concrete. Journal of Agricultural Science and Eng ineering, 2(6): ... Results show that concrete with crushed sand requires an increase of superplasticizer to obtain the same slump. It also ...
The increasing demand for natural river sand supply for the use in construction industry along with the issue of environmental problem posed by the dumping of cockle shell, a by-product from cockle business have initiated research towards producing a more environmental friendly concrete. This research explores the potential …
Construction aggregates derived from primary resources either by crushing of sound rock masses (crushed stone aggregates) or from naturally occurring unbound clastic sediments (natural sand and gravel aggregates) make the most voluminous mineral raw material exploited by humans nowadays (Fookes 1991; Přikryl 2017).Extremely low …
The availability of sand in the growing demand of the construction industry will be a challenge due to a wide range of variability, cost, and, quality problems. This study aims to investigate normal strength concrete by …
Potential primary sand sources crushed and round river concrete quartz sand and m-sand substitutes in form of rushed solid rocks: marble, amphibolite, granodiorite (a form of granite), and basalt (Figure source: Radek Kucera).
This article examines the effect of total substitution of siliceous sand by crushed limestone sand in mortar and concrete with regard to durability.
The influences of fines content, methylene blue () value, and lithology of crushed sand (CS) on frost durability and strength of concrete were investigated, and …
In this research, concrete with a target characteristic strength of 32 MPa was produced by replacing natural river sand with 20%, 40%, and 60% of crushed recycled glass sand (RGS) to investigate the effect of replacement levels on fresh and hardened properties of concrete.
The paper presents an industrial case study where possibilities of removing the excess of fines from crushed sand are investigated in full-scale sand washing experiments. The results are in line with previously reported investigations on laboratory scale, and indicate that the used washing technique primarily reduced the amount of material in size …
The research findings revealed that the distinctive surface qualities of crushed sand facilitate the production of high-strength concrete exhibiting an impressive slump range of 18.5 to 22 cm. remarkably, concrete samples exhibited commendable compressive strengths ranging between 114 and 122 MPa and 138 to 150 MPa at the 7 …
Arabian Journal for Science and Engineering - Self-compacting concrete (SCC) is one of the most significant advances in concrete technology over the past two decades. ... Kumarasamy, K.: Feasibility study of utilizing unprocessed crushed sand as fine aggregate in concrete. In: National Conference on Advances in Materials and …
The fracture toughness of sand concrete is affected by aggregate characteristics. In order to study the possibility of exploiting tailings sand, available in large quantities in sand concrete, and find an approach to improve the toughness of sand concrete by selecting appropriate fine aggregate. Three distinct fine aggregates have …
The availability of natural sand for concrete production is facing challenges, while the so-called waste stockpiles at aggregate crushing areas are causing problems for producers.
The Compression test shows that 15% replacement of sea sand with crushed glass mixed concrete at 90 days has a value of 50.71 MPa which had the highest compressive strength, a value which is more ...
Integration of suitable crushed oyster shell as partial fine aggregate replacement enhances concrete strength. ... the utilization of oyster shell waste as cement and sand replacement in concrete research is reviewed in this paper. The paper presents the oyster shell's properties, processing method prior to its use and the …
This article describes an experimental study conducted on fresh mortars and concretes made with crushed sand. The aim of this research was to assess the effect of aggregate particle shape and surface texture as well as dust content on mortar and concrete rheology. The experimental programme also addressed the impact of angular …
Self Compacting Concrete (SCC) has had a remarkable impact on the concrete construction industry, especially the precast concrete industry. Crushed Rock Dust (CRD) and Marble Sludge Powder (MSP) are discarded in the nearby land and the natural fertility of the soil is spoiled. MSP and CRD can be used as filler and helps to …
This study presents the various properties of concrete with sand and its alternatives such as physical and mechanical characteristics of concrete. it is concluded that the highest substitute rate of sand replacement in concrete can help to resolve a variety of disposal-related difficulties, save the natural resources used in aggregate …
The main objective of this research is to investigate experimentally the effect of crushed and uncrushed coarse aggregate on the properties of hardened concrete …
This article examines the effect of total substitution of siliceous sand by crushed limestone sand in mortar and concrete with regard to durability. Crushed limestone sand is a by-product of quarries containing a significant amount of fines characterised by a 'spread out' grain size distribution having a maximum diameter of …
The crushed limestone sand is an abundant material in Tunisia, which induces many environmental problems. Indeed, available stocks of siliceous sand drastically decrease because of its massive use in hydraulic concrete.
Six representative parent rocks of sand, including limestone, quartzite, gneisses, granite, Basalt and Marble were selected to conduct a systematical research on the effects of various lithologies of manufactured sand on the workability, mechanism properties, volume stability and durability of manufactured-sand concrete. The …
Crushed stone sand has been identified as a potential substitute material for natural sand in making good quality concrete. The main objective of the present investigation is to determine an adequate mix design method and evaluate engineering properties of crushed limestone sand concrete mixtures in both the fresh and hardened sates.
The extreme exploitation of river sand in Mekong Delta region has seriously caused landslides sweeping away a large area, even affecting traffic movement on national highway. Thus, utilizing crushed-sand, a co-product in …
A review is presented in this paper about the application of crushed sand as a smart material in concrete. After a brief outline of the theoretical as well practical studies few measures are reviewed to replace natural sand with manufactured crushed sand.
Abstract In the context of sustainable development and environmental protection, the current study aims to give scientific evidence of the feasibility of replacing …
One of the solutions is to use crushed sand to replace natural sand as aggregate in concrete, especially the study of using crushed sand to make high-strength self-compacting concrete. Crushed sand is an aggregate of angular shape and surface roughness that hinders the self-compacting of the concrete mixtures.
The majority of studies on using crushed sand as an alternative for some sand of river in concrete focuses on concrete grades up to M40. However, there is a dearth of material on HPC using higher grade concrete. This study delves into the utilization of crushed aggregate to supplant river sand, building upon the groundwork …
The mono crushed sand could completely replace the mono river sand in making concrete, with notable improvements in the workability and mechanical properties of the concrete: workability (slump) increased by 22%, compressive strength by 11%, flexural.
Semantic Scholar extracted view of "Properties of Concrete Incorporating Natural and Crushed Stone Very Fine Sand" by Ahmed A. E. Kourd