The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

Ouda, Ahmed S.; Abdel‐Gawwad, Hamdy A.

doi:10.1016/j.hbrcj.2015.06.005

Cited by 39 publications

(14 citation statements)

References 7 publications

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“…The elongation of TS aggregates allowed a greater depth of embedment while their angularity improved the bond within the matrix. Similar results were reported by Ouda and Abdel-Gawwad [35] and Guo et al [36]. Ouda and Abdel-Gawwad observed that the rough surface and angularity of oxygen furnace slag aggregate are attributed to the progressive contribution of strength up to 100% replacement.…”

Section: Compressive Strengthsupporting

confidence: 88%

Mechanical Properties of Tin Slag Mortar

et al. 2021

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The increased demand for cement mortar due to rapid infrastructural growth and development has led to an alarming depletion of fine aggregate. This has prompted the need for a more sustainable material as a total/partial replacement for natural fine aggregate. This study proposes the use of tin slag (TS) as a replacement for fine aggregate in concrete to bridge this sustainability gap. TS was used to replace fine aggregate at replacement levels of 0%, 25%, 50%, 75%, and 100% in cement mortar. Fresh and hardened properties of TS mortar were obtained. Flow tests showed that, as the TS quantity and the w/c ratio increased, the mortar flow increased. Similarly, the compressive strength increased as the TS replacement increased up to 50% replacement, after which a decline in strength was observed. However, with the TS replacement of fine aggregate up to 100%, a compressive strength of 6% above control was attained. The morphological features confirm that specimens with TS had a denser microstructure because of its shape characteristics (elongated, irregular, and rough), and, thus, plugged holes better than the control mortar. The natural sand’s contribution to strength was a result of better aggregate hardness as compared to TS. Hence, TS can be used as alternative for fine aggregate in sustainable construction.

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Section: Compressive Strengthsupporting

confidence: 88%

Mechanical Properties of Tin Slag Mortar

et al. 2021

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“…Half-value layer is usually used to assess the effectiveness of a material as radiation shielding. An HVL is the material thickness value needed to reduce the intensity of an X-ray beam to half of the initial intensity [16].…”

Section: The Effect Of Pb-nitrate Filler Addition On the Attenuation Coefficient And Hvl Of Composite Apronmentioning

confidence: 99%

Addition of Lead (Pb)-Nitrate Filler on Polymer Composite Aprons for X-Ray Radiation Shielding

et al. 2021

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Radiation shielding aprons are needed by radiation workers to minimize radiation exposure to the body. The aprons at present use fabric-coated lead plates which are heavy and rigid materials and therefore are not comfortable to use. Polymer aprons from cassava starch and glycerin with addition of Pb-nitrate filler at 0 %, 2 %, 4 %, and 6 % have been synthesized. Mixtures for synthesizing the polymer apron composites were heated using a magnetic stirrer at a speed of 800 rpm at 160 °C for 25 minutes. Then, the polymer apron composites were dried in an oven for 24 hours at 70 °C. The effectiveness of the apron was determined by calculating the attenuation coefficient (μ), half-value layer (HVL), and radiation absorption. The mechanical properties of the aprons were characterized by testing their tensile strengths using an A&D MCT-2150 universal tester. The result shows that the optimal addition of Pb-nitrate filler of as much as 6 % produced aprons with an attenuation coefficient of 1248 cm -1 , HVL of 0.54 cm, and radiation absorption of 25 %, while the aprons' tensile strength was obtained as 28.244 MPa. The addition of Pb-nitrate as a filler in apron composites proportionally improves the quality of materials used as radiation shields. More detailed research is still needed to obtain the best apron.

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“…Moreover, several studies have demonstrated that steel slag has good physical characteristics, such as high strength and durability, which shows a potential to be used as aggregates in the construction industry [12,13]. Consequently, the use of industrial byproducts by the construction industry can contribute to solve problems of lack of aggregates in several locations and reduce environmental problems related to mining [14]. So, the civil construction sector is one of the industries that are most interested in the use of this type of waste and seeks to incorporate it in construction materials, aiming to improve the properties of its products, reduce production costs, and generate less environmental impact.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of mortars produced with Baosteel slag short flow (BSSF) steel slag as fine aggregate

et al. 2021

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The objective was to evaluate the influence of Baosteel slag short flow (BSSF) steel slag, a byproduct of a Brazilian steel mill, as a fine aggregate on the properties of fresh state and on the compressive strength of mortars. The experimental work was to characterize the BSSF steel slag and to produce simple mortars (only cement) and mixed mortars (cement and lime), replacing the natural sand with the slag aggregate in 20%, 40%, and 60% by volume. The fresh state tests were specific mass, incorporated air, water retention, and squeeze-flow, while in the hardened state, compressive strength at 28 days was investigated. It was verified that mortars with higher slag contents required greater amounts of water to obtain the spread (consistency) on the flow table, which was fixed at 260±5 mm. The mortars with slag presented higher specific mass since the slag had a higher density than natural sand and less water retention in the case of simple mortars. In addition, it was verified that the mortars with BSSF steel slag presented lower values of maximum displacement in the squeeze-flow test, which negatively affected its workability in the fresh state, besides the properties of mortar adherence. In addition, it was verified through the analysis of variance that the substitution of natural sand by BBSF steel slag did not significantly influence the compression strength of mortars.

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The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

Cited by 39 publications

References 7 publications

Mechanical Properties of Tin Slag Mortar

Mechanical Properties of Tin Slag Mortar

Addition of Lead (Pb)-Nitrate Filler on Polymer Composite Aprons for X-Ray Radiation Shielding

Evaluation of mortars produced with Baosteel slag short flow (BSSF) steel slag as fine aggregate

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