metakaolin and 50 % RA) without compromising strength criteria. This study sheds light on the potential of incorporating metakaolin and recycled aggregates as environmentally friendly alternatives in the construction industry, contributing to sustainable and eco-conscious practices.

Utilization of Ethylene-Vinyl Acetate (EVA) Waste from Footwear Industry as Partial Replacement of Aggregates for Concrete Roof Tile

Scraps of Ethylene-Vinyl Acetate (EVA) foams from cutting out shoe soles are a waste produced by the footwear industry, and the recycling of these thermosetting materials is quite expensive and requires distinct procedures. Hence, an upcycling route to turn such waste into valuable material, such as utilizing it as a partial aggregate replacement in the production of concrete roof tile, was explored. This paper aims to investigate the effects of EVA on the bulk density, water absorption, thermal properties, water permeability, and transverse breaking strength of the concrete roof tile. The weight percentages of replaced natural aggregates in the concrete roof tile mixture are 5%, 7.5%, and 10%. The concrete roof tile with EVA aggregates demonstrated a lighter weight but higher water absorption. Also, its thermal conductivity presents promising results as it lessens the heat transfer compared to conventional concrete roof tiles. Moreover, the incorporation of EVA also positively affects the concrete roof tile's water permeability as it can hold the water longer than those without EVA. Finally, the transverse breaking strength of the concrete roof tiles with EVA contents resulted little or no difference compared to the conventional concrete roof tile.

INCORPORATING OF WASTE FROM SUGAR INDUSTRY AND CEMENT INDUSTRY IN CONCRETE

<p>As the production of biomass waste from agroindustry grows across the world, a large amount of agro-based ashes ends up in polluting land. India produced 405.4 million tones of sugarcane in 2019, with a capacity of 105.4 million tonnes of bagasse and 2.5 million tonnes of SBA. The utilization of such ashes as SCMs contributes to a fixing of issues related to CO2 emissions from cement industry and land pollution in agro-based industry. Although many research has been performed on the utilization of Sugarcane Bagasse Ash (SBA) and limestone in concrete, research on their combined usage in the concrete is limited. As a result, the current work involves the performance evaluation of a ternary blended concrete incorporating SBA and limestone. The blended concrete's workability properties, compressive strength, water absorption, RCPT, Sorptivity, water permeability and electrical resistivity are examined in this paper. It was observed that a minimum of 10-15% limestone along with 10% SBA was adequate to increase the concrete performance, however exceeding 15 percent had a detrimental impact on concrete properties. In summary, utilization of SBA and limestone powder reduces cement consumption, reduce environmental impact due to SBA and cement, improves the economy, and increases the sustainability of concrete production. It improves the compressive strength and durability properties of ternary blended concrete.</p>

Correlation of Accelerated Corrosion and Real Reinforced Concrete Water Structures

The service life of reinforced concrete constitutes the initiation and propagation period. Accelerated corrosion tests are carried out to obtain results in modelling the Service life of reinforced concrete structures. Its erroneous to undertake a direct linear extrapolation of accelerated test results to real structures in predicting their service life. This research examines the relationship between the result from accelerated corrosion and real reinforced concrete water structures. The physical and chemical properties of the materials used in the study were investigated for compliance for use in reinforced concrete water structures. Concrete of three classes M25, M30 and M35 were used to cast accelerated corrosion test samples. For each class 9 concrete samples of diameter 100 mm,130 mm and 150mm respectively and 300mm long were prepared. A 10 mm diameter bar,400mm long was centrally inserted during casting. After curing the test samples were immersed in a 3.5% solution of sodium chloride solution under 6 V. The accelerated corrosion specimens were monitored for onset of cracks and stopped when the cracks were 0.2 mm in width. Using the accelerated corrosion and real reinforced concrete results, a parametric study of the propagation period was done and a model proposed. From the results the proposed and published propagation period model compares well. The result from accelerated corrosion and real reinforced concrete water structures lineally increase for the propagation period. The proposed model can be considered as an input parameter for the service life of actual reinforced concrete water structures and contribute to their optimum performance.