Abrasion Resistance Of Reactive Powder Concrete: The Influence Of Water-To-Cement Ratio And Steel Micro-Fibers

Mechanical properties of reactive powder concrete (RPC) containing fly ash were investigated under different curing regimes (standard and steam curing) in this study. The experimental results indicate that, flexural strength of RPC increased considerably after steam curing, compared to the standard curing. Steam curing had no significant effect on compressive strength of RPC. Increasing the fly ash content improved the flexural strength of RPC under all curing regimes considerably. The compressive strength reached a maximum (103.8MPa) when the fly to ash and cement ratio is 0.3.

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Effect of maximum grain size on value of modulus of rupture reactive powder concrete

MEDIA KOMUNIKASI TEKNIK SIPIL ◽

10.14710/mkts.v26i1.25088 ◽

2020 ◽

Vol 26 (1) ◽

pp. 1-8

Author(s):

Widodo Kushartomo ◽

Dewi Linggasari ◽

Arianti Sutandi

Keyword(s):

Concrete Beam ◽

Aggregate Size ◽

Modulus Of Rupture ◽

Reactive Powder Concrete ◽

Fine Aggregate ◽

Steam Curing ◽

Cement Ratio ◽

Water Cement Ratio ◽

Buckling Failure ◽

Reactive Powder

Modulus of rupture (R) is a measurement of a tensile strengh of a concrete beam. The value of R is affected by the size of fine aggregat grain, the density of the concrete beam and the water-cement ratio. The unit of R is MPa expressing the tensile strength of the concrete beam without reinforcement to withstand a buckling failure. The distance between the supports of the concrete beam should not be less than three times of the height of the beam. In this research the size of the concrete beam speciment was 100 mm x 100 mm x 350 mm, the maximum fine aggregate size was varied (300 µm, 425 µm, and 600 µm) and the water-cement ratio was also varied (0.25, 0.22 and 0,20). All speciments were cured by steam curing and were tested after seven days. The results show that the larger the size of the fine aggregat grain and the higher the water-cement ratio, the smaller the R.

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Study of RPC Mechanical Properties and Anti-Freeze-Thaw Resistance

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.168-170.1742 ◽

2010 ◽

Vol 168-170 ◽

pp. 1742-1748

Author(s):

Yan Zhong Ju ◽

Feng Wang ◽

De Hong Wang

Keyword(s):

Mechanical Properties ◽

Silica Fume ◽

Steel Fiber ◽

Fiber Content ◽

Reactive Powder Concrete ◽

Cement Ratio ◽

Water Cement Ratio ◽

Freeze Thaw ◽

Early Strength ◽

Reactive Powder

To study the mechanical properties of RPC performance and freeze-thaw resistance，through the experimental study discussed the water-cement ratio, silica fume cement ratio, steel fiber content, curing system and other factors on the mechanical properties of reactive powder concrete and anti-freezing properties. Research indicates that many factors in the RPC, the water cement ratio is the most important factor, followed by the silica fume cement ratio, finally the steel fiber content, and curing system for the growth of its early strength also have a greater role.

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