Manufactured sand crushed from stone or gravel, also known as machine-made sand, artificial sand or crushed-stone sand, has been used as a substitute of natural sand in concrete [1], [2], [3]. This is also becoming a global trend to produce concrete by using manufactured sand in the safeguarding of limited natural sand resources [4], [5], …
To popularize the complete replacement of natural sand with manufactured sand, a study was performed to determine the effect of adding polypropylene fibres (PPFs) to increase the bending strength and carbonization resistance of manufactured sand concrete (MSC). A 2 × 3 factorial design with the cont …
roduction of concrete as an alternate to natural river sand or any other sand used for co. struction. Manufactured sand differs from natural sand in its physical and mineralogical properties. The physical ch. racteristic of M-Sand influences the workability, High concrete strength and durability of concrete. Even though the compressive strength ...
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 …
Semantic Scholar extracted view of "Mechanical Properties and Microstructure Characteristics of Manufactured-Sand Concrete Under Coupled Effect of Salt Erosion and Freeze-Thaw Cycles" by Zhengfa Chen et al.
Manufactured sand can be used as an economical alternative to river sand since natural sand has become a meager construction material and also highly pricey. The utilization of manufactured sand as building material has been accepted in the construction industry in recent years because of the scarcity of natural sand everywhere[1-2].
concrete by addition of manufactured sand as a complete replace ment of natural sand. Keywords : High performance concrete, Manufactured sand,Natural sand,Strength and Durability. INTRODUCTION ...
Influence of Stone Powder Content from Manufactured Sand Concrete on Shrinkage, Cracking, Compressive Strength, and Penetration. The market demand for manufactured sand has grown rapidly, and the solution to the problem of optimum stone powder content from manufactured sand concrete is imminent. The workability, early …
The present study focuses on evaluating the axial compression characteristics of concrete, in which Manufactured Sand (M-Sand) is used as a partial and full replacement for natural sand. To retain the natural resource such as natural sand an attempt is made in this paper by partially replacing the natural sand with M-Sand. The …
The particle shape parameters of natural sand and limestone manufactured sand were studied by the DIP method. The results showed that compared with the natural sand, the manufactured sand was more 19.0% in lengthwise ratio, less 11.5% in flatness ratio, more 0.3% in convexity ratio, more 0.2% in fulness ratio, less 19.3% in particle …
DOI: 10.1016/j.jobe.2023.106443 Corpus ID: 258160298; Comparison of nano-silica-modified manufactured-sand concrete under steam curing and standard curing @article{Liu2023ComparisonON, title={Comparison of nano-silica-modified manufactured-sand concrete under steam curing and standard curing}, author={Changjiang Liu and …
1. Introduction. As the most widely used civil engineering material in current projects, the long-term performance of concrete has been widely concerned [1].Concrete creep is the slow deformation of the material with increasing time under external load [2].For projects with a long design life and a large load, the creep of concrete has an important …
@article{Bardhan2024CompressiveSE, title={Compressive Strength Estimation of Manufactured Sand Concrete Using Hybrid ANN Paradigms Constructed with Meta-heuristic Algorithms}, author={Abidhan Bardhan and Sudeep Kumar and Avinash Kumar and Subodh Kumar Suman and Rahul Biswas}, journal={Iranian Journal …
To further push up the limit of concrete strength, i.e., beyond 80 MPa in practical wall construction and to figure out a possible alternative of river sand due to the sustainability and environmental friendly requirement, an innovative wall, namely ring-stirrup concrete-filled-steel-tube (CFST) composite wall with high-strength manufactured ...
@article{Han2022StudyOA, title={Study on axial compressive behavior and damage constitutive model of manufactured sand concrete based on fluidity optimization}, author={Zhao Han and Yunsheng Zhang and Hongxia Qiao and Qiong Feng and Cui Xue and Minggang Shang}, journal={Construction and Building Materials}, year={2022}, …
The stone powder content of manufactured sand is generally as high as 10–20%. Compared with natural sand, manufactured sand has the characteristics of irregular grain shape, unreasonable gradation, and high stone powder content (Wang et al. 2018; Zheng et al. 2021), which limits the popularization and application of …
The mix proportion of manufactured sand concrete (MSC) was designed based on a minimum paste theory, where microfines was added to replace part of cement. The effect of microfines content on the workability and mechanical properties of MSC was investigated. The study reveals that the microfines can be used as an ingredient of MSC …
influence on the performance of manufactured sand concrete is the fines content [13]. A certain amount of fines can effectively improve the workability of manufactured sand concrete [14,15]. At the same time, an appropriate amount of fines can improve the bonding of aggregate and cement, improve the packing of concrete and the mechanical ...
Here's your step-by-step guide on how to sand concrete in 8 simple steps! Step 1. Prepare the Area and Yourself. Before starting to sand concrete, it is essential to take a few steps to ensure the project goes smoothly. The first step is to prepare the area where the sanding will occur properly.
Similarly another Artificial material called Manufactured Sand (M-Sand) is also used as the fine aggregate against the normal river sand. Concrete beams of size 100 x 150 x 1000 mm were prepared ...
The complex particle shape, the higher content of stone powder and strong absorption effect on water reducer of manufactured sand will deteriorate the workability of concrete mixture [4], [11], especially the gradual loss of slump and the later strength [16].In order to alleviate this phenomenon, two groups of mix proportions were designed, …
of 450 to 500 mm (18 to 20 in.). During the pumping performance test of the manufactured. sand concrete, the SD content (by mass) of low-strength. concrete (LSC) manufactured sand is 5, 10, 15 ...
The rate of natural sand is double of manufactured sand. The concrete made with 60% replacement of natural sand by manufactured sand and partially replacing cement with silica fume and metakaolin have slightly higher cost as compared to conventional concrete but has stronger ecological and environmental impact. And …
1 Introduction. Durability is the main and serious concern for the concrete because it is highly susceptible to aggressive environment caused due to acid or sulphate attack. This has led to the failure of several concrete structures worldwide. Sulphate adversely affects the concrete durability.
The natural sand which excavated from river bed is used to produced conventional concrete. Depletion of natural sand cause the environmental problem and hence sand excavating is restricted by government which resulted in shortage and drastically increase in its cost. In order to fulfil the necessity of fine aggregates, an alternative material like M …
In contrast, the tuff-manufactured sand concrete has many closely arranged protruding points in the cement matrix. The roughness of the cement matrix area near the ITZ of the tuff-manufactured sand concrete is larger, mainly because the tuff-manufactured sand contains stone powder particles, which have a certain effect on …
Raw materials of MSC were the ordinary silicate cements, the admixture consisted of fly ash, slag and silica fume, the crushed stone and the manufactured sand. The cement' compressive strength and tensile strength at 28 days ranged in 35.5–63.4 MPa and 6.9–10.8 MPa, respectively. The maximum grain size of crushed stone ranged from …
Despite several studies focusing on producing sustainable concrete with nonconventional materials, there are short-term and long-term lapses in behavior of some of the concretes. This study, with a main focus on durability performance, explores strength and behavior of manufactured sand concrete containing alcofine and zinc oxide in …
The influences of natural sand, manufactured-sand (MS) and stone-dust (SD) in the manufactured-sand on workability, compressive strength, elastic modulus, drying shrinkage and creep properties of high-strength concrete (HSC) were tested and compared. ... The Effect of Stone Dust Content in Sand[J]. Cement and Concrete …
The first step in the production of manufactured sand is crushing the rock to a gradation that when classified, by only removing the excess material passing the #100 and #200 sieve, will meet the C-33 …
industry and reported that concrete blend with 35% TM as substitution to river sand and 20% fly ash as substitution OPC, exhibited higher durability characteristics by higher resistance to sulfate, acid and chloride attacks. The. use. of LF with appropriate amounts (100 to 130 kg/m3) in concrete )increases compactness and mechanical
This study investigated the effects of the replacement rate of manufactured sand and glass fibre dosage on the compressive strength, flexural strength, and shrinkage of concrete. The results show that the optimal replacement ratio of the manufactured sand and ideal glass fibre dosage ranged 60%–80 % and 0.2%–0.3 %, respectively.
1. Introduction. Ultra-High Performance Concrete (UHPC) is one of the most advanced cement-based construction material. It has outstanding mechanical and durability properties, such as compressive strength [2, 3], malleability [4, 5], impact resistance [6], chloride penetration resistance and freezing-thawing resistance [[7], [8], [9]], which has …
On the other hand, the Gaussian distribution function is used to fit the compressive strength change rate and carbon reduction rate of manufactured sand concrete under different stone powder replacement rate and fly ash replacement rate. The fitting accuracy can reach more than 93 %.
