The Development of Slurry Seal Design with Ordinary Portland Cement Replacement by Low Calcium Fly Ash

2015 ◽  
Vol 776 ◽  
pp. 24-29 ◽  
Author(s):  
Ary Setyawan ◽  
D. Sarwono ◽  
M.S. Adnan
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Indirect Tensile Strength ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Low Calcium ◽  
Indirect Tensile ◽  
Slurry Seal

Slurry Seal is an impermeable non-structural thin layer that is used for pavement maintenance consisting of a cold laid mixture of asphalt emulsion with continuous graded fine aggregate, mineral filler, water and other added ingredients. Ordinary Portland Cement (OPC) as the main filler in the application of slurry seal. Due to the relatively high cement prices and the pollution control for the environment; it is required to maintain the quality of the slurry by using a combination of OPC and LCFA (Low Calcium Fly Ash). This research was conducted to determine the value of consistency, setting time and indirect tensile strength (ITS) of slurry seal containing LCFA. A consistency testing used to obtain optimum moisture content to produce the sample for the rest of the test. The results show that with the addition of 5% water for pre-wetting and subsequently 10% of water content, the mixture provide appropriate consistency as required by highways standard. The time settings also meet the requirements of highways standard between 15 to 720 minutes for all types of mixtures. The mixture with composition of 50% OPC and 50% LCFA is considered as an ideal mixture at the optimum density value of 1.769 g/cm3, porosity of 9.55% and the indirect tensile strength of 30.99 kPa. It could be concluded that fly ash can be used as OPC partial replacement and enhance the properties on slurry seal application.

Study on Residual Splitting Tensile Strength of HFCC after High Temperature

2011 ◽  
Vol 243-249 ◽  
pp. 5067-5070 ◽  
Author(s):  
Fu Ping Jia ◽  
Yong Cheng ◽  
Yi Bing Sun ◽  
Yin Yu Wang ◽  
Hao Sun
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Fly Ash ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Splitting Tensile Strength ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Splitting Strength ◽  
Ordinary Portland Cement Concrete

This paper presents the results of the splitting tensile strength of high fly ash content concrete (HFCC) after high temperature and analysis the degraded rules of the residual splitting strength subjected to high temperature and the replacements of cement by fly ash. The specimens were prepared with three different replacements of cement by fly ash 30%, 40% and 50% by mass and were tested after exposure to high temperature 250, 450, 550 and 650°C and room temperature respectively, compared with ordinary Portland cement concrete. The results showed that the splitting tensile strength sensitively decreased with the high temperature increased. Furthermore, the presence of fly ash was effective for improvement of the relative strength. The relative residual splitting strength of fly ash concrete was higher than those of ordinary Portland cement concrete except 30% fly ash replacement. Based on the experiments results, the alternating simulation formula to determine the relationship among relative residual strength, high temperature and fly ash replacement is developed by using regression of results, which provides the theoretical basis for the evaluation and repair of HFCC after high temperature.

Properties of Cement Asphalt Emulsion Mortar for Pavement

2013 ◽  
Vol 723 ◽  
pp. 466-473 ◽  
Author(s):  
Jia Chong Du ◽  
Ming Feng Kuo ◽  
J.C. Yeh
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Cement Mortar ◽  
Indirect Tensile Strength ◽  
Engineering Properties ◽  
Fine Aggregate ◽  
Asphalt Emulsion ◽  
Hydraulic Cement ◽  
Indirect Tensile ◽  
Ca Mortar

This study focused on the properties of the cement asphalt emulsion (CA) mortar. The mixtures of the samples were fabricated and allowed them seven, fourteen and twenty eight days for curing before tested by compressive strength, three points flexural test, and indirect tensile strength to probe into their engineering properties. Hydraulic cement mortar samples used as control are analyzed for comparison. The test results show that the compressive strength is hydraulic cement mortar greater than CA mortar; the flexural strength at curing of 28 days is CA mortar greater than hydraulic cement mortar, however, at curing of 7 and 14 days is hydraulic cement mortar greater than CA mortar; and the indirect tensile strength is hydraulic cement mortar greater than CA mortar. The Scanning Electron Microscope (SEM) analysis results show that the Ca (OH2) increased with increases curing time. The CA mortar samples fabricated needs appropriate water for lubrication. Thus, the water absorption of fine aggregate must be concerned. The emulsion asphalt added too much may reduce the strength. In field test, the CA mortar performs very well, especially in workability.

scholarly journals Investigating possibilities for using sea shell on compressive strength properties of concrete

2018 ◽  
Vol 7 (1.8) ◽  
pp. 241
Author(s):  
Kiran Kumar ◽  
Vineetha Anil ◽  
Sara Hamed ◽  
Ruwa Malik
Keyword(s):  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Strength Properties ◽  
Partial Replacement ◽  
Flexural Properties ◽  
Fine Aggregate ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Concrete Materials ◽  
Ordinary Portland Cement Concrete

The reason of this attempt was to demonstrate that seashells can be utilized as a partial replacement for fine aggregate in concrete for enhancing strength properties. Since seashells are widely available everywhere in coastal and seashore areas, and some of the concrete materials cannot be found easily everywhere.  The strategies utilized as a part of this attempt was to replace burnt and crushed seashells with fine aggregate at 10%, 20% and 30% and compare it with each other and the traditional Ordinary Portland Cement concrete regarding mechanical properties following 7 and 28 days. In conclusion, despite the fact that seashells are generally accessible and can be effortlessly gathered from seashore and beach front regions, the process of burning and crushing requires a lot of energy and is tedious. In spite of the fact that the results demonstrated that utilizing 20% seashell to fine aggregate substitution has a somewhat higher in compressive and flexural properties than that of Ordinary Portland Cement concrete.

scholarly journals PCC Constituents Quantification Through Partial Replacement of Fine Aggregate and Cement

2019 ◽  
Vol 8 (3) ◽  
pp. 6426-6429
Keyword(s):  
Global Warming ◽  
Portland Cement ◽  
Quartz Sand ◽  
Ordinary Portland Cement ◽  
Strength Characteristics ◽  
Silica Sand ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Natural Sand ◽  
Compressive And Flexural Strengths

The paper aim is to acknowledge the use of Quartz Sand (silica sand) & Metakaolin in replacement of natural sand and cement. As the natural sand is depleting at an alarming rate due to perpetual mining and on other side the emission of co2 from production of cement causing global warming. The M30 grade is prepared as well as evaluated for strength characteristics viz. split tensile, compressive and flexural. Ordinary Portland cement is replaced with metakaolin at 0,10,20,30,40 and 50%, while the fine aggregate is replaced with Quartz sand at 40% constant by weight. The specimens are casted and tested for split tensile, compressive and flexural strengths after curing for 7,14,28 days.

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