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concrete, or construction rubble can generate respirable crystalline silica dust. When inhaled, the small particles of silica can irreversibly damage the lungs. This fact sheet describes dust controls that can be used to minimize the amount of airborne dust when using crushing machines as listed in Table 1 of the Respirable
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Several health conditions are associated with cement dust exposure; obstructive and restrictive lung disorders are the most common consequences. The aims of this study were to assess the pulmonary function of cement factory workers and to determine the distribution of respiratory consequences resulting from dust inhalation. …
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The study of the effects of granite dust on concrete performance focuses on two aspects. One is the cement replacement, and the other is the fine aggregate replacement. Elmoaty et al. [13] used granite dust (filtered by a 0.075-mm sieve) to replace cement by 5%, 7.5%, 10.0% and 15%. They found that the concrete compressive …
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Granite dust is regarded as a valuable and easy-to-obtain alternative for customary, natural fine aggregate. However, granite dust can be employed in engineered cement composites (ECC). Nevertheless, multiple health and environmental hazards are attributed to it, due to the fact that it is a non-biodegradable material. The current study, …
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Tuan et al. ( 2020) used multiple machine learning algorithms to predict the compressive strength of concrete with concrete proportion and age as input variables, and the results show that the prediction performance of XGB is the best among all of these algorithms.
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Al-Harthy et al. investigated the effect of cement kiln dust on mortar and concrete mixtures. They replaced the CDK with cement at the ratios of 5%, 10%, 15%, 20%, 25%, and 30%. ... The machine was turned off after 22 cycles, and the corundum powder was refreshed. The sample was rotated 90° clockwise. The disc and contact …
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Characteristics of the person inhaling particles can also influence the effects of dust. Breathing rates and smoking are among the most important. The settling of dust in the lungs increases with the length of time the breath is held and how deeply the breath is taken. Whether breathing is through the nose or mouth is also important.
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Dust, which is thought to have originated from a cement factory in California, was characterized and studied for its effect on trees, plants, and property values in the area. The effects on plants and trees were determined to be primarily mechanical; i.e., prevention of gas exchange due to clogging of stomata.
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The dust produced while cutting, drilling etc dried concrete and mortar can cause more serious lung disease. More information on assessing and controlling this risk can be found in the section on construction dust. Control. Prevent: Where possible think about eliminating or reducing the amount of cement used and contact with it. Consider:
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exposed to cement dust pollution. Children studying in the schools situated in near to factories are particularly prone to cement dust exposure. Several studies have shows …
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Cement is used in a variety of construction products. Most commonly it can be found in the production of concrete. Concrete is a mix of cement, water, and aggregates that can be found in nearly every construction project throughout the world.Whether you are mixing up a batch of concrete or repair mortar, or drilling, …
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Several health conditions are associated with cement dust exposure; obstructive and restrictive lung disorders are the most common consequences. The …
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Destructive tests on concrete as a replacement of fine aggregates with stone quarry dust revealed that there is an upsurge of compressive resilience by 6.7% [11], 10.56% [12], 22% [13], 22.76% [14 ...
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This study aimed to determine the effect of long term exposure to cement dust on lung function in non-smoking cement mill workers. This is a cross-sectional study of respiratory functions. Spirometry was performed in 100 apparently healthy volunteers; 50 non-smoking cement mill workers and 50 non-sm …
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Various studies lead to the conclusion that toxic pollutants in cement dust affect the growth of plants (Iqbal and Shafig 2001).Dust from cement factories may have an effect by forming toxic solutions which come from water reacting with alkaline dust or through a decrease in light (Manning 1971).Mercury was found in the leaves of Weigela …
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Chronic exposure to cement dust may induce adverse health effects, including a significant decrease in lung function.
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The low level water hardness could be attributed to cement kiln dust that possibly flowed along with effluent as part of by product from cement plant. This dust is a significant resource material for lime substitute that can be utilised as a chemical addition for stabilising wastewater receiving river. The dust is known to contain high CaO ...
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The research by Li et al. indicates that adding granite dust instead of fly ash into manufactured sand concrete could improve its frost resistance when the content of …
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1. The basics of cement manufacture – 2. History of cement manufacture – 3. Portland cement in today's world 2. Raw materials management system – 22. Concrete problems 16 1. Raw materials – 2. Raw mix – 3. Reserves – 4. Crushing – 5. Drying – 6. Pre-blending – 7. Storage and handling 3. Raw milling and blending 3.
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High levels of dust can be produced when cement is handled, for example when emptying or disposing of bags. Scabbling or concrete cutting can also produce high levels of dust that may contain silica. What are the risks? In the short term, exposure to high levels of cement dust irritates the nose and throat.
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the possible effect of cement dust on plants. the possible effect of cement dust on plants. the possible effect of cement dust on plants science. 1909 nov 5;30(775):652-4. doi: 10.1126/science.30.775.652. author g j peirce. pmid: 17807667 doi: 10.1126 ...
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Total cement dust exposure was related to acute respiratory symptoms and acute ventilatory effects. Implementing measures to control dust and providing adequate personal respiratory protective equipment for the production workers are highly recommended. ... Background: Few studies have been carried out on acute effects of …
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The effect of cement dust exposure on haematological and liver function parameters of cement factory workers in Sokoto, Nigeria Niger J Physiol Sci. 2008 Jun-Dec;23(1-2):111-4. doi: 10.4314/njps.v23i1-2.54945. Authors F B O Mojiminiyi 1, I A Merenu, M T O Ibrahim, C H Njoku. Affiliation 1 Department of ...
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Abrasive resistance of the paver blocks was tested according to [18] i.e. four 71 mm concrete cubes were cut from each replacement and placed on the grinding path of abrasion testing machine. 16 cycles of 22 rotations/cycle were applied after spraying 20 g of abrasive sand in each cycle. It was found to be increasing with increase in ...
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It was observed that 10% replaced marble dust in concrete dominated significantly. A 5% replacement of the waste marble dust in concrete was followed closely. The blended concrete's compressive, flexural, and split tensile strengths were favourable when marble dust was used in the range of 5–10% as a substitute (Kumar et al., 2021).
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Cement production in the world market is steadily increasing. In 2000, it was 1600 million tons, while as of 2013, the annual amount exceeded 4000 million tons. The burning of cement clinker is associated with the generation of waste. It is estimated that the amount of cement kiln dust (CKD), during combustion, reaches about 15–20%, which …
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Background: Previous studies reported equivocal results about effects of cement dust on the lung. The objective of the present study was to assess the impact of cement dust on the respiratory ...
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Objectives Based on findings from a systematic literature search, we present and discuss the evidence for an association between exposure to cement dust and non-malignant respiratory effects in cement …
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Introduction. The cement industry is a fast-growing globally, and in Bangladesh. 1 There has been a boost in the developing market due to sustained construction activity levels, which has led to increased demand for cement. 1–3 The cement industry is a source of environmental pollution. 4 In the various stages of …
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Adverse Effects of Inhaling Concrete Dust. Inhaling concrete dust, especially when done frequently or in large quantities, can have several adverse health effects: Silicosis: The primary concern with inhaling concrete dust is the development of silicosis. Silicosis is a lung disease caused by breathing in tiny bits of silica, a …
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