Quantitative comparison of chipping- and hydrodemolition-induced microscopic damage evolution in concrete substrates

Tanikura, Izumi; Shintani, Ren; Sainoki, Atsushi; Watanabe, Shinya

doi:10.1016/j.conbuildmat.2017.12.220

Cited by 6 publications

(1 citation statement)

References 28 publications

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“…It is rather difficult to use mechanisms (hydraulic hammers) due to work conditions (up to 18-22 m high vertical surfaces), and the necessity to minimize impact loads on concrete. To do the work, scaffolding is erected in a pumped out lock chamber to the whole wall height, and concrete is demolished in tiers [4,5]. Around the installed scaffolding, to their total height, a transparent enclosure (pavilion) is erected.…”

Section: Discussionmentioning

confidence: 99%

Application of environmentally friendly concrete demolition techniques in the repair of shipping locks

Bazanov

2019

E3S Web Conf.

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The paper analyzes the traditional mechanic technique of concrete demolition and the promising hydro demolition techniques from viewpoint of waterworks operators. The mechanical concrete demolition technique using chisel hammers is immediately available for the use and relatively cheap, but it is associated with considerable labor cost, generation of dust and noise. Concrete hydro demolition technique using high-pressure water has much higher productivity and reduces repair completion time, does not damage reinforcement, and ensures good adhesion of new concrete to old concrete. Basic technical characteristics of hydro demolition equipment and its pricing are given. On the basis of the current situation with regard to the estimated regulation and financing of construction projects, including from budgetary funds, the author considered the possibility of using promising methods of removing exposed concrete of lock chamber walls. A comparison was made between the cost and the regulatory and actual labor intensity between the methods of mechanical and hydraulic destruction of concrete. It has been shown that application of the hydraulic demolition technique is constrained by financial capabilities and estimates regulatory requirements. For substantiation of using the concrete hydro demolition techniques, operators need to adjust the regulatory framework for federal assessments.

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Section: Discussionmentioning

confidence: 99%

Application of environmentally friendly concrete demolition techniques in the repair of shipping locks

Bazanov

2019

E3S Web Conf.

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Principal Factors Influencing the Level of Adhesion in Layered Systems Made of Cement Composites

Sadowski

2018

Advanced Structured Materials

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Compressive strength and cracking of composite concrete in hot-humid environments based on microscopic quantitative analysis

Zhu

2019

Construction and Building Materials

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Quantitative comparison of chipping- and hydrodemolition-induced microscopic damage evolution in concrete substrates

Cited by 6 publications

References 28 publications

Application of environmentally friendly concrete demolition techniques in the repair of shipping locks

Application of environmentally friendly concrete demolition techniques in the repair of shipping locks

Principal Factors Influencing the Level of Adhesion in Layered Systems Made of Cement Composites

Compressive strength and cracking of composite concrete in hot-humid environments based on microscopic quantitative analysis

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