A mix design for normal strength (C-25) concrete that has a slump of 25–50 mm and a nominal maximum aggregate size of 19 mm was made using ACI 211.1 mix design procedure by utilizing steel slag sand as fine aggregate with 0%, 15%, 30%, and 45% of partial replacement for 386.96 kg/m 3 cement content.
Fine Aggregate: Usually sand or crushed stone, fine aggregate provides cohesion to the concrete mix and fills the spaces between coarse aggregate particles. • Coarse Aggregate: Typically crushed stone, gravel, or recycled concrete, coarse aggregate adds strength and stability to the concrete mixture. 4.1.3. Water
The experiments were conducted on M20 and M30 concrete grade with 450 specimens. Slump cone, compaction factor and vee-bee time tests were conducted to determine workability. Results obtained showed that as replacement of natural sand by manufactured sand is increased, there is a decrease in the workability.
For the productivity enhancement of the concrete mix made using sea sand and micro silica, the Multi-Taguchi Optimization Algorithm in the civil environment is employed. ... To substitute river sand, the concrete mix M4 (51% beach sand + 49% quarry powder) was discovered to be the best. It has a compressive durability t of 39.7 ± …
Concrete with walnut shells and Steel Slag (SS) as replacement of coarse aggregate and sand respectively reported that workability reduces when replacement is at 10% due to high water absorption property in steel as FA [6]. The increase in substitution of sand with Waste Foundry Sand (WFS) resulted in decreased slump.
Increasing th e r eplacement ratio of river sand in concrete mix-ture to more th an 25% and 35% for normal and high strength con-crete, respectivel y, leads to decrease in the mechanical properties .
Stone dust is a waste material obtained from crusher plants. It has potential to be used as partial replacement of natural river sand in concrete. Use of stone dust in concrete not only improve ...
Table 2 presents the cube compressive strength of concrete mixes containing 5%, 10%, 15%, 20% and 30% of coir pith as partial fine aggregate subjected to standard water curing and self-curing. From the results, it is clear that the conventional concrete mix achieved the required target strength at all days of curing. Concrete mixes containing …
ASSESSMENT OF M-SAND AS POTENTIAL SUBSTITUTE ... its results compared with the concrete manufactured by natural river sand of same grade. ... Concrete mix is designed as per IS 10262:20009 with ...
Due to the high costs of traditional concrete materials in Nigeria, such as river sand, there is an increasing demand to explore alternative materials like laterite for fine aggregates. Although ...
Manufactured sand (M Sand), offshore sand, sea sand, quarry dust, and demolition waste have been identified as the most common substitutions for river sand. …
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).
Quarry Dust Materials: Quarry dust has some potential as a fine aggregate substitute for river sand in the construction of concrete. It is essentially a by-product of stone crushers created during the coarse aggregate crushing and screening process. The compressive strength of the concrete is somewhat improved when quarry dust is used in place ...
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 ...
Manufactured sand (M-Sand) is a substitute of river sand for concrete construction . Manufactured sand is produced from hard granite stone by crushing. The crushed sand is of cubical shape with grounded edges, washed and graded to as a construction material. The size of manufactured sand (M-Sand) is less than 4.75mm. Why Manufactured …
The selected concrete mix proportions are shown in Table 5 based on the 28-day compressive strength: 40 MPa. The cement amount is reduced for . Conclusions. The current state-of-the-art applications of GF as sand replacement in sustainable concrete have been systematically reviewed in this paper based on recently published …
When compared to the concrete mix without any addition of WFS, the concrete mix containing 30 percent of WFS has a 9.1 percent lower flexure strength after 28 days of age. ... WFS can be used up to 30% substitution instead of natural river sand with no harmful influence on concrete strength. This is owing to the micro filling which …
It is a suitable type of material to substitute river-sand in the production of low-density concrete due to its low specific density, ranging from ... A slight decrease in water absorption was found in a concrete mix with 20 % of CS as sand replacement, as shown in Fig. 9. This was attributed to the low water absorption of CS (0.18–0.36 % ...
production. River Sand used as fine aggregate in concrete is derived from river banks. River sand has been the most popular choice for the fine aggregate component of concrete in the past, but overuse of the material has led to environmental concerns, the depleting of river sand deposits and an increase in the price of the material. The ...
River sand - 47.22 % 3.2 Grading curves Sieve analysis was done for all river sand and also for four river sand substitutes to check the suitability. As mentioned in the ASTM standards define specific limits (lower limit and upper limit) of fine aggregate for concrete works and also for mortars [5].
Use of CRT waste glass in combination with limestone powder as a substitute for natural river sand in concrete production would reduce concrete unit cost and freight charges in addition to ...
The results exhibits that 60-80%replacement of FeCr slag against normal river sand in cement concrete is the optimum substitution considering compressive strength. This shall add to safe disposal ...
Many researchers are finding different materials to replace sand and one of the major materials is quarry stone dust. Using different proportion of these quarry dust …
The river sand is a primary parameter in the concrete structure. This work replaces accessible locally accessible substitution materials like red soil and manufactured sand (M-Sand). In this paper, the mechanical properties and durability of concrete containing red soil and M-Sand have been studied. In this investigation, M30 grade …
No, you cannot make concrete without gravel. The ingredient mix of 1 part cement, 2 parts sand, and 3 parts gravel (stone) is what makes up concrete. Without gravel, concrete would not be strong or be able to be used as a foundation or base that could withstand heavy loads. This answer is a little simplistic, and there is a lot more to …
When 20 % waste glass was used in place of fine particles in the concrete mixture, the slump was at its highest possible level. 2. The compressive strength at replacement level 0 %, 5 %, 10 %, 15 % and 20 % of sand with glass powder were 36.82, 38.5, 40.95, 43.1 and 41.82 MPa for 28 days of curing.
Manufactured sand (M-Sand) is a substitute of river sand for concrete construction . Manufactured sand is produced from hard granite stone by crushing. The crushed sand …
The artificial sand produced by proper machines can be a better substitute to river sand. The sand must be of proper gradation (it should have particles from 150 microns to 4.75 mm in proper proportion). ... India's largest cement and ready-mix concrete (RMC) company, and Coolbrook, a transformational technology and engineering company, will ...
Its fine texture and natural color make it attractive and easy to work with. It can be used as backfill material or to fill gaps and cracks in various surfaces. River sand can also be used to build level foundations and fill …
ABSTRACT. Fine agg regates used in manufacturing concrete is sourced from natural river bed. which if not replenished causes environmental concerns. This …
alternative to river sand to produce concrete mix. These alternatives substituted river sand from 10% to 60% in the mix proportion of M25 grade concrete to obtain the optimum compressive strength.
By using WGP in a concrete mix, the amount of waste can be decremented in Earth landfills and the cost of cement production up to 18% can reduce by replacing cement and river sand. The replacement examination method in this experiment of using WGP and M-sand in concrete is said to be feasible based upon the overall outcome …