CONCRETE PAVEMENT STRUCTURE

PROBLEM TO BE SOLVED: To provide a concrete pavement structure capable of reducing influence in disconnection, and capable of also reducing maximum electric power and electric power consumption.SOLUTION: A heating wire 9 of a concrete pavement slab 4 is wired in parallel. A control device 50 controls ON/OFF of electric power supply by selecting first temperature control of paying attention to the snow melting effect or second temperature control of paying attention to the antifreezing effect, and executes the first temperature control in a snowfall, and executes the second temperature control by completion of snow-melting. A power source device 45 respectively supplies electric power to the respective heating wires 9 based on a command of the control device 50. The concrete pavement slab 4 is composed of an upper layer part 8b of high heat conductivity and a lower layer part 8a of low heat conductivity by sandwiching the heating wire 9. A silicate rock crushed stone is used for a coarse aggregate of the upper layer part 8b, and silicate rock crushed sand is used for a fine aggregate. A steel-making slag is used for the coarse aggregate of the lower layer part 8a, and a steel-making slag (water granulation) is used for the fine aggregate. 【課題】断線時の影響を低減し、かつ、最大電力及び消費電力量を低減できるコンクリート舗装構造を提供する。【解決手段】コンクリート舗装版４の電熱線９は並列配線されている。制御装置５０は、融雪効果に着目した第１温度制御または凍結防止効果に着目した第２温度制御を選択し、電力供給のＯＮ／ＯＦＦを制御する。積雪時には第１温度制御を行い、融雪完了により第２温度制御をおこなう。電源装置４５は制御装置５０の指令に基づき各電熱線９それぞれに電力を供給する。コンクリート舗装版４は、電熱線９を挟んで、熱伝導率の高い上層部８ｂと熱伝導率の低い下層部８ａとからなる。上層部８ｂの粗骨材にはけい石砕石を用い、細骨材にはけい石砕砂を用いる。下層部８ａの粗骨材には製鋼スラグを用い、細骨材には製鋼スラグ（水砕）を用いる。【選択図】図４