Effect of Pervious Concrete with Silica Fume under Different Goal Porosities

2021 ◽  
Vol 10 (02) ◽  
pp. 142-151
Author(s):  
杰 肖
Keyword(s):  
Silica Fume ◽  
Pervious Concrete

Influence of silica fume on mechanical and durability of pervious concrete

2020 ◽  
Vol 247 ◽  
pp. 118453 ◽  
Author(s):  
Goran Adil ◽  
John T. Kevern ◽  
Daniel Mann
Keyword(s):  
Silica Fume ◽  
Pervious Concrete

scholarly journals Laboratory Evaluation of Eco-Friendly Pervious Concrete Pavement Material Containing Silica Fume

2018 ◽  
Vol 9 (1) ◽  
pp. 73 ◽  
Author(s):  
Hanbing Liu ◽  
Guobao Luo ◽  
Longhui Wang ◽  
Wensheng Wang ◽  
Wenjun Li ◽  
...  
Keyword(s):  
Silica Fume ◽  
Pervious Concrete ◽  
Laboratory Evaluation ◽  
High Porosity ◽  
Supplementary Cementitious Material ◽  
Freeze Thaw ◽  
Replacement Method ◽  
Concrete Mixtures ◽  
Porosity And Permeability ◽  
Volume Method

Pervious concretes, such as sustainable pavement materials, have great advantages in solving urban flooding, promoting urban ecological balance, and alleviating urban heat island effect, due to its special porous structure. However, pervious concrete typically has high porosity and low strength. The insufficient strength and poor freeze-thaw durability are important factors that restrict its wide application, especially in seasonal frozen areas. Improving the strength and freeze-thaw resistance of pervious concrete will expand its application. Silica fumes, as an industrial by-product waste and supplementary cementitious material, play an important role in improving concrete performance. The objective of this paper was to study the effects of silica fumes on properties of sustainable pervious concrete. Silica fumes were used to replace cement with the equivalent volume method at different levels (3%, 6%, 9%, and 12%). The control pervious concrete and silica fume-modified pervious concrete mixtures were prepared in the lab. The porosity, permeability, compressive strength, flexural strength, and freeze-thaw resistance properties of all mixtures were tested. The results indicated that the addition of silica fumes significantly improved the strength and freeze-thaw resistance of pervious concrete. The porosity and permeability of all pervious concrete mixtures changed little with the content of silica fumes due to the adoption of the equal volume replacement method.

scholarly journals Study on Pervious Concrete by Partial Replacement of Silica Fume and GGBS with Cement and Addition of Glass Fibers

2020 ◽  
pp. 66-71
Author(s):  
V Venkatadurga Raju and V Bhargavi Y Priyanka,
Keyword(s):  
Compressive Strength ◽  
Ground Water ◽  
Silica Fume ◽  
Water Table ◽  
Glass Fibers ◽  
Pervious Concrete ◽  
Fine Aggregate ◽  
Ground Water Table ◽  
Aggregate Content ◽  
Pozzolanic Materials

Pervious Concrete for the pavements proves to be an effective and along- term solution for the universal problem of abnormal decrease of ground water table. Pervious Concrete has a unique mix design and giving special properties to the concrete which makes the concrete porous , allowing water from precipitation and other sources to pass directly through , there by reducing run off volume and increasing ground water table. Inorder to reduce the damage being caused to the environment by the use of cement , inpervious concrete , cement is replaced with pozzolanic materials such as GGBS , silica fume sand to increase strength and durability , glass fibers in stipulated ratio are added to the concrete mixture. In this study ,the mix designs such as M30 and PC30 are considered . The fine aggregate is replaced with coarseaggregate by different ratios like 0% , 5% , 10% ,15%. by adding different pozzolanic matrals like GGBS, silicafume with glassfibers. To find the effectiveness of the use of pozzolancic and glassfibes, compressive strength conducted. The following Conclusions can be summarized by analyzing tests performed on PC specimens. A significant reduction of workability. And A progressive addition in compressive strength by increasing the percentage of fine aggregates and pozzolanic materials in mix. The conclusion of fine aggregate content in the specimen increases the density and increase the pozzolanic materials addition. And addition of silica fume and GGBS in the mixtures improve strength , compressive strength increases even after adding pozzolanic materials. Due to increase of fine aggregate content. For all replacement levels of PC with other mixes goes on decreasing in strength when compared with parent grade ofM30. While comparing with PC with Pozzolanic materials, For 7 days there is a drastic change for same replacement, and for 28 days itshowssimilar trend for 25% pozzolanic concrete and goes on decreasing for strength for compressive strength. For all replacement levels of PC with pozzolanic goes on decreasing in strength when compared with parent grade of M30. Compressive strength slightly increased by adding glass fibers to the allmixes.

scholarly journals The Influence of Aggregate Size and Binder Material on the Properties of Pervious Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Tun Chi Fu ◽  
Weichung Yeih ◽  
Jiang Jhy Chang ◽  
Ran Huang
Keyword(s):  
Mechanical Strength ◽  
Silica Fume ◽  
Cement Paste ◽  
Water Permeability ◽  
Aggregate Size ◽  
Pervious Concrete ◽  
Superior Performance ◽  
Water Permeability Coefficient ◽  
The Difference ◽  
Activated Slag

Specimens were prepared by altering parameters such as aggregate sizes, binder materials, and the amounts of binder used and were subsequently tested by using permeability, porosity, mechanical strength, and soundness tests. The results indicated that the water permeability coefficient and connected porosity decreased as the amount of binder used increased and increased with increasing aggregate size. In the mechanical strength test, the compressive, splitting tensile, and flexural strengths increased as the amount of binder used increased and decreased with the increase of aggregate size. Highly viscous binder enhanced compressive strength, water permeability, and the resistance to sulfate attacks. In the mechanics and sulfate soundness tests, the mix proportion of alkali-activated slag paste used in this study exhibited a superior performance than the Portland cement pervious concrete (the control) did, but the difference in water permeability between the two types of concrete was insignificant. The mix proportions of cement paste containing 20% and 30% silica fume exhibited less mechanical strength than the control did. Moreover, compared with the control, the cement paste containing silica fume demonstrated poor resistance to sulfate attacks, and the difference in the water permeability between such specimen and the control was not noticeable.

Preliminary Study of Fire Damage on Pervious Concrete with Silica Fume and Steel Fiber

2021 ◽  
Vol 880 ◽  
pp. 155-160
Author(s):  
Ming Gin Lee ◽  
Wen Cheng Wang ◽  
Yung Chih Wang ◽  
Yao Tung Hsieh ◽  
Tuz Yuan Huang
Keyword(s):  
Silica Fume ◽  
Steel Fiber ◽  
Groundwater Resources ◽  
Pervious Concrete ◽  
Fire Damage ◽  
Test Results ◽  
Maximum Increase ◽  
Fire Safety Design ◽  
Compressive And Flexural Strengths ◽  
Temperature Exposure

Pervious concrete pavement is a porous urban surface. It could reduce runoff capacity, decrease a storm-water detention, reduce the amount of requiring rain drainage pipes, and let rainwater filter into ground and allow groundwater resources to renew in time. Fire damage, could be one of important factors since European countries have been used pervious concrete in buildings construction. This study was conducted to assess the fire damage on pervious concrete with silica fume and steel fiber. The test results find that pervious concrete with 10% silica fume and 2% steel fibers showed the maximum increase in compressive and flexural strengths by 60% and 23% respectively over the control mix while maintaining adequate permeability. It also shows that the flexural strength of pervious concrete with 10% silica fume and 2% steel fiber could reach 45 kg/cm2 strength specification. The high temperature exposure results find that pervious concrete could hardly be detected any crack at the temperature of 700 °Cor 800°C and fire duration of 2 hours. There is some damage on strength after the fire-attack test, the ratio of the residual strength can range from about 20%~60% and it depends on temperature, steel fiber, and silica fume content. By this study of pervious concrete will be valuable for fire safety design and construction of practice.

Influences of Mineral Admixture on Properties of Porous Pervious Concrete Made of Recycled Aggregates

2014 ◽  
Vol 919-921 ◽  
pp. 1934-1938
Author(s):  
Ping Gong ◽  
Yu Zhou
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Silica Fume ◽  
Permeability Coefficient ◽  
Mineral Admixture ◽  
Pervious Concrete ◽  
Recycled Aggregates

In this study,silica fume and fly ash were used to replace part of cement, the 28-days compressive strength and the permeability coefficient were tested to study influences of mineral admixture on properties of porous pervious concrete made of recycled aggregates.The results show the best effect is to multiplexed mix with fly ash and silica fume, the 28-day compressive strengths of concrete is higher than those single mixed or doesn’t mix any mineral admixture.

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