No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The use of basalt fibres to improve the hardened properties of concrete has increased in recent times. The incorporation of these fibres into concrete results in a change in the hardened state of concrete. However, …
Hassaan (2001) used basaltic rocks instead of shales in cement industry and recorded that basalt is a typical raw material for cement industry with little addition of sand to adjust the silica ...
The strength of the concrete series based on basalt aggregate, BC1, allowed it to be classified as ultra-high-performance concrete. Concrete based on sand, SC1, was characterized by the lowest ...
According to the microstructural analyses, the presence of basalt powder in concrete mixes is beneficial for cement hydration products, and basalt powder substituted concretes have lower porosity ...
As depicted in Table 1, the liquid limit of silty sand is 22.4%, the plasticity index is 8%, the optimum water content is 8.5%, and the maximum dry density is 2.03 g/cm 3.According to the ...
All identified minerals have been previously reported in basalt powders applied as SCM in cement and concrete formulations (Hassaan, 2001; Labbaci et al., 2017; Laibao et al., 2013; Saraya, 2014), and indicate that BP may have a slightly pozzolanic activity throughout the hydration process so consuming cement portlandite and increasing the ...
In this study, the raw materials included cement, fly ash, water reducing agent, sand, steel fiber, and basalt fiber. The P•II 52.5R Portland cement with a specific surface area of 365.3 m 2 /kg was produced by Conch Co. Ltd., Anhui, China. The Class-F fly ash with a low calcium content was produced in Jiaxing, Zhejiang, China.
The mortar specimens used in this study were prepared in a mold with a diameter of 50 mm and a height of 25 mm. The mass ratio of water, cement, and fine sand was 0.54:1:1.96, and the apparent density of coral sand cement mortar was 2000 kg/m 3. The actual mass used was 1.2 times that of the calculated value considering the mass loss during the ...
The particle size distribution of cement and basalt powder are given in Fig. 1. In the third group, the mix was prepared by replacing 5, 10, 15 and 20% of the cement by basalt powder and the same percentages of fine aggregate by basalt sand (BPS). Including the control sample, thirteen different samples were prepared.
Basalt fibre in concrete is still an exploratory area due to limited studies. Therefore, a systematic study on basalt fibre-reinforced concrete was carried out with percentage volume fraction of ...
The optimal compressive strength for concrete made from desert sand was achieved in the mixed concrete incorporating 1% steel fibers, measuring at 50.6 MPa. Meanwhile, the highest flexural and tensile strengths were observed in a concrete mixture of 0.3% basalt fiber and 1% steel fiber, measuring 7.35 MPa and 4.6 MPa.
Basalt materials (e.g., basalt powder, aggregate, and fiber) are commonly used in cement-based materials. To understand the mechanism of the influence of basalt on the properties of cement-based ...
The introduction of basalt dust into the concrete mix in exchange for the corresponding sand dust fraction allows maintaining the same screening curve of the …
Studies show that the flexural strength, crack resistance, and frost resistance of concrete are significantly improved by basalt fiber, whereas the effect of basalt fiber on …
But unlike Portland cement – which contributes to about 8% of global CO 2 emissions due to the chemical processes and high heat needed to turn limestone into cement powder – basalt is a naturally occurring, non …
compressive, flexural and split tensile strength of Concrete with M-sand and Basalt Fibre. The length of basalt fibre 12mm was used with in the range of 0.1% to 0.3%with total volume of concrete. Due to lack of river sand, it is partially replaced with M …
times of the basalt- filled cement pastes made from OPC and basalt as a function of basalt content are graphically plotted in Fig. 2. evidently the partial substitution of ordinary Portland cement by basalt decreases the amount of water of consistency of cement pastes. Also, as the amount of basalt increases the
AbstractIn this study, silane coupling agent (KH-550) was employed to modify the surface of basalt fibers (BF) within concrete matrices, with the intent of optimizing interfacial …
In the same token, the basalt fibers in concrete subjected to dynamic compression strength has been clarified in the literature. 64 The dynamic compressive strength of concrete with 0.1% of basalt fibers increases up to 15% with increase in the strain rate up to 140 s −1. From the reports of micro study by the authors, it is clear that Basalt ...
To meet the increasing demand for aggregates, natural river sand, regarded as the most appropriate and commonly used fine aggregate in the production of mortar and concrete, …
Despite the fact that basalt rock powder and superfine sand weakened the cement mortar's mechanical properties, it was found that they can be added into the cement mortar as partial replacement ...
This study investigated the use of manufactured basalt sand as fine aggregate and mineral admixtures as a partial replacement for cement with a focus on the basic mechanical …
We had a conversation regarding building the Ecoshell I Domes using salt water, beach sand and basalt reinforcing. I explained to him that we were not looking for terribly strong cement or concrete—in most cases, we …
This paper discusses an experimental work on concrete made from river and crushed sands such as quartzite, granite, gneiss, marble, dolomite, basalt and limestone with an emphasis on physical, mechanical, and microstructural properties of fresh and hardened concrete.This paper is completed by the formulation of three types of concrete with a constant …
As unlimited resources, seawater and sea sand (SS) could be used as alternatives for fresh water and river sand in concrete constructions in areas with limited resources, such as mega-cities and isla...
However, the surface of basalt fiber is smooth, and the bonding force with the cement matrix is insufficient, making popularizing and using basalt fiber-reinforced cement-based products challenging. In this study, a bundle spliced basalt fiber (BSBF) with strong bonding force, good dispersion, and two kinds of SCBF (SCBF-Ⅰ and SCBF-Ⅱ) with ...
Pozzolana made from basalt natural material was tested for the best amount of weight percentage replacement as a blinding component in cements in this study.
basalt also finds use as aggregate in concrete. Crushed basalt aggregate are dense fine grained rocks that are very dark color-green or black and are formed when molten lava from deep in earth's crust ... Water:cement:sand:coarse aggregate=0.4:1:1.65:2.97 Table4: M50 Mix Proportions Water (kg/m3) 171 3) 427 Fly ash(kg/m3) 33 Fine aggregate ...
Basalt Sand DESCRIPTION Bonded Basalt Sand is a crushed basalt rock aggregate manufactured to the specification of ASTM C-33. Application Guidelines Basalt Sand is used as fine aggregate in concrete, grout, and mortar mixtures, and as a decorative sand. CLEAN-UP: Basalt Sand does not contain cement. Wash hands and tools with clean water.
This study investigates the impact of basalt fiber on the static and dynamic compression of coral-sand cement-based composites, as well as the mechanisms for strengthening and toughening. The samples of basalt fiber-reinforced coral sand cementitious composite (BFRCSCC) with varying fiber volume fractions (0%, 0.2%, 0.4%, 0.6%, 0.8%) …
