New Bridge Deck Cast onto Corrugated GFRP Stay-in-Place Structural Forms with Interlocking Connections

Fam, Amir; Nelson, Mark

doi:10.1061/(asce)cc.1943-5614.0000229

Cited by 34 publications

(19 citation statements)

References 12 publications

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“…Nelson et al [25] reported 30% increase in deck strength and 73% increase in initial stiffness by using adhesive bonding at the FRP-concrete interface. On the other hand, Fam and Nelson [26] reported that adhesive bonding on corrugated plates used as SIP formwork led to significant increase of stiffness but very little improvement in ultimate strength. Through double shear tests Zhang et al [27] pointed out that the type of adhesive has a great impact in case of adhesive bonding.…”

Section: Introductionmentioning

confidence: 99%

An investigation on bond between FRP stay-in-place formwork and concrete

Goyal

Mukherjee

Goyal

2016

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

An investigation on bond between FRP stay-in-place formwork and concrete

Goyal

Mukherjee

Goyal

2016

Construction and Building Materials

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“…Several studies have been carried out with FRP SIP forms of various configurations. These include flat plates 15 , flat plates stiffened by bonded hollow square sections [16][17][18] , flat plates with T-shaped ribs [19][20][21][22] , thin plates bonded to the bottom of a layer of grid reinforcement 23 , corrugated plates with pin-and-eye interlocking joints 24 , and FRP box section 25 . The studies show a huge potential for the hybrid FRP and concrete construction, where each material is optimally used.…”

mentioning

confidence: 99%

“…The plank is allowed to cure for 2-3 days and then concrete is poured over it. In adhesive bonding, adhesive is applied on the plank and concrete is poured over it within the pot life of adhesive 20,22,24,29,30 . In case of mechanical anchor bonding, FRP or steel rods are used as studs projecting out from the FRP plank to be used as formwork 15 .…”

mentioning

confidence: 99%

“…Since FRPs are designed as thin-walled structural members, stress concentration introduced by the mechanical anchors could be large that leads to premature failure of the section 15 . It has been observed that both aggregate and adhesive bonding systems lead to significant increase in the ultimate load 19,20,22,24,[26][27][28][29][30] . Also, in both these bond mechanisms, adhesive plays a significant role in achieving bonding and hence choice of adhesive can be crucial.…”

mentioning

confidence: 99%

“…Also, in both these bond mechanisms, adhesive plays a significant role in achieving bonding and hence choice of adhesive can be crucial. All the previous studies regarding the bond between FRP stay-in-place formwork and concrete concentrate on the mechanism used for bonding the two materials 19,20,22,24,[26][27][28][29][30] . The studies were performed using only one adhesive without any justification relating to the choice of a particular adhesive.…”

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confidence: 99%

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Pultruded Fibre Reinforced Polymer Planks as Stay-In-Place Formwork for Concrete Structures

Goyal

Mukherjee³

2017

Current Science

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A feasibility study in which a pultruded fibre reinforced polymer (FRP) plank was used as stay-in-place (SIP) form serving as formwork during wet stage and as reinforcement during hardened stage is presented here. First, the strength and stiffness of the FRP plank serving as formwork for concrete casting under construction stage was verified by sand-filling test. Then shear tests were carried out to develop proper bond technique between FRP and concrete, so that they can perform as composite structural member. Thirdly, static tests on beams were conducted to evaluate the load-carrying capacity and failure modes of the proposed hybrid beam. The overall investigation showed the feasibility of using the FRP plank as a SIP formwork.Keywords: Adhesive and aggregate bonding, fibrereinforced polymer, stay-in-place formwork.ONE of the key objectives of construction research is to develop an innovative, economical and efficient method of construction. In recent years the use of composite fibre reinforced polymer (FRP) materials has gained wider acceptance in the civil engineering sector, due to some desirable characteristics such as lightweight, high strength, resistance to corrosion and durability [1][2][3] . FRP composites, as a mature technology, have been widely used to repair/retrofit/reinforce damaged/degraded concrete structures 4,5 , such as steel reinforced concrete (RC) beams or columns by externally bonding FRP sheet(s) onto the surface of substrate concrete structures 6,7 . Developments in the use of FRP in construction have led to the concept of FRP structural stay-in-place (SIP) formwork systems. This is a permanent participating formwork system which is structurally integrated with concrete. It acts as self-supporting formwork during construction, and as structural reinforcement once the concrete hardens. The concept of using FRP composites for structurally integrated SIP formwork maximizes the advantages of both FRP and concrete while simplifying the construction process and reducing construction time and labour cost. Structural system will make appropriate use of FRP in tension and concrete in compression. A significant cost-saving can be achieved using FRP SIP forms, as they reduce labour cost and time related to putting and stripping of conventional formwork. In flexural members, the FRP plank act as primary reinforcement, thus reducing the need for steel reinforcement. [16][17][18] , flat plates with T-shaped ribs [19][20][21][22] , thin plates bonded to the bottom of a layer of grid reinforcement 23 , corrugated plates with pin-and-eye interlocking joints 24 , and FRP box section 25 . The studies show a huge potential for the hybrid FRP and concrete construction, where each material is optimally used. The cost and time effectiveness using SIP formwork promises a great impact on the Indian economy. New FRP profile manufacturing industries using the pultrusion process are now coming up in India. Pultrusion is an economical and continuous method of fabricating FRP profiles of a constant cross-section b...

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