Mechanical properties of roller compacted concrete pavement containing coal waste and limestone powder as partial replacements of cement

Hesami, Saeid; Modarres, Amir; Soltaninejad, Mostafa; Madani, Hesam

doi:10.1016/j.conbuildmat.2016.02.116

Cited by 88 publications

(30 citation statements)

References 31 publications

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“…Based on the results of this part, it is revealed that s-RCCP compacted at various times achieved compressive strengths in the range of 35 MPa to 45 MPa. This range of values is popularly found in many research works on RCCP [23,24,27,28]. This result proved that s-RCCP can be delayed in compaction until 90 min while producing pavements fulfilling the strength requirement both in areas without freeze-thaw conditions (28 MPa) and in areas exposed to freeze-thaw conditions (31 MPa) [29].…”

Section: Compressive Strength Of Rccpsupporting

confidence: 56%

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

Lam

Jaritngam

2018

Sustainability

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This study investigates the effect of delay in compaction on the optimum moisture content and the mechanical propertie s (i.e., compressive strength, ultrasonic pulse velocity, splitting tensile strength, and modulus of elasticity) of roller-compacted concrete pavement (RCCP) made of electric arc furnace (EAF) slag aggregate. EAF slag with size in the range of 4.75-19 mm was used to replace natural coarse aggregate in RCCP mixtures. A new mixing method was proposed for RCCP using EAF slag aggregate. The optimum moisture content of RCCP mixtures in this study was determined by a soil compaction method. The Proctor test assessed the optimum moisture content of mixtures at various time after mixing completion (i.e., 0, 15, 30, 60, and 90 min). Then, the effect of delay in compaction on the mechanical properties of RCCP mixtures at 28 days of age containing EAF slag aggregate was studied. The results presented that the negative effect on water content in the mixture caused by the higher water absorption characteristic of EAF slag was mitigated by the new mixing method. The optimum water content and maximum dry density of RCCP experience almost no effect from the delay in compaction. The compressive strength and splitting tensile strength of RCCP using EAF slag aggregate fulfilled the strength requirements for pavement with 90 min of delay in compaction.

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Section: Compressive Strength Of Rccpsupporting

confidence: 56%

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

Lam

Jaritngam

2018

Sustainability

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“…The use of these materials often results in ecofriendly mixes with better durability and improved long-term mechanical properties [27][28][29][30][31]. In Japan, Portland blast furnace-slag cement (BFS cement) is classified into three categories according to the Japan Industrial Standards (JIS R 5211), i.e.…”

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confidence: 99%

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

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The durability performance of cementitious material is traditionally based on assessing the effect of a single degradation process. However, this study investigates the coupled deterioration properties of mortar incorporating industrial solid wasteground granulated blast furnace slag (BFS) and different mineral admixtures, such as calcium sulfate (CS) and limestone powder (LSP). The combined deterioration properties caused by carbonation and frost damage in the mortar sample were experimentally investigated with respect to accelerated carbonation and freeze-thaw tests. Different degrees of deterioration, i.e. after subjected to 12, 30 and 60 freeze-thaw cycles, were induced in the freeze-thaw tests. The experimental investigation of single degradation revealed that the compressive strength, frost resistance and carbonation resistance decrease as the BFS replacement ratio increases by weight from 0 to 45%. The less amount of CH in the BFS cement leads to the carbonation progress more easily. Moreover, to achieve the same strength as ordinary Portland cement, 2 wt% CS and 4 wt% LSP in the BFS mortar are required. However, the data shows that incorporating LSP into the BFS mortar produces a lower frost resistance. The combined damage tests revealed that different deterioration degrees resulting from 12, 30 and 60 freeze-thaw cycles slightly decreased the carbonation resistance, which is related to the decrease in the inkbottle pore volume due to its water retention characteristics. Simultaneously, the pre-carbonation deterioration could effectively decrease the surface mass scaling of the freeze-thaw and the pore structure undergoes densification due to pre-carbonation.

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“…In this study, the power function as shown in Fig 6 is used for the MOE-compressive strength relationship of NS modifies RCR as recommended by ACI 318-14. For comparison and justification, the relationships are compared with previous studies [21,30]. As shown in Fig 6, the power models are not good models for the compressive strength of RCR due to the low coefficient of determination (R 2 ), this is due to variation in properties of RCR caused by CR and NS.…”

Section: Relationship Between Moe and Mechanical Properties Of Rcrmentioning

confidence: 99%

“…However, no standard developed the MOE/compressive strength relationship for RCC pavement due to limited available literature [21]. In this study, the power function as shown in Fig 6 is used for the MOE-compressive strength relationship of NS modifies RCR as recommended by ACI 318-14.…”

Section: Relationship Between Moe and Mechanical Properties Of Rcrmentioning

confidence: 99%

“…LaHucik, et al [19] incorporated macro fibers of different types to RCC pavement, they found that for an embossing fibers of 48 mm length, elastic modulus increases by 4.4% for 0.2% fiber content and a decreases by 8.2% for 0.4% fiber content, while for smooth fibers of 40 mm length elastic modulus decreases by 4.4% and 3.8% for 0.2% and 0.4% fiber contents respectively, while Yazici, et al [20], found that addition of 0.25% polypropylene fibre to RCC pavement increases its elastic modulus by 5.1%, and addition of 0.5% and 0.75% PP decreases the elastic modulus by 19.3% and 26.3% Respectively. Hesami, et al [21], reported an increase elastic modulus of RCC pavement by 3.3%, 5.5% and 4.7% for partial replacement of 5% cement with coal waste ash (CWA), coal waste powder (CWP), and blend of coal waste ash and limestone (CWA-LS) respectively, while the modulus of elasticity decreased by 17.4%, 12.4% and 14% for 20% cement replacement with CWA, CWP, and CWA-LS respectively.…”

Section: Introductionmentioning

confidence: 99%

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Establishing Relationship Between Modulus of Elasticity and Strength of Nano Silica Modified Roller Compacted Rubbercrete

Mohammed¹

2017

GEOMATE

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ABSTRACT:Roller compacted concrete (RCC) pavement is subjected to repetitive loadings and bending stresses from moving vehicles. Therefore, they are susceptible to cracks due to fatigue. Dowel bars, tie rods, or steel reinforcement cannot be placed on RCC pavement due to the way they are placed, compacted and consolidated, Therefore, all loads and deformations are resisted by the concrete alone. One of the ways of reducing such effect is producing a more durable RCCP that will undergo higher deformation before cracking. This can be done by partially replacing fine aggregate with crumb rubber (CR) in RCC to produce roller compacted rubbercrete (RCR). In this study, RCR was produced by partially replacing fine aggregate with CR at levels 0%, 10%, 20%, and 30% by volume. Nano silica (NS) was then added at 0%, 1%, 2%, and 3% by weight of cementitious materials to mitigate loss in strength, and their effect on modulus of elasticity (MOE) was studied. The MOE of RCR decreases with increase in CR and increases with NS addition. Also at 10% CR the MOE of RCR increases. Conversely, NS decreases the ductile behavior of RCR by making it more rigid. Power function was not suitable for the relationship between MOE and compressive strength of RCR as recommended by ACI 318, therefore linear model was developed.

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Mechanical properties of roller compacted concrete pavement containing coal waste and limestone powder as partial replacements of cement

Cited by 88 publications

References 31 publications

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Establishing Relationship Between Modulus of Elasticity and Strength of Nano Silica Modified Roller Compacted Rubbercrete

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