Analysis of strength properties of concrete containing sea sand …
— Sand is often utilized as a fine aggregate in concrete, contributing 22 to 62% of the total mass. The quantity and features of sand in concrete have an impact on its workability, mechanical characteristics, and durability. Effective replacements are needed as natural silica sand becomes scarcer. By incorporating these by-products into …
SEA SAND AS FINE AGGREGATE FOR CONCRETE …
Dr. Tran Tuan Hiep (Vietnam) Researching on using sea sand to produce cement concrete for road pavement construction The strength of cement concrete using sea sand is less than traditional cement concrete using …
Analysis of strength properties of concrete containing sea …
— According to the findings, concrete with a better substitution of fine aggregate utilizing sea sand and micro silica raises the strength of the concrete by 25%. Micro …
Fresh, hardened, durability and microstructure properties of …
— This study focuses on seawater concrete (SWC), an innovative and sustainable construction material with diverse applications. The paper provides a …
Sulfate resistance of eco-friendly and sulfate-resistant concrete …
— 1. Introduction. The resource shortage of freshwater and river sand is an urgent issue in infrastructure development. Excessive exploitation of river sand for construction has led to severe environmental concerns [1].By contrast, the exploitation of rich resources of seawater and sea-sand in coastal regions is restricted, due to excess …
Research on the performance of seawater sea-sand concrete…
— Seawater and sea sand concrete (SWSSC) refers to concrete prepared by replacing river sand and freshwater with sea sand and seawater. Sea sand has the advantages of low mud content, good grading, and excellent working performance, making it an ideal building material [6].As one of the earliest countries in the world to use sea …
Properties and Application of Concrete Made with Sea …
This paper describes the development of "concrete made with sea water and unwashed sea sand". A combination of sea water, unwashed sea sand, normal portland cement (OPC), …
Material and structural properties of recycled coarse …
— The current specifications for RAC in structural engineering primarily focus on the application of RAC prepared with RCA, with limited attention given to the use of recycled fine aggregate [9].The utilization of recycled fine aggregate is restricted due to its lower quality compared to river sand, resulting in decreased workability and mechanical …
Applicability and limitations of using seawater and sea sand in concrete
— The use of mineral admixtures also improves other concrete properties, such as strength, setting time, and porosity [26], [27] Therefore, if seawater and sea sand are to be used in developing eco-friendly concrete, it is recommended to add appropriate additives and admixtures for improved mechanical and durability properties.
Concrete Admixtures (Additives)- Types, …
Concrete additives are used to achieve desired workability in case of low water cement ratio, and to enhance setting time of concrete for long distance transportation of concrete. So, it is of much importance for a …
Non Slip Concrete Sealer
The final, critical, step for concrete is to apply a primer. 3M's installation instructions say to paint on the primer over a clean concrete surface. It can be used over sealed or painted surfaces. "Since concrete isn't smooth, the primer smoothes the surface and creates double the adhesion," said Dan with Martinson-Nicholls, a 3M distributor ...
Reza Hassanli
Sorptivity and mechanical properties of fiber-reinforced concrete made with seawater and dredged sea-sand D Vafaei, R Hassanli, X Ma, J Duan, Y Zhuge Construction and Building Materials 270, 121436, 2021
Influence of seawater and sea sand on the performance of …
— P.O. 42.5 R early-strength cement, sea sand, river sand, UWB-II AWA, freshwater, and seawater were used in this experiment. The gradation of river sand and sea sand is plotted in Fig. 1 (a), and the XRD (X-ray diffraction) patterns are shown in Fig. 1 (b).Sea sand had a smaller particle size compared to river sand, but there were no …
Development and mechanical behaviour of ultra-high …
— An experimental study is presented in this article to demonstrate the concept and feasibility of ultra-high-performance seawater sea-sand concrete: ultra-high-performance seawater sea-sand concrete samples with a 28-day cube compressive strength of over 180 MPa were successfully produced; the samples were made of …
Effects of Seawater and Sea-Sand on Concrete Properties: A …
Xiao J, Qiang C, Nanni A, Zhang K (2017) Use of sea-sand and seawater in concrete construction: Current status and future opportunities. Constr Build Mater 155:1101–1111 42. Yamazaki K (1974) Viewpoints on using sea sand in concrete as fine aggregates in Japan. Concr J 12(10):72–76 Effects of Seawater and Sea-Sand on Concrete Properties …
Preliminary investigation of artificial reef concrete with
— Mineral additives such as coal fly ash cement (FAC) and blast-furnace slag (BFS) do not clearly decrease the pH in the surface region, as surface pH after 5 months of aging are still >12 [4]. ... Therefore, when constructing oceanic island and reef foundations, this type of seawater sea-sand concrete is preferred due to its improved ductility ...
Seawater concrete: A critical review and future prospects
— The results indicate that the utilization of seawater and sea-sand in preparation of concrete is very promising with accelerated cement hydration, improved pore structure and durability only if ...
Investigation of the compressive strength of pit sand, and sea sand …
Adding 11.11%–22.22% rice husk ash enhances the compressive strength of the cement. Pit sand is far better than sea sand for compressive strength enhancement. The rice husk ash impact on compressive strength can be defected by the source of sand ... In order to prepare pit sand-cement mortar prisms with rice husk additives (Fig. 4), 50 g, 100 ...
A review on seawater sea-sand concrete: Mixture proportion, …
— Seawater sea-sand concrete (SSSC) refers to concrete prepared with seawater and/or sea-sand instead of freshwater and/or river-sand. It generally sets …
Properties of concrete containing recycled seashells as cement …
— Use of sea sand that contains seashells to replace fine aggregate: García et al. (2009) ... Inclusion of seashell ash powder as additive in OPC blended concrete has been reported to influence its workability negatively (Olivia and Oktaviani, 2017). However, the results show that the initial and final setting times increase with increase in the ...
Benefits of using sea sand and seawater in …
— The use of sea sand and seawater in concrete can provide sustainability to natural resources, while improving the mechanical …
Designing concrete for exposure to seawater
Designing concrete for exposure to seawater. Low permeability is critical. BY BRUCE A. SUPRENANT. Seawater causes both chemical and physical deterioration processes to …
Investigation of the effect of mineral additives on concrete …
— In addition to cement, sand, gravel, and water, the current investigation of the influence of additives on the compressive strength of concrete at 28 days includes fly ash, silica fume, and slag. 315 concrete compositions with various amounts of additives are trained and tested using an artificial neural network. Concrete strength is largely affected …
Experimental investigation of Strength and …
Microstructure properties of Sea water sea sand concrete Mrs. Ashwini R Pati1, Dr.Arun Kumar Dwivedi2 1(Research Scholar, Department of Civil, ... is the most widely used supplementary cementitious material Using fly ash as a concrete additive significantly not only adds specialized properties to concrete but can also help in the reduction of
Feasibility assessment and application of sea sand in concrete
— Sea sand concrete may potentially face the risk of alkali-aggregate reaction, but there is limited research on this topic. More in-depth studies are required to understand the potential risks and to propose corresponding prevention and control measures. ... When MK is used as a mineral additive, the cured concrete's compressive strength is ...
Strength, hydration, and microstructure of seawater sea-sand concrete …
— In this study, the effect of seawater and sea-sand on the properties of concrete made with two different kinds of cement were analyzed. Therefore, four kinds of concrete and four kinds of cement paste specimens were designed as shown in Table 2.The concrete specimens were prepared for compressive strength test, and the cement …
Use of sea-sand and seawater in concrete construction: …
— In the year of 2016, the amount of cement produced in the world reached 4.20 billion tonnes [1], and the estimated concrete production was around 25 billion tonnes.The production of aggregates (including both coarse and fine aggregates) reached about 40 billion tonnes in the year of 2014 [2].In particular, the consumption of concrete …
Sea Sand Concrete- A Review on Current Status
— The present paper provides comprehensive evaluation of utilization of sea sand in concrete and emphasises the need for further research on sea sand as fine aggregate in concrete. Key words: Sea ...
Application of sea sand for 3D concrete
— The paper shows the promising use of sea sand for additive technologies in construction. The use of sea sand reduces the setting time of the concrete mix and increases the initial strength ...
Investigation of the compressive strength of pit sand, and sea sand …
— Pit sand–cement, and sea sand-cement mortar prisms were separately prepared using cement-sand mix ratio 1:3, and RHA composition of 0–44.44%. The optimum strength of the pit sand-cement mortar prisms after 1, 2, 7, and 28 days was recorded at 11.11% RHA by the mass of the cement. However, the compressive …
Concrete Admixtures
The first step in optimizing concrete is to recognize that concrete is no longer simply cementitious materials, aggregates and water. It is a high performance material with not just four, but seven essentials – consisting of water, cementitious material, sand, gravel, chemical admixtures, additives and fiber reinforcement.
Investigation of the Compressive Strength of Pit …
— This study investigates the compressive strength of ordinary Portland cement mortar prisms with rice husk ash (RHA). Pit sand–cement, and sea sand-cement mortar prisms were separately prepared ...