scholarly journals Quality-assurance plan and field methods for quality-of-water activities, U.S. Geological Survey, Idaho National Engineering Laboratory, Idaho

1996 ◽  
Author(s):  
L.J. Mann
Keyword(s):  
Quality Assurance ◽  
Geological Survey ◽  
Field Methods ◽  
Quality Of Water

Feasibility of Bentonite as an Internal Curing Agent in Concrete

2020 ◽  
Vol 13 ◽  
Author(s):  
Abhishek Singh ◽  
Ch. L. Phaneendra ◽  
G. S. Saiveer ◽  
Saurabh Chandravanshi ◽  
Udit Sharma ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Economic Feasibility ◽  
Internal Curing ◽  
Curing Agent ◽  
Field Methods ◽  
Curing Conditions ◽  
Quality Of Water ◽  
Point Test

Abstract:: Background: There is a requirement of internal curing especially in areas where water is scarce and where it is difficult to cure concrete due to inaccessibility of site. About five times higher water is consumed in curing than water mixed in making concrete. Furthermore the quality of water that is to be used for these activities is required to be within certain standards. If the requirement of water can be reduced, it becomes both economically and ecologically viable. Objective: Present research is carried out to determine technical and economic feasibility of bentonite as internal curing agent on properties of concrete in the field. Methods: This paper compares the compressive and flexural strength parameters for standard and bentonite infused concrete and whether this can be considered as a suitable addition in concrete. The flexural strength is measured using four point test. Both tests are carried out in accordance with IS codes. Results: There is an increase in compressive strength for both intermittent and air curing of internally cured concrete in comparison to control concrete. Furthermore air curing of internally cured concrete is comparable to intermittent curing of control concrete. Also compressive strength of intermittent curing concrete with bentonite is comparable with the strength obtained by pond curing of control concrete. Conclusions: The results indicate that bentonite can be considered as a viable addition to concrete, especially in cases of air curing. The use of bentonite is thus recommended more so for air curing and intermittent curing conditions.

Reflecting the Sky in Water

2017 ◽  
Vol 3 (1) ◽  
pp. 112-126 ◽  
Author(s):  
Ilaria Cristofaro
Keyword(s):  
The Unconscious ◽  
Related Case ◽  
Quality Of Water ◽  
Fluid Properties ◽  
Phenomenological Perspective ◽  
Auto Ethnography ◽  
The Individual ◽  
Artificial Water ◽  
Land Water

From a phenomenological perspective, the reflective quality of water has a visually dramatic impact, especially when combined with the light of celestial phenomena. However, the possible presence of water as a means for reflecting the sky is often undervalued when interpreting archaeoastronomical sites. From artificial water spaces, such as ditches, huacas and wells to natural ones such as rivers, lakes and puddles, water spaces add a layer of interacting reflections to landscapes. In the cosmological understanding of skyscapes and waterscapes, a cross-cultural metaphorical association between water spaces and the underworld is often revealed. In this research, water-skyscapes are explored through the practice of auto-ethnography and reflexive phenomenology. The mirroring of the sky in water opens up themes such as the continuity, delimitation and manipulation of sky phenomena on land: water spaces act as a continuation of the sky on earth; depending on water spaces’ spatial extension, selected celestial phenomena can be periodically reflected within architectures, so as to make the heavenly dimension easily accessible and a possible object of manipulation. Water-skyscapes appear as specular worlds, where water spaces are assumed to be doorways to the inner reality of the unconscious. The fluid properties of water have the visual effect of dissipating borders, of merging shapes, and, therefore, of dissolving identities; in the inner landscape, this process may represent symbolic death experiences and rituals of initiation, where the annihilation of the individual allows the creative process of a new life cycle. These contextually generalisable results aim to inspire new perspectives on sky-and-water related case studies and give value to the practice of reflexive phenomenology as crucial method of research.

Chất lượng nước ở Bắc Bình dựa trên các kết quả phân tích hóa học và vi sinh

2018 ◽  
Vol 28 (4) ◽  
pp. 484-497
Author(s):  
Phan Thị Kim Văn ◽  
Bùi Trần Vượng
Keyword(s):  
Quality Of Water ◽  
Microbiological Analyses

The quality of water in Bac Binh according to chemical and microbiological analyses

Spatial and Temporal variation analysis of water quality of Hemavathi River, Karnataka, India

2018 ◽  
Vol 6 (9) ◽  
pp. 196
Author(s):  
Santhosh K. M ◽  
S. Prashanth
Keyword(s):  
Water Quality ◽  
Agricultural Runoff ◽  
Spatial And Temporal Variation ◽  
Final Conclusion ◽  
Variation Analysis ◽  
Pollution Load ◽  
Quality Of Water ◽  
Pollution Loading ◽  
Origin Point

Urban development, agricultural runoff and industrialization have contributed pollution loading on the environment.  In this study Hemavathi river water from a stretch from its origin point to its sangama was studied for pollution load by determining parameters of water quality like pH, Alkalinity,  Ca, Mg, Nitrate, TDS, BOD, COD , and the results were compared with WHO and BIS standards to draw final conclusion on the quality of water.

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