In other words, the stabilized specimens with 6% cement and 9% zeolite exhibited better freeze–thaw durability than the stabilized specimens with 6% cement and 3% zeolite. A decrease in the shear strength of stabilized soil specimens with increasing freeze–thaw cycles has been reported by many authors [13, 52, 53].
All admixtures (containing zeolite) were compared to a reference concrete where only Portland cement was used (Sedlmajer et al., 2015). The dosage of zeolite, which contained 45 percent clinoptilolite and 35 percent of amorphous phase, ranged from 7.5 – 30 percent of the mass of the cement.The results indicated that zeolite is an active ...
DOI: 10.1016/j.istruc.2021.09.025 Corpus ID: 240585336; Characterizing fiber reinforced concrete incorporating zeolite and metakaolin as natural pozzolans @article{Dabbaghi2021CharacterizingFR, title={Characterizing fiber reinforced concrete incorporating zeolite and metakaolin as natural pozzolans}, author={Farshad Dabbaghi …
Concrete is the world's most versatile, durable and reliable construction material and also concrete is proper mix proportions of cement, fine and coarse aggreg ... Studies on strength and workability of geopolymer concrete made with zeolite Kotla Sai Prakash; Kotla Sai Prakash 1. Department of Civil Engineering, GRIET, Hyderabad, …
This study was designed to investigate with two different artificial neural network (ANN) prediction model for the behavior of concrete containing zeolite and diatomite. For purpose of ...
2.1 Materials and concrete mixtures. Type 1 OPC and clinoptilolite type of natural zeolite were used as cementitious materials in concrete mixtures. Ordinary Portland cement meeting ASTM C 150 [] requirements was commercially available and natural zeolite came from the quarries in Semnan, Iran.Table 1 shows the chemical …
Cement paste specimens were used in this study. The mix proportions of the specimens are shown in Table 4, where "OC" represents the specimen without zeolite, and "IC" represents zeolite internal curing specimen.Firstly, zeolite particles were put in a sealed container to be soaked in water for 7 days, the water content was determined by the …
Zeolite is a natural porous aggregate with high absorption capacity [38], [39]. In some regions, e.g. in Iran, zeolite is a highly available and relatively cheap LWA to be used in concrete, since it can be found in easily accessible shallow deposits.
This paper investigates the application of natural zeolite as a substitute of cement in concrete. It studies the mechanical and durability properties of concretes containing 10% of natural zeolite and superplasticizer, as well as 10% of natural zeolite, superplasticizer and an air-entraining agent in comparison to concretes without natural …
Zeolite concrete's activation energy was higher than silica fume concrete's. [87] 9: Natural zeolite: 0, 8, 16, 24, 32, 40: 28: XRF analysis for the …
The proposed approach for the zeolite-cement treated expansive soil and the key parameter (n /AC) method matched by power format. In general, based on the process proven in this research, it is strongly recommended to use n/AC as a key parameter to predict the mechanical behavior of zeolite-cemented expansive soils with highly …
In this paper, the effects of replacing natural zeolite and industrial by-products of silica fume with a portion of cement on ordinary and high-strength concretes with a compressive strength of 35 and 50 MPa were investigated. Twenty-four concrete mix designs, with three different grades of cement with compressive strengths of 32.5, 42.5, …
Zeolite is a family of several microporous, crystalline aluminosilicate materials commonly used as commercial adsorbents and catalysts. ... They help by decreasing the temperature level during manufacture and laying of asphalt concrete, resulting in lower consumption of fossil fuels, thus releasing less carbon dioxide, aerosols, and vapors. The ...
The addition of zeolite generally increases cohesiveness and reduces the drying shrinkage of concrete. It was also shown that concrete embedded with zeolite …
In the study, both cement concrete and concrete in which 10% of the cement mass was replaced with either metakaolin or clinoptilolite zeolite were used. As reported by de Silva and Glosser, concrete strength is closely related to the reduction in microporosity caused by the presence of metakaolin and zeolite . Essentially, factors such as the ...
Compared to the control mixture, zeolite-blended concrete mixtures (untreated and calcined) showed an improvement in compressive strength at 10% cement replacement level at (7, 28 and 56 days ...
This paper investigates the application of natural zeolite as a substitute of cement in concrete. It studies the mechanical and durability properties of concretes …
Zeolite is a suitable raw material in the production of concrete and can partially replace Portland cement in cement blends. Zeolite reduces chloride permeability and expansion due to alkali-aggregate reaction, while improving resistance to acid and sulphate attacks. The use of natural zeolites as pozzolanic materials in construction dates back ...
An experimental examination of concrete durability and strength with cement substituted with zeolite [29, 30] and metakaolin [31–33] was undertaken. A study on concrete mixed with metakaolin and concrete mixed with zeolite subjected to compression strength tests for 3, 7, 28, and 90 days was conducted.
Concrete mixtures are designed, based on the ACI 211.3R [52], to investigate the properties of PC, incorporating different proportions of iron slag and zeolite to replace conventional coarse aggregate.The volume-based method and the apparent specific gravity of the materials were used in this research.
First ever 20-ton zeolite concrete (zeolite + activator from C-Crete) pour with OPC replacement. Commercial project located in Seattle, WA. More than 5,000 psi in compressive strength. Flows and pumps like …
As the sequence of this fact, substituting up to 10% of the cement with AX zeolite cement paste accelerates the maximum heat release rate time and increases the total heat by 8.5% after 48 h of ...
The main purpose of this study is to evaluate suitability of zeolite replacement as a supplementary cementing material in pervious concrete. Zeolite was used at 15%, 25%, and 35% weight ...
Zeolite usage in concrete does not harm the environment because of the natural availability [31]. Two types of concrete's hygrothermal behavior were studied i.e. …
Materials Science, Engineering. Coatings. 2023. Natural zeolite is a honeycomb-structured aluminosilicate mineral with an open crystalline structure which makes it suitable for a variety of applications. Given the …
Using calcium polysulfide as the reducing agent, synthetic zeolite as the adsorbent, and cement as the curing agent, the dual-index orthogonal test method was used to determine the best ...
Materials Science, Engineering. Coatings. 2023. Natural zeolite is a honeycomb-structured aluminosilicate mineral with an open crystalline structure which …
The results indicated that incorporating zeolite and metakaolin mixed with Micro nanobubble water, which was cured in artificial seawater conditions, compared to similar samples that were cured in standard conditions, improved the mechanical properties and durability of concrete samples. The compressive strength of 28 days concrete …
The ratios of OPC concrete and GPC with a combination of slag and zeolite were 0.061 and 0.047 respectively. This experimental result shows that the ratio between tensile strength and compressive strength of geopolymer concrete is not constant, but is zeolite/slag dependent. 3.4. Comparison of paste, mortar, and concrete results
The pozzolanic reaction of clinoptilolite zeolite is often considered a slow chemical process at early ages, and the interaction with portland cement can alter the chemical and microstructural condition due to the cation exchange capability of zeolite particles beyond the early ages. Therefore, the present study investigates the long-term …
Effects of simultaneous utilization of natural zeolite and magnetic water on engineering properties of self-compacting concrete Asian Journal of Civil Engineering, 20 ( 2 ) ( 2019 ), pp. 289 - 300, 10.1007/s42107-018-00106-w
Recent years have seen increasing interest in the use of bacteria to induce self-healing properties in concrete. In this study, the effect of Bacillus subtilis, Bacillus megaterium, and Sporosarcina pasteurii on the self-healing, durability, and strength properties of concrete containing zeolite was investigated. Four different concentrations …
Ordinary Portland cement of grade CEM I 42.5 R satisfying EN 197–1:2011 [33] standard and up to 50 μm average size natural zeolite powder of clinoptilolite was used in the study.The chemical compositions of cement and zeolite powder are presented in Table 3.Hexavalent chromium was used for the leaching test to analyze the absorption …
Zeolite Na–P1 and hydroxysodalite were observed in fly ash-based geopolymers, and after the exposure to sulfate solutions, chabazite was also identified (Bakharev, 2005b). Zeolite Na–P1 and chabazite appeared in the fly ash-based geopolymer activated with sodium silicate after its exposure to 5% sulfuric acid solution …
The results of the experiments indicate that using 10% zeolite in the concrete samples increased compressive strength and flexural strength by 3.7 and …
Zeolite is a natural pozzolan is abundant in Iran and is easily extracted and processed. Therefore, in this study, Effect of zeolite on resistance and permeability of concrete with different ...
When the binder ratio (cement:zeolite:glass powder) in the mix is changed to 75:15:10, the slump flow depends on zeolite particle size, because smaller particles of zeolite reduce the slump flow of the mix. Nevertheless, the mortar slump flow in all cases is higher than the slump of the control specimen.
In this study, cement was replaced by four various contents of 0%, 10%, 20%, and 30% by natural zeolite to evaluate its effects on the unconfined compressive strength, flexural strength, tensile ...
Corrosion is a major concern for most structural applications. Its detrimental effect significantly reduces the life of metallic components. This paper presents the results of an experimental investigation of corrosion in the steel reinforcement of concrete samples having three different substituents: 20% diatomite, 20% zeolite, and a reference without …
In this paper, a series of unconfined compressive strength (UCS) tests were performed to study the effect of cement content, zeolite content, initial moisture content, number of freeze–thaw cycles, and curing time on the UCS of low-plasticity silty sand–clayey sand. The results indicate that zeolite can be used along with cement as a …
