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Compound Effect of Cement Dust Emitted by Closely Located Cement Plants on Soil of Nokha (Bikaner)

Compound Effect of Cement Dust Emitted by Closely Located Cement Plants on Soil of Nokha (Bikaner)

90’s at Nokha tehsil (Bikaner)in the western Rajasthan. These factories have emitted cement dust in the vicinity for a long time. Therefore, to study the effect of cement dust on soil and plants eighty samples of soil were collected at surface and 15 cm depth around the factory within the radius of 3 km in four radial directions. This cement dust deposited on upper most soil contain elements like Zn, Cu, Mn, and Na well above permissible limits with higher pH, which are hazardous to plants and soil structure.

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Assessment of Cement Dust Deposit in a Cement Factory in Cotonou (Benin)

Assessment of Cement Dust Deposit in a Cement Factory in Cotonou (Benin)

Also, cement dust has been identified as an eye allergen and can cause runny eyes, and Conjunctivitis [27]- [30]. Soussia et al. [1] found acute and chronic eye conditions among workers people at a Portland cement plant. Additionally, Dolgner et al. [31] have demonstrated that cement dust generated during cement production causes congenital malformation in the population living in the vicinity of the cement plant. These congenital abnormalities were cleft lip and palate, facial hemangioma, icterus neonatorum, swelling on the back of hands and feet, inguinal hernia, umbilical hernia, lumbar meningomyelocele and ventricular septal defect.

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Effects Of Cement Dust On Plant Physiology Of Trees Around Ewekoro And Obajana Cement Factories

Effects Of Cement Dust On Plant Physiology Of Trees Around Ewekoro And Obajana Cement Factories

referen ce sample at 3km with mean concentration o f 0.12±0.06%. Carbon (C) concentration values o f th e leaf samples ranged from 1.00 – 26.33% and 2.00 - 24.50% in both locations (Obajana and Ewekoro) respectively. Obajana reference s ample at 3km away h as 3.00ppmand Ewekoro referen ce sample at 3km away has 4.33ppm r espectively. The values fo r bark samples rang ed from 1.00 - 5.50% and 3.00 – 7.00% in both locations (Obajana and Ewekoro) respectively. Obajana referen ce sample at 3km away has 9.75ppmand Ewekoro reference sample at 3km away has 5.67ppm respectively. The mean concentrations values o f carbon (C) ranged from 2.50±2.23% - 14.67±22.3% and 2.25±1.36% - 5.50±3.43% for leaf and b ark respectively, in ferring that C concentrations are higher in the leaf samples from the res earch sites than the referen ce sample at 3km with mean concentration value o f 2.00±2.61% and lower in bark samples from the research site than the reference sample at 3km with mean concentration value o f 8.00±7.87% respectively. High carbon content in the samples reflects the storing abilities o f trees as sinks for air pollutants emitted from the cement factori es. Iron (Fe) concentration values o f th e leaf samples ranged from 0.51 – 1.64% and 0.70 - 1.69% in both locations (Obajan a and Ewekoro) resp ectively. Obajana reference sample at 3km away has 0.85ppmand Eweko ro reference sample at 3km away has 1.34ppm respectively. The values for bark samples ranged from 0.68 - 1.78% and 0.47 – 1.72% in both locations (Obajana and Ewekoro) resp ectively. Obajana referen ce s ample at 3km away h as 1.02ppmand Ewekoro referen ce s ample at 3km away has 1. 00ppm respectively. Iron (Fe) mean concentration values rang ed from 0.83±0.35% – 1.53±0.21% and 0.82±0.41- 1.32±0.60% for leaf and b ark respectively and also connoting significant variability among the leaf, bark and referen ce samples at 3km of mean concentration 1.06±0.45% and 1.01±0.24% for leaf and b ark respectively.The maximum range of the v egetation elemental nutrients are higher in all the samples when comp ared with the referen ce s amples at 3km away from th e cement factory. This implies that cement dust has both direct and indirect effects on chemical compositions of trees and supported by Asadu and Agada, 2008 who reported that the concentration o f metals such as Fe, Al, Zn, Cu, Pb, Cr and Cd were found relatively high in the soil nearby cement industries as compared to normal.

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Cement dust exposure and acute lung function: A cross shift study

Cement dust exposure and acute lung function: A cross shift study

ces [9]. A few studies [4,5] have suggested a relationship between exposure to cement dust and acute, respiratory symptoms and changes in lung function. In a cement fac- tory in Ethiopia there was an association between respi- rable dust and peak expiratory flow recorded after shift [4]. In an exposure-response study, Mwaiselage et al. [5] found that exposure to respirable dust was significantly correlated with percentage cross-shift decrease in peak expiratory flow (PEF) for 29 workers. Mwaiselage et al. [5] also reported that the concentration of respirable dust by mass was approximately 40% of the "total" dust, sug- gesting that the mass fraction of larger particles is higher than that of smaller particles in cement dust. To investi- gate the association between a broader size range of the cement particle exposure and acute respiratory effects, we measured "total" dust in this study. Total dust deposits along the whole respiratory tract and might be associated with respiratory symptoms from the upper and lower air- ways. The thoracic fraction of the total dust may provoke

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The Effect of Cement Dust on the Lung Function in a Cement Factory, Iran

The Effect of Cement Dust on the Lung Function in a Cement Factory, Iran

exposed workers compared to the control group. Interestingly enough, occupational inhalation exposure to cement dust is likely to induce minor degree of restrictive ventilatory impairment. This interpretation is in agreement with the finding of Kumar et al., [ 22] indicating ratio of FEV1/FVC in restrictive pulmonary diseases is close to the normal. Comparison of the demographic parameters of exposed with control group were identical, our results strongly suggest that it is important to match subjects using demographic parameters in lung function. This finding is agreement with the views expressed by Njoku and Anah (1999) [ 23]. Moreover, the prevalence of chronic respiratory symptoms were sighted to increase with increasing cumulative respirable dust exposure of 20.0 – 99.9 and ≤ 100.0 mg/m 3 -year [ 24]. In general conclusion, the

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Effect of Cement Kiln Dust on Some Properties of Soil

Effect of Cement Kiln Dust on Some Properties of Soil

The cement industry also plays an important role in the imbalances of the environment and produces air pollution hazards Stern 1 . It also causes the pollution in soil where cement industries are located. The particles of cement dust can enter into soil in the form of dry, humid or occult deposits and can alter its physical-chemical properties Ahiamadjie et al. 2

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The Contribution of the GIS and the Principal Component Analysis in the Study of the Cement’s Dusts Impact on the Top Soils in the Central Part of the Oujda Taourirt  Corridor (Eastern Morocco)

The Contribution of the GIS and the Principal Component Analysis in the Study of the Cement’s Dusts Impact on the Top Soils in the Central Part of the Oujda Taourirt Corridor (Eastern Morocco)

Cement dust pollution is one of the sources of atmospheric pollution. The main impacts of the cement activity to the environment are the broadcasts of dusts and gases. The objective of this study is to determine the effects of cement dust pollution on physico-chemical characteristics of the soil at the vicinity of the cement factory in Oujda-Taourirt corridor (Eastern Morocco) using Principal component analysis (PCA) and geographical information system (GIS). Forty one (41) surface soils (0 - 3 cm) were collected from the six rural townships surrounding the cement factory. The collected soil samples were analyzed for their chemical properties (CaO, Al 2 O 3 , Fe 2 O 3 , K 2 O, MgO, SO 3 and SiO 2 ) as well as their

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Method Established for Source Apportionment of Human Health Risk in Regional Atmospheric Environment

Method Established for Source Apportionment of Human Health Risk in Regional Atmospheric Environment

University, the health risks contribution rates to exposed group were estimated according to the established method, and compared with the results of source apportionment. The results were as follows: the concentration contribution rates calculated by chemical mass balance (CMB) model rank from high to low as vehicle exhaust dust (43.4%), urban fugitive dust (29.9%), coal fly ash (21.5%), construction cement dust (1.2%) and metal smelt dust (0.7%); the non-carcinogen hazard index (R n ) contribution rates rank from high to low as urban fugitive dust (87.7%), vehicle exhaust dust (5.9%), coal fly ash (3.0%), metal smelt dust (2.5%) and construction cement dust (0.9%); the cancer risk value of carcinogen (R c ) contribution rates rank from high to low as urban fugitive dust (97.1%), vehicle exhaust dust (1.7%), coal fly ash (0.5%), metal smelt dust (0.5%) and construction cement dust (0.2%). Apparently, the concentration contribution rates were very different from the hazard index of non-carcinogen (R n ) contribution rates and the cancer risk value (R c ) contribution rates. The source with the highest concentration contribution was not the major influence on human health. The influence of source with the contribution rate lowest concentration contribution on human health should not be ignored. This method could also be used in health risk assessment of other pollutants from other sources.

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Morphological Aspects of Saffron with Respect to Industrialization

Morphological Aspects of Saffron with Respect to Industrialization

With regard to the impact of varied intensities of cement dust pollution on the number of corms/25cm 2 , the number of corms was higher at the site free of cement pollution and gradually declining towards source site vis- a-vis plants the reason might be due to less food accumulation in the corms due to decrease in leaf size, losses in chlorophyll content and subsequently lesser production of daughter corms (Jan, 2009). Similarly, less production of seeds due to cement dust pollution have been reported in Brassica campestris (Shukla et al., 1990) and Brassica oleraceae (Zargar et al., 1999).

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Exposure to Respirable Dust and Crystalline Silica in a Cement Plant

Exposure to Respirable Dust and Crystalline Silica in a Cement Plant

5. Mwaiselage J, Moen B, Bråtveit M. Acute respiratory health effects among cement factory workers in Tanzania: an evaluation of a simple health surveillance tool. International archives of occupational and environmental health. 2006;79(1):49-56. 6. Zeleke ZK, Moen BE, Bråtveit M. Cement dust exposure and acute

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Occupational Health and Safety in Cement Industry

Occupational Health and Safety in Cement Industry

Key words: cement factory; health hazard; Risk assessment, Questionnaire; workers health problems 1. INTRODUCTION: Cement dust is one of the major air pollutants. It consists of hazardous materials such as: alkaline compound (lime) that are corrosive to human tissue, silica that is abrasive to skin and causing damage to lung (silicosis), and chromium that can cause allergic reaction (pulmonary as well as skin). Cement dust affects three main organs, in general, like eyes, lungs and skin causing different types of respiratory, skin and eye diseases. Keeping in view of above facts, it was decided to investigate the occupational diseases in the cement plant workers exposed to cement dust. Cement factories represent one of the most important strategic basic elements in the economic development of any country. The invention of Portland cement is usually attributed to Joseph Aspdin, who took out a patent in 1824 for a material that was produced from a mixture of limestone and clay. It is called “Portland” because the concrete made from it looks like natural stone from the Isle of Portland. alkaline compound (lime) that are corrosive to human tissue, silica that is abrasive to skin and causing damage to lung (silicosis), and . chromium that can cause allergic reaction (pulmonary as well as skin). Cement dust affects three main organs, in general, like eyes, lungs and skin causing different types of respiratory, skin and eye diseases. Keeping in view of above facts, it was decided to

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Occupational Health and Safety in Cement Industry

Occupational Health and Safety in Cement Industry

Key words: cement factory; health hazard; Risk assessment, Questionnaire; workers health problems 1. INTRODUCTION: Cement dust is one of the major air pollutants. It consists of hazardous materials such as: alkaline compound (lime) that are corrosive to human tissue, silica that is abrasive to skin and causing damage to lung (silicosis), and chromium that can cause allergic reaction (pulmonary as well as skin). Cement dust affects three main organs, in general, like eyes, lungs and skin causing different types of respiratory, skin and eye diseases. Keeping in view of above facts, it was decided to investigate the occupational diseases in the cement plant workers exposed to cement dust. Cement factories represent one of the most important strategic basic elements in the economic development of any country. The invention of Portland cement is usually attributed to Joseph Aspdin, who took out a patent in 1824 for a material that was produced from a mixture of limestone and clay. It is called “Portland” because the concrete made from it looks like natural stone from the Isle of Portland. alkaline compound (lime) that are corrosive to human tissue, silica that is abrasive to skin and causing damage to lung (silicosis), and . chromium that can cause allergic reaction (pulmonary as well as skin). Cement dust affects three main organs, in general, like eyes, lungs and skin causing different types of respiratory, skin and eye diseases. Keeping in view of above facts, it was decided to

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Professional exposure to basaltic rock dust: assessment by the Vibrio fischeri ecotoxicological test

Professional exposure to basaltic rock dust: assessment by the Vibrio fischeri ecotoxicological test

Cement dust inhalation is associated with an increased prevalence of chronic respiratory symptoms and a reduc- tion of ventilatory capacity [10,11]. In a number of risk as- sessment studies [12-17] toxicity tests are associated with chemical data in the framework of tiered decision-making, since bioassays provide ecologically relevant information and are rapid and cost-effective screening tools; such tests are however time-consuming and some test organisms re- quire further culture.

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Flexural Behaviour of RCC Beams Partially Replacing Cement by Dolomite Powder and Sand by Quarry Dust

Flexural Behaviour of RCC Beams Partially Replacing Cement by Dolomite Powder and Sand by Quarry Dust

percentage of Dolomite Powder and Quarry Dust (DP+QD) Concrete are used to determine the compressive strength, split tensile strength and flexural strength of concrete and to check the flexural behavior of RCC beams. It is found that the concrete made of low cost material dolomite powder and waste material quarry dust increases the compressive strength, split tensile strength and flexural strength of concrete when compared to that of normal concrete. It also concluded that the first crack load and ultimate load of dolomite powder and quarry dust reinforced concrete beams increases when compared with normal reinforced concrete beams. From study it is concluded that the low cost material Dolomite powder & Quarry dust can be used in construction works which results in construction cost. By using natural resources the environment is protected.

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Pulmonary Function Testing in Cement Transport Workers at Incheh Borun Border, Northeast of Iran

Pulmonary Function Testing in Cement Transport Workers at Incheh Borun Border, Northeast of Iran

Another research conducted on dust exposure and respiratory health effect in cement produc- tion. A respiratory symptoms questionnaire was completed and pulmonary function tests were carried out on 94 exposed and 54 non exposed workers at a cement factory in the east of Iran. In this study cough, sputum, wheezing and dyspnea were more prevalent among exposed subjects. Exposed workers compared to the unexposed group showed significant reduction in Forced Expiratory Volume in one second (FEV1), Forced Vital Capacity (FVC), and Forced Expira- tory Flow between 25% and 75% of the FVC (FEF25-75%) (P<0.05). There was direct associa- tion between cement dust exposure and func- tional impairment among the cement factory workers(16).

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The strength of the CKD stabilized soil block in- creased with increase in the cement kiln dust content. This is due to the ability of the hydrates to coat a high proportion of the coarse aggregates fraction of the soil and filling of the voids spaces between parti- cles, making the matrix denser. The block specimens with lower CKD content imply a block with higher voids content. High voids are an indication of high porosity block with weak strength. Another implica- tion with low CKD content is that the large proportion of unstabilized soil remains present in the block with little contribution to strength.

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Experimental Study on Concrete Containing Cement Kiln Dust

Experimental Study on Concrete Containing Cement Kiln Dust

A large quantity of dust, commonly known as cement kiln dust (CKD), is produced during the production of Portland cement. The bulk of this dust, mostly with high alkali contents, filled land with a significant financial loss to the local cement industry in terms of the value of raw materials, processing, energy consumption during preprocessing, dust collection and disposal with modern manufacturing techniques, But considering the use of cement on the environmental impact and their production cost, it is required to reduce its usage in the concrete. Hence cement replacement materials are required to attain better concrete properties and at the same time, the use of cement replacement material should be better economically viable. There are many minerals admixtures like fly ash, silica fume, slag, rice husk ash, metakaolin, bentonite slag which are used as cement replaced material and studies have proven their positive impact on the properties of the concrete with few drawbacks.

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STABLISATION OF SOIL USING CEMENT AND BRICK KILN DUST

STABLISATION OF SOIL USING CEMENT AND BRICK KILN DUST

Clayey soil,bricksurkhi and cement is to be mixed thoroughly to have a uniform and homogenous mixture.sample will be prepared using different combinations of brick surkhi and parent soil and different test will be conducted on the prepared samples and result will be compared with originals clay sample

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Experimental Study on Silica Fume & Marble Dust Partially Replaced by Cement and Fine Aggregates

Experimental Study on Silica Fume & Marble Dust Partially Replaced by Cement and Fine Aggregates

Among all materials, concrete is the most widely used in construction industry. From a small house to the large infrastructure projects like dams, tunnels, multi-story buildings etc. concrete is being used. Being a versatile material, it is difficult to replace concrete with other construction materials. The ingredients used for concrete production are cement, fine aggregates, coarse aggregates and water. Each and every material has its important role in overall performance of concrete. During the production of cement, our natural resources are consumed and CO2 is emitted in the atmosphere. Heat of hydration also leads to increase in temperature of environment and this heat is also responsible for cracks in a structure after hardening of concrete. Thus there is a need to find some alternative material to reduce the production of cement and its use in concrete. In concrete fine aggregates also play an important role. Mostly natural river sand is used as fine aggregate in concrete which is becoming costly and scare, thus there is a need to find some alternative material satisfying economical as well as environmental needs. In this work we have used Silica Fume as partial replacement of cement and Marble Dust as partial replacement of natural sand and studied their effect on the performance of M30 concrete.

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STABLISATION OF SOIL USING CEMENT AND BRICK KILN DUST

STABLISATION OF SOIL USING CEMENT AND BRICK KILN DUST

From the above literatures we can concluded that by the addition of brick surkhi stabilizers the property of soil can be improved above literaures shows that by addition of different stabilizers the expansiveness ,swelling shrinkage can bereduced of clayey soil effectively.Brick dust has good potential for use in geotechnical applications of soil is a proven method to save money and money and time on construction project.Brick dust creates stablisatiion creates long term chemical change in unstable clay.

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