An increase in the percentage of crushed barite (Mix Nos. 1–4) significantly increases the linear attenuation coefficient of concrete at all energy levels energy. ... Optimization of reactive powder concrete by means of barite aggregate for both neutron and gamma rays. Constr. Build. Mater., 189 (2018), pp. 470-477. View PDF View article …
DOI: 10.1016/J.CONBUILDMAT.2015.07.140 Corpus ID: 136062376; Barite powder as sand substitution in concrete: Effect on some mechanical properties @article{Saidani2015BaritePA, title={Barite powder as sand substitution in concrete: Effect on some mechanical properties}, author={Khaled Saidani and Lasaad Ajam and …
The results showed that the replacement of cement with barite and hematite powder at all percentages reduced the compressive and flexural strengths of the concrete.
In this study, RPC mixtures were produced by the replacement of its conventional aggregate (quartz) with barite aggregate at 0, 50 and , by volume. …
Nearly 36% FS reduction was noticed for the mix blended with barite material [5]. Another study reported that higher FS was observed for the mix blended with barite material than conventional sand-based concrete mix [156]. The strength variation may be due to the morphological changes caused by the aggregates during the …
Here are some examples of minerals and rocks that can be utilized as-is in radiation shielding concrete: Barite: Barite is a mineral composed of barium sulfate. ... Lead glass is normally pulverized into a fine powder and added to the concrete mix in the same manner as conventional aggregates for producing RSC (Hanamar et al., 2023).
The heavyweight ultra-high performance concrete (HUHPC) was prepared with barite sand partially replaced by titanium-rich heavy slag sand (THS) at …
Different barite concrete mixes were designed, where barite is used once as an addition while maintaining constant the amount of cement (400 kg/m 3) and as a …
M30 grade concrete was used for which the barites and lime powder is replaced and an experimental study was carried out and the effect on compressive strength characteristics (0%, 10%, 20%, 30%) was studied.
DOI: 10.1016/J.CONBUILDMAT.2018.09.022 Corpus ID: 139741726; Optimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma rays @article{Gke2018OptimizationOR, title={Optimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma rays}, author={H. …
Ultra-high performance concrete (UHPC) is a superior type of cement-based material having enhanced properties to normal concrete. As per ACI 239R-18, UHPC is a concrete that has a minimum compressive strength of 150 MPa and ductile behavior [1]. It is developed in a low water-to-binder environment and has a very dense …
Although the ten- Barite powder Concrete sile strength has been reduced up to 50%, it has been shown that is possible to produce a barite-based Compressive strength concrete with a minor effect on the main mechanical parameters: the compressive strength at 28 days Tensile strength has decreased only by 10% and the elastic modulus at one year of ...
REVIEW PAPER ON USE OF BARITE POWDER IN CONCRETE Bhruguli Gandhi Lecturer, Applied Mechanics Department, Government Polytechnic, Himatnagar, Gujarat Technological University, Ahmedabad. ... Table :2 Mix prepositions Water Cement Fine aggregates Coarse aggregates 186 lit/m3 414 kg/ m3 610.30 kg/ m3 1172.32 kg/ m3 …
The heavyweight ultra-high performance concrete (HUHPC) was prepared with barite sand partially replaced by titanium-rich heavy slag sand (THS) at replacement proportion of 0%, 30%, 50%, 70% and in this work. The results show that THS incorporation can effectively improve the mechanical properties and reduce the volume …
DOI: 10.1016/j.dibe.2023.100190 Corpus ID: 259672097; Improving the resistance of ultra-high-performance concrete against nuclear radiation: Replacing cement with barite, hematite, and lead powder
This paper presents findings of research conducted on the improvement of radiation shielding in concrete, using barite as fine aggregate. Barite is a heavy mineral, having specific gravity in ...
In the study, performance of reactive powder concrete was researched with regard to gamma-ray and neutron attenuation when its normal weight aggregate replaced with heavyweight aggregate (barite). For this purpose, reactive powder concrete mixtures were prepared quartz aggregate, barite aggregate and their blending …
The attenuation coefficient of concrete fc'25 with barite as aggregates and concrete with barite as coarse aggregate is 0.294 cm-1 and 0.230 cm-1, respectively; The attenuation coefficient of concrete fc'35 with barite as aggregates and concrete with barite as coarse aggregate is 0.304 cm-1 and 0.271 ...
The present study aims to determine the mix proportion of binder, heavyweight aggregates, water-to-binder ratio, and additives to develop self-compacting concrete with a bulk density higher than 2600 kg m−3. It also aims to evaluate the engineering properties, pore structure, and microstructure of established heavyweight self-compacting …
The mix design of heavyweight concrete is very similar to ordinary concrete. The mix design of heavyweight concrete is presented in ACI ... concluded from their research on reactive powder concrete using barite aggregate that barite increased the gamma ray mass attenuation coefficients of reactive powder concrete mixtures below 0.3 MeV and ...
In the study, performance of reactive powder concrete was researched with regard to gamma-ray and neutron attenuation when its normal weight aggregate replaced with heavyweight aggregate (barite). For this purpose, reactive powder concrete mixtures were prepared quartz aggregate, barite aggregate and their blending 50–50%, …
Numerous studies proved that utilization of barites powder in concrete as a partial replacement for fine aggregate and coarse aggregate to improve the gamma ray …
III. METHODOLOGY. Barites concrete samples of size 150mm X150 mm X150mm were designed as per IS 519-1959, IS 10262-2009 and IS 456-2000 [24-26] with 1% of TiO2 for various percentages of barites powder, based on trial mixes the optimu dose of super plasticizer was obtained and used as 1%.
From captivating barite crystals and barite rose formations to essential barite powder (or barytes powder if you may), this mineral goes a long way to support energy security, create jobs in mining, processing and transportation, and to drive economic growth. ... Heavy Concrete: Barite serves as a dense aggregate in specialized …
and measurement facilities. It was found that as the loading barite level is increased within the concrete mix the linear attenuation coefficient is improved for both the geopolymer and ordinary samples. Keywords: cement, barite, Geopolymer, concrete, NaI, Gamma-ray 1. Introduction As neutron particles, X-ray and ɤ-ray are potentially harmful
Barite physically is not soluble in water and does not cause any chemical reactions with other drilling mud chemicals. In general, barite is used for raising the density of water-based mud and oil-based drilling fluids up to 22 ppg (2.64 sg). Barite is also used for weighting up kill fluids, and in the Barite lock plug formulation.
Barite powder has high specific gravity so the pores in the barite powder is filled by fine silica fume particles it will helps to increase the strength in concrete. Combination of barite powder and silica fume replacement cement in concrete is a better alternative to cement in self compacting concrete. Mix Splittensile strength(N /mm²)
Barite powder is replaced by weight with white cement as a mineral additive. In this study, five series of SCM including control mixture consisting of 5%, 10%, 20% and 30% barite powder with total ...
Concrete mix design was made for M20 grade concrete as per IS 10262-2019 for different mix proportions0%, 5%, 10%, 15% and 20 % of barites powder. ... Saidani K, Ajam L, Ben Ouezdou M. Barite powder as sand substitution in concrete: Effect on some mechanical properties. Construction and Building Materials. 2015;95:287-295. doi:10.1016/j ...
Optimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma rays. Construct. Build. Mater. (2018) ... This study assesses the effects of three forms of concrete: geopolymer concrete, reactive powder concrete (RPC), and ready-mix concrete (RMC) on the environment, the economy, and …
Barite of a size 0 – 100 microns basically is used in concrete. Barite is clean, smooth, unresponsive and inexpensive naturally available mineral. It is non-toxic & also …
After that, a designed mix which comprised barite/goethite aggregates plus fine-powdered boron carbide additive, was proposed to improve the overall radiation …
The remarkable increment in radioactivity risks of today's industrial world is required to the efficient design of shielding structures. In the present study, the optimal design parameters of barite concrete shields for providing the highest gamma radiation shielding capability were researched by using a hybrid technique of the Box-Behnken …
Optimization of reactive powder concrete by means of barite aggregate for both neutron and gamma rays. Constr. Build. Mater. (2018) ... The ISODOSE graphs showed that although a one-layer hot cell with Barite concrete (BA) walls of 80 cm is not enough for radiation-safe work on a hot batch, a one-layer hot cell of BA with 90 cm …
The results showed that the replacement of cement with barite and hematite powder at all percentages reduced the compressive and flexural strengths of the concrete. Their highest compressive strengths were at 10% cement content (106 and 109 MPa, respectively). ... UHPC with 30% lead powder was the most efficacious mix design for …
Study of partial replacement of cement by barite powder and silica fume in self compacting concrete - Download as a PDF or view online for free ... Combination of barite powder and silica fume …
The results showed that the replacement of cement with barite and hematite powder at all percentages reduced the compressive and flexural strengths of the concrete. ... UHPC with 30% lead powder ...
After that, a third concrete mix was proposed and designed to reveal proper shielding efficiency against all possible types of hazardous external radiations while not compromising or improving the physic-mechanical properties of the produced concrete. The third proposed mix comprises barite coarse aggregates, goethite/sand fine …
