Results also show that 15% replacement of fine aggregate by sea sand in air cured polymer concrete exhibited enhanced strength and durability properties; thus the produced concrete can be an
1 Introduction Due to the enormous consumption of concrete in construction industry more than 349 million tons of aggregate are consumed annually [1 2] Since it has become necessary to find alternative materials nowadays [3 4] the application of sea sand and coral sand in concrete preparation is a popular research topic [[5] [6] [7] [8]] Li et al [[9] [10]
Findings The results showed a reduction in compressive strength when 50 per cent of sea shells were used as an aggregate replacement for both sand and gravel compared to the control sample
available river sand is used as a fine aggregate for concrete Also locally available coarse aggregates of two grades are used in the concrete and 20 mm
Fine aggregates are essentially any natural sand particles won from the land through the mining process Fine aggregates consist of natural sand or any crushed stone particles that are ¼ or product is often referred to as 1/4 minus as it refers to the size or grading of this particular aggregate
Uniform coarse medium fine continuous gap groups are prepared with seawater and sea sand and ordinary concrete is prepared with freshwater and desalinated sea sand which is called ordinary concrete OC as shown in Table 3 In the experiments the initial alkali content of sea sand with different aggregate gradations was the same
Chandrakeerthy SRDeS Suitability of sea sand as a fine aggregate for concrete production Transactions Institution of Engineers Sri Lanka 1994 93 114
This paper developed a solution of sea sand as a sustainable ne aggregate for chloride ion controlling by electric eld force The desorption mechanism of chloride ions in sea sand under electrical eld force was discussed The results showed that the chloride ion desorption process in sea sand is mainly divided into chloride salt dissolution and ion
Alternatives are being researched and a few of them include industrial waste such as slag M−Sand and sea sand Despite the excessive salt content in sea water the UK s British Marine Aggregate Producers Association BMAPA [4] which contributes around per cent of the construction aggregates consumed in Britain; have successfully used marine sand
The global consumption of river sand as a fine aggregate in the production of concrete and mortar is very high Unfortunately in the last 20 years the obtainability of river sand is reducing and several countries have problems in supplying One option to solve the scarcity of river sand is to use sea sand in the construction field In the current paper an attempt has
Therefore the use of sea sand as fine aggregate to prepare geopolymer concrete is a potentially advantageous method [17] The physical properties of several geopolymers and associated compressive strength are summarized in Table 1 Table 1 Summary of Previous evaluations of fly ash and GGBS based geopolymers
The use of seashells as a fine aggregate by sand substitution in self compacting mortar SCM Author links open overlay panel Brahim Safi a The decrease was approximately 10% at SR of 20% A study was recently conducted by Nguyen et al to recycle sea shells as coarse aggregate for the manufacture of ordinary concrete [25] [26] [27
Results also show that 15% replacement of fine aggregate by sea sand in air cured polymer concrete exhibited enhanced strength and durability properties; thus the produced concrete can be an
Due to the scarcity of river sand which is commonly used as fine aggregate in the construction it is necessary to find an alternative for the river sand The main aspect of this project is to utilize the sea sand as fine aggregate in concrete for construction after the removal of chloride content from the sea sand Chloride content present in the sea sand affects the load carrying capacity of
The concrete mix M4 50% USS 50%QD is the optimum mix for complete replacement of river sand with both sea sand and quarry dust as fine aggregate b The 28 day compressive strength is maximum for the M6 mix 100% QD is ± MPa and lowest is for M2 mix 100% USS is ± MPa among all excluding control mix
The mechanical characteristics of geopolymer concrete made with sea sand as the fine aggregate were researched by Khoa et al [150] The geopolymer concrete reached a high compressive strength when 35 40% of alkaline fly ash was applied and the mechanical performance between geopolymer concrete prepared with sea sand or river sand was not
types mixed sea sand and river sand 1 1 compared to river sand and quarry dust Crushing strength vs grain size of the different fine aggregates Journal of Geological Society of Sri Lanka Vol
The increasing demand for river sand driven by infrastructure development poses environmental challenges The study aims to address the depletion of river sand by integrating sea sand as a fine aggregate in the production of Self Compacting Concrete SCC through a Systematic Literature Review Furthermore it includes an in depth bibliographic
On the other hand Manufactured Sand M−Sand offshore sand quarry dust and sea sand are identified as the common rock derived and sea based mineral alternatives for river sand replacement [4] [8] [11] [12] To reduce the demand for fine aggregate dredged marine sands can be used as an alternative for fine aggregate in the
High chloride ion concentration is the main obstacle to use sea sand as the fine aggregate for reinforced concrete structures The chloride ion on the surface of sea sand mainly exists in the form of sodium chloride with electric field migration characteristics This paper developed a solution of sea sand as a sustainable fine aggregate for chloride ion controlling by electric field
Due to the scarcity of river sand which is commonly used as fine aggregate in the construction it is necessary to find an alternative for the river sand The main aspect of this project is to utilize the sea sand as fine aggregate in concrete for construction after the removal of chloride content from the sea sand Chloride content present in the sea sand affects the load carrying capacity of
USING SEA SAND AS FINE AGGREGATE The sea sand can be used for replacement of fine aggregate in construction With proper washing the salt content of the sea sand can be reduced to 015% after washing as the level of salt content are reduced it does not pose a potential threat to the concrete structure The washing with fresh water or river
available river sand is used as a fine aggregate for concrete Also locally available coarse aggregates of two grades are used in the concrete and 20 mm
Fine aggregate commonly known as sand is an inert material widely used for construction works From concrete production to mortar asphalt and even t Sea Sand Derived from seashores sea sand may contain salt and other impurities It requires thorough washing before use in concrete due to the potential presence of chlorides which can