This research confirmed the feasibility of cheap limestone waste and soluble calcium ions generated by acetic acid as a calcium source, instead of calcium …

So far, many materials have been used as carrier for bacteria and medium used for their growth, including: expanded clay [23,24], limestone sand [25], perlite [26,27], activated carbon [28,29 ...

Feasibility of structural retrofit concrete pipelines using limestone calcined clay cement Engineered Cementitious Composites (LC3 ECC) ... (SF). Herein, LC3 was blended by OPC, MK, and LS at the ratio of 55:30:15 [14], [31]. F-75 grade silica sand was utilized as fine aggregates. To induce the multiple cracks of LC3 ECC, crumb rubber (CR ...

Semantic Scholar extracted view of "Feasibility of structural retrofit concrete pipelines using limestone calcined clay cement Engineered Cementitious Composites (LC3 ECC)" by He Zhu et al. ... Mechanical behavior of sustainable engineered cementitious composites with construction waste powder as binder and sand replacement.

Biocement production from microbially induced calcium carbonate precipitation (MICP) is an environmentally friendly approach for construction works, but the use of calcium chloride (CaCl2) in the conventional MICP process is a cost-limiting factor. The aim of this work is to develop a method for producing soluble calcium ions through two waste sources, …

In this investigation, coral sand is presented as a sustainable substitute for conventional river and machine-manufactured sand. This study comprehensively …

The objective of the study is to assess the feasibility of total replacement of natural rounded siliceous sand by crushed limestone sand to avoid the dependency of the …

Mechanical properties and hydration of ultra-high-performance seawater sea-sand concrete (UHPSSC) with limestone calcined clay cement (LC 3) Author links open overlay panel Junhui Wang, Yue Huang. ... Despite earlier studies focusing on the feasibility of solid waste as lightweight aggregates, the comprehensive evaluation of the …

The results demonstrate that pretreated SS-WFS exhibits promising potential as a substitute for 100% natural sand as a fine aggregate within the construction industry, while demonstrating comparable mechanical properties to those of natural sand mortar.

Mechanical properties and hydration of ultra-high-performance seawater sea-sand concrete (UHPSSC) with limestone calcined clay cement (LC3) May 2023 …

The crushed limestone sand is usually characterized by high porosity and water absorption. Accordingly, many studies have shown that the crushed limestone sand increases the water demand of mixes ...

The mix proportions of HVLCC-ECC (with 70% and 80% LCC by weight of binder) are listed in Table 3.Specifically, L stands for LCC blend; S stands for Sand; and W stands for Water in the Mix ID. Three water/binder ratios (0.30, 0.35 and 0.40) as well as two sand/binder ratios (0.2 and 0.4) were explored, and the content of super-plasticizers …

The feasibility of sifted desert sand as supplementary cementitious material is proved. ... [22]. When it was incorporated as SCM, it played a similar role as the inert admixtures like limestone powder, and the strengthening mechanisms can be summarized as micro-filling effect, nucleation effect, dilution effect, and weak chemical …

The dynamic mechanical properties, energy evolution characteristics, breakage modes, and damage mechanism of coral reef sand concrete (CRSC) are distinctly different from those of land-sourced aggregate concrete. Because structures made of CRSC may suffer damage due to earthquakes and artillery shells, it is significant to …

Feasibility of using ultrahigh-volume limestone-calcined clay blend to develop sustainable medium-strength Engineered Cementitious Composites (ECC) ... Effect of morphological parameters of natural sand on mechanical properties of engineered cementitious composites. Cement and Concrete Composites, Volume 100, …

The crushed limestone sand is an abundant material in Tunisia, which induces many environmental problems. ... The objective of the study is to assess the feasibility of total replacement of natural rounded siliceous sand by crushed limestone sand to avoid the dependency of the construction field on the quality and availability of this material ...

The feasibility of sifted desert sand as supplementary cementitious material is proved. ... Al 2 O 3, CaO, and MgO, compared to the original desert sand or limestone powders. The chemical effect can be clarified from the following aspects: (i) ... Mechanical properties of desert sand-based fiber reinforced concrete (DS-FRC) Appl. …

Locally available sand from Lawrencepur, Pakistan, was used in the study. The fineness modulus of sand was determined according to the ASTM C-136, and the calculated value was 2.018 with specific gravity of 2.65 having D 50 = 0.215 mm. Absorption capacity of sand was 2.4% as determined according to ASTM C-128.. 2.1.2.

The cement used in this study is Conch Brand Ordinary Portland Cement (OPC), the specific surface area of cement is about 325 m 2 /kg, the ignition loss is about 3.91%, and the initial setting time and final setting time are 183 min and 234 min respectively. The compressive strength and flexural strength at 3 days are 29.8 MPa …

Consequently, limestone calcined clay cement (LC 3), known for its partial replacement of cement at a typical level of 50 %, exhibits mechanical properties like ordinary Portland cement (OPC) at the 7-day mark. Additionally, the possibility of achieving an ultra-high substitution level (greater than 50 %) was also investigated.

This paper investigates the effect of limestone fines content in manufactured sand (MS) on compressive strength, chloride ion permeability and freeze–thaw resistance of both low- and high-strength concretes.The abrasion resistance of concretes and sulfate attack of mortars were also tested. The results show that for low …

The seven variant concrete mixtures were made by partially replacing marble powder (up to 15%) in place of sand; cement and amalgam were evaluated for the mechanical strength, ultrasonic velocity ...

In this research work, the mechanical properties of HSC blended with industrial wastes were assessed to evaluate the feasibility of incorporating industrial wastes into high-strength concrete. An attempt has been made to partially replace cement and fine aggregate in the concrete with fly ash and quarry dust, respectively, at different …

The escalating demand for natural resources within the construction industry is progressing upward. At the same time, however, there is a great concern regarding the depletion of these resources. This review paper emphasizes the significance of utilizing alternative aggregate materials in concrete. Particularly, it aims to explore replacing …

A new low-carbon UHPSSC with LC 3 was developed and reached 40% replacement of cement without long-term strength compromise.. 20% metakaolin with 10% limestone in LC 3 seemed to be the optimum substitution rate to achieve the best mechanical properties.. The workability of UHPSSC was reduced with the addition of …

Coral sand foundation formed by hydraulic fill often faces the problem of poor bearing capacity. This paper proposed for the first time to apply CFG pile composite foundation to coral sand sites to verify the feasibility of this scheme and understand its mechanical characteristics. Firstly, taking on-site coral sand as the research object, a …

Semantic Scholar extracted view of "The feasibility of utilizing sifted desert sand (<75 μm) as sustainable supplementary cementitious materials (SCM)" by Lyu Kai et al. ... Effects of Na2CO3 on engineering properties of cement–limestone powder–slag ternary blends. ... Fly-Ash evaluation and mechanical properties within high strength ...

To verify its feasibility, sandstone, syenite, marble, and basalt aggregates were selected to test the mechanical properties and road performance of the four aggregate concretes at 7, 28, 90, and ...