-
- دوشنبه تا شنبه: 10:00 - 16:00 / یکشنبه تعطیل است
As a partial substitute for river sand, the workability declines as the WFS content increases (Prabhu et al., 2014, Prasad et al., 2018). Few researches looked at the physical characteristics of concrete using clay-bonded WFS to see if river sand could be replaced in concrete (Kavitha et al., 2020, Prabhu et al., 2014, Siddique et al., 2015).
به خواندن ادامه دهید
The challenging issue of demand for sand in concrete can be addressed by exploring alternative materials. Mechanism sand [12], aeolian sand [13], waste foundry sand [14], construction demolition waste [15], industrial by-products (such as coal ash, aged clay tailings, copper tailings) [16], [17], [18], and sea sand [19] are among the …
به خواندن ادامه دهید
This research appraised the effects of recycling senilia senilis waste seashells as a full or partial substitution for natural coarse aggregate (granite) in eco-friendly concrete production. The design mix employed a 1:2:4 concrete mix ratio for M25 grade, a w/c ratio of 0.5, river sand as fine aggregate, ordinary Portland cement (OPC) as a binder, and …
به خواندن ادامه دهید
Natural river sand is one of the important constituent materials in concrete production while stone dust is a material obtained from crusher plants which is also sometimes being used either ...
به خواندن ادامه دهید
This chapter presents a study aimed at investigating the utilization of steel slag as a partial replacement of natural river sand as a fine aggregate in concrete production. It is difficult to produce iron in a blast furnace without first producing steel by-products,...
به خواندن ادامه دهید
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 …
به خواندن ادامه دهید
River sand has a spherical particle shape and a ... CA: 0.55) and water-to-cement ratio of 0.55 were adopted for the concrete production. During the course of the concrete production, the natural sand was replaced with 2.5, 5.0, 7.50, 10.0, and 12.5% of sawdust. ... Sawdust a waste material can be considered for partial substitute of …
به خواندن ادامه دهید
there is an acute shortage of river sand, which has been commonly used as fine aggregate in concrete and mortar. In view of such situation, the Construction Industry Council has …
به خواندن ادامه دهید
This study is to experiment the suitability to use beach/sea sand as a substitute for river sand as fine aggregate for concrete. Download Free PDF View PDF. ... the amount of cement produced in the world reached 4.20 billion tonnes and the estimated concrete production was around 25 billion tonnes. The production of aggregates (including both ...
به خواندن ادامه دهید
[4]. Relative to this, searching a source of new substitute of fine aggregate for concrete production, which can be replaced naturally or river sand is significant.
به خواندن ادامه دهید
ASSESSMENT OF M-SAND AS POTENTIAL SUBSTITUTE FOR NATURAL SAND IN CONCRETE Shivang Jayswal1, Mahesh Mungule2 ... natural river sand and manufactured sand of sabarkatha district - Gujarat is used. ...
به خواندن ادامه دهید
ABSTRACT We investigated the suitability of sea sand for concrete production. Our aim is to compare compressive strength, textural properties and salt contents with respect to grade 30 concrete ...
به خواندن ادامه دهید
The paper presents results of study on concrete using quarry dust to replace sand at levels of 0%, 25%, and by weight. Design mixes were prepared to achieve concrete grades C25, C30, C35, C40 ...
به خواندن ادامه دهید
The natural river sand is the cheapest option due to the ease of acquisition and in a well-grade nature. However, excessive excavation of river sand creates a serious environmental problem in Asian countries such as China, Thailand and India. Thus, natural river sand substitutes have to be explored urgently.
به خواندن ادامه دهید
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 …
به خواندن ادامه دهید
products and local concrete production (Saritha, Haripriya, Harshini, & Reddy, 2018). Crushed and screened waste glass is a strong, reliable, and cost-effective substitute for sand in concrete. When processed right, crushed glass can mimic gravel or sand properties. For construction, glass needs crushing
به خواندن ادامه دهید
Workable, environmentally friendly, sustainable sand concrete was reviewed to replace river sand for concrete production. The river ecology and the biological balance will be preserved with the help of the carefully chosen sustainable sand. A systematic literature review (SLR) methodology was employed to extract the data. The …
به خواندن ادامه دهید
Forbiddance of use of river sand for concrete production to government projects: • General Specification for Building 2017 (Cl. 6.33) "Natural sand shall not be used in production of concrete unless otherwise agreed by the SO." • General Specification for Civil Engineering Works 2006 (Cl. 16.08(2))
به خواندن ادامه دهید
Magmatic and metamorphic rocks (with the exception of amphibolite) can be used as manufactured aggregates, replacing natural sand in concrete production. …
به خواندن ادامه دهید
2.1. Regulatory Framework for the Investigations. The production of concrete, the design and construction of concrete parts, the determination of properties and application rules in construction are regulated in the standard TCVN 7570:2006 "Aggregates for concrete and mortar—Specifications" [].The main requirements for …
به خواندن ادامه دهید
Concrete production consumes large amounts of fresh water and river sand [1]. However, ... The CPWS was used to partially substitute river sand and stone dust at 5, 10, 15 and 20% in sandcrete ...
به خواندن ادامه دهید
The increasing scarcity of natural sands has led to a growing preference for manufactured sand in the production of construction materials in response to sustainable development.However, existing research typically applies it to ordinary concrete, its application in advanced concrete still remains relatively limited to date.
به خواندن ادامه دهید
This result gives a clear picture that quarry dust can be utilized in concrete mixtures as a good substitute for natural river sand giving higher strength at 50% replacement. ... there is need to investigate an alternative material of the same quality which can replace river sand in concrete production. In the present study, experiments were ...
به خواندن ادامه دهید
The aggregate quality map offers a geological basis for future land use and facilitates the transition from production of river sand to crushed rock. According to national requirements for aggregates a set of different test methods has been defined and used to evaluate the suitable use of the sampled material.
به خواندن ادامه دهید
Cement production, a key component of concrete, accounts for 8% of worldwide carbon dioxide emissions. Moreover, sand mining, largely unregulated, poses severe threats to river and coastal ecosystems. According to a 2022 United Nations report, ... the Tour lab has created a type of graphene that could serve as a substitute for sand …
به خواندن ادامه دهید
The present study emphasizes the combined use of quarry waste ( substitute for river sand) and fly ash (0, 10, 20, 30 and 40% substitute for cement) for sustainable masonry block production.
به خواندن ادامه دهید
High quality concrete mixture can only be produced with a proper choice of fine sand with requisite fineness module. The natural river sand is the cheapest option due to the …
به خواندن ادامه دهید
Based on economic analysis and results of tests, river sand replaced with 20% CGF is recommended for use in the production of concrete for use in rigid pavement.
به خواندن ادامه دهید
Keywords: M-sand; ordinary portland cement; portland pozzolana cement; river sand; slag aggregate. DOI: 10.14359/51725981. Date: 9/1/2020. Abstract: This study investigates the feasibility of using induction furnace slag as a substitute for river sand/manufactured sand (M-sand) in the production of concrete.
به خواندن ادامه دهید
Semantic Scholar extracted view of "Review and exploration of river sand substitutes for concrete production in Asian countries" by C. Sing et al. Skip to search ... @inproceedings{Sing2012ReviewAE, title={Review and exploration of river sand substitutes for concrete production in Asian countries}, author={Chun-pong Sing and …
به خواندن ادامه دهید