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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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7 Occupational exposure to cement dust might cause toxic effect on vital organs such as respiratory, renal and liver. 8 Cement is a dark grey colored powdery substance of aluminis, silica, lime ...
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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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Furthermore, these generated waste materials contaminate natural resources and lead to adverse environmental effects (Aliabdo et al., 2014; Bostanci, 2020; Nayak et al., 2022).Oza et al. (2022) further added that marble dust contains dangerous chemicals for workers, adversely affecting health. Despite the environmental concerns …
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Dust can be produced by almost all production processes in Portland cement factory. Dust exposure potentially can affect respiratory function. But evidence for respiratory effect of cement dust exposure has not been conclusive. In this study we assessed effect of cement dust exposure on respiratory …
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There are few longitudinal data, but recent studies report a dose–response relationship between cement production dust exposure and declining lung function indicating a causal relationship, and underlining the need to …
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Over the course of millions of years, the earth regularly removes carbon dioxide from the atmosphere through a natural process called weathering, when exposure to the elements wears down surface ro…
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The reduction in lung function was probably associated with high cement dust exposure. In parallel to our findings, Merenu et al. investigated the effect of cement dust exposure on 56 cement factory workers with a mean of 10 years exposure to cement dust on lung function. They found that the vital capacity and forced expiratory volume in …
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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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The machine was turned off after 22 cycles, and the corundum powder was refreshed. The sample was rotated 90° clockwise. The disc and contact surface were cleaned each time, and the 2nd, 3rd, and 4th surfaces were abraded in this method, finishing the first stage after 88 cycles. ... Effect of cement kiln dust (CKD) on mortar …
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This may be caused by increased sensitivity of the airways related to long-term cement dust exposure in general or by hypersensitivity to specific components such as the trace amounts of chromium present in the cement dust, and might be a sign of chronic negative health effects. This should be evaluated further in future longitudinal …
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an additive for a particular project. Cement clinker manu-facturing generates cement kiln dust (CKD) that must be disposed of properly. For instance, Iran produced nearly 75 million tonnes of various types of cement in 2021, with 8 million tonnes of by-product CKD mostly disposed of in landlls. CKD is gaining popularity as a construction
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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 production workers. Design and setting Systematic literature searches (MEDLINE and Embase) were performed. Outcomes were restricted to …
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Construction Dust Causes, Effects and Remedies Construction dust can seriously damage the health of construction workers and if exposed for longer times can eventually even kill them. About 22,000 to 52,000 …
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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 percentage of cement dust content increases. The indirect tensile strength and unconfined compressive strength have also increased as the ratio of cement dust increased. The optimum cement dust ratio was found to be of the used mineral filler. Hence, cement dust can totally replace lime
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Studies have shown that adverse respiratory health effects seen in the people exposed to cement dust, example in increased frequency of respiratory symptoms and decreased …
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Portland Cement Dust. attendants (5) and machine operators (23) who were said to work on the ... Effect of cement dust on the growth of Delonix regia. Table 2. Analysis of dust collected around the National Cement Factory. MWHC 65.72% Soil pH …
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Effect of demolished concrete and stone crusher dust on properties of M−40 grade paver blocks ... from the surface, paver blocks were tested for compressive strength with the help of compressive strength testing (CTM) machine and capping of the specimen ... F. Qais Abbas, Effect of recycled aggregate on interlocking concrete blocks for …
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Natural aggregates with three different gradings have been used to produce concretes with a constant water cement ratio of 0.5 and cement contents varying between 300 kg/m3 and 425 kg/m3. Aggregate gradings differed only in the dust (particles smaller than 300 μm) contents: Nil, 3%, 9%. Dust deficient aggregates always produced less …
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The pulmonary and nonpulmonary effects of cement dust exposure in 52 randomly selected, directly exposed cement workers and 24 maintenance workers were investigated.
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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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Health effects. Cement can cause ill health by skin contact, eye contact, or inhalation. Risk of injury depends on duration and level of exposure and individual sensitivity. Hazardous materials in wet concrete and mortar …
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Therefore, the aim of this review is to gather the potential toxic effects of cement dust and to minimize the health risks in cement mill workers by providing them with information …
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"The harmful effect of cement dust upon living organisms consists in irritating, sensitizing and pneumoconiotic properties of its components", as cement dust provoke atrophic and hypertrophic alteration in nasal and pharyngeal mucosa and exfoliative bronchitis in animal studies. Also, the Odds Ratio (OR) of chronic bronchitis was 1.7 in the ...
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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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Inhaling high levels of dust may occur when workers empty bags of cement. In the short term, such exposure irritates the nose and throat and causes choking and difficult breathing. Sanding, grinding, or cutting …
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Background: Cement dust is one of the major air pollutants and its exposure causes various problems. It has deleterious effect on vital organs and may affect liver function.
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Studies on the effect of cement-kiln dust on vegetation. Studies on the effect of cement-kiln dust on vegetation. Studies on the effect of cement-kiln dust on vegetation J Air Pollut Control Assoc. 1966 Mar;16(3):145-50. doi: 10.1080/00022470.1966.10468456. Author E F …
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We utilized CiteSpace (Chen, 2006) to analyze the exposure and health impacts of construction dust in the above-mentioned studies.The country collaboration analysis and keyword co-occurrence analysis were implemented as shown in Fig. 2.The network of collaborating countries consists of 18 nodes and 10 links (Fig. 2 A).The USA …
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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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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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LAW ISE EL- M, biomed.harmacol. j Vol. 15(4), 2061-2068 2022 2064 table 1. Distribution of cement exposed workers and controls according to prevalence of respiratory symptoms Variables Non ...
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IJCBS, 24 (4) (2023):61-65 Sadek et al., 2023 61 Effect of Cement Dust Components on Human Health Eslam abdelfattah Sadek1*, Ahmed M. M. Hany2, Alaa Rashad3 1Department of Public Health and Community Medicine, Faculty of Medicine, South Valley University, Qena, Egypt. 2Department of Public Health and Community …
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Concrete dust could have more potential to cause silicosis compared to cement, as it contains >30 wt.% crystalline silica, while cement dust contains mainly …
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The effect of chronic cement dust exposure on lung function of cement factory workers in Sokoto, Nigeria. Afr. J. Biomed. Res. 2007; 10 doi: 10.4314/ajbr.v10i2.50617. [Google Scholar] 12. Bazas T. Effects of occupational exposure to dust on the respiratory system of cement workers. Occup. Med. 1980; 30:31 ...
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