201231766 六、發明說明： 【發明所展之技術領域】 本發明係關於一種在土木工程中作為輕量填土使用之 長方體形狀之發泡樹脂成形塊（bl〇ck)與其發泡成形機及 該發泡成形機之運轉方法。此外，係關於一種使用該發泡 樹脂成形塊作用輕量填土之輕量填土構造體。 【先前技術】 作為土木工程’尤其作為在軟質地基或崩塌地等進行 填土時之土木工程的一工法，已知有一種使用例如發泡聚 苯乙烯（EPS ’ expanded polystyrene)塊之長方體形狀的發 泡樹脂成形塊作為輕量填土材的輕量填土工法。此工法在 節省地基改良所耗經費、縮短工期、提升耐震性等方面發 揮優異的效果。第11圖係為藉由輕量填土工法施工之單垂 直面填土型輕量填土構造體之一例，其係在頂部已作成既 有道路1的既有斜坡的斜面侧打入Η形鋼2,且在Η形鋼2 與支撐地基3之間堆積EPS塊4作為輕量填土材而形成預 定高度的輕量填土層。之後，在所堆積之EPS塊4上施以 所需要的配置鋼筋5並打上水泥（concrete)成預定厚度來 建構水泥地板6，且將埋設固定於支撐地基3之錨 (anchor)7的前端連結於水泥地板6來提升穩定化。然後， 在水泥地板6上，如通常的土木工程，進行形成由路基8、 瀝青（asphalt)鋪路9等所形成之路層的步驟。除水泥地板 6以外’尚設有中間水泥地板。在此種輕量填土工法中， 會將許多的長方體形狀之發泡樹脂成形塊配置在左右方向 323486 4 201231766 及上下方向來建構輕量填土層，惟一般而言，為了使在左 右及上下方向鄰接之發泡樹脂成形塊彼此相互連結而使之 穩定化，乃使用專利文獻1所揭示的緊固具。 在上述土木工程中所使用之長方體形狀之發泡樹脂成 形塊，通常係將業經預備發泡後的樹脂粒子使發泡性樹脂 粒子預備發泡過之發泡粒子充填於發泡成形機之成形品腔 至（chamber)内，接下來，藉由將蒸氣從形成於腔室周圍之 瘵氣腔室導入於成形品腔室内，使充填於成形品腔室内之 發泡粒子發泡並彼此溶著而成形。 所成形之發泡樹脂成形塊，係以發泡倍數或導熱率等 在塊整體儘量均勻為理想。因此，提出一種依成形面來調 整將蒸氣供給至發泡成形模之成形品腔室内之蒸氣供給孔 之開口率及開口面積的發泡成形機，該例係揭示於專利文 獻2及專利文獻3中。在專利文獻2中，在用以形成發泡 聚笨乙烯塊成形體之成形模具中，係將構成成形品室（成形 品腔室）之熱板之蒸氣供給孔之開口率，於熱板的中央部分 形成為較密’而於周緣部分則形成為較稀疏。此外，在專 利文獻3所揭示之發泡樹脂成形塊製造用成形模中，係於 用以製造具有由6個面所包圍之長方體形狀之發泡樹脂成 形塊的成形模中’使具有最大面積之正面成形面及背面成 形面之蒸氣孔開口面積的和，設定成較其他4個側面成形 面之蒸氣孔開口面積的和還少。 [先前技術文獻] [專利文獻] 323486 5 201231766 [專利文獻1]日本特開2005_16〇36號公報 [專利文獻2]日本特開平8_2〇〇35號公報 [專利文獻3]日本特許第417646〇號公報 【發明内容】 [發明所欲解決之課題] 如刖所述’藉由將蒸氣供給至發泡成形機之成形品腔 至之蒸氣供給孔之開口率及開口面積依成形面來調整，可 發泡成形發泡倍數或導熱率等在塊整體中大致均勻化之發 /包樹脂成形塊。然而，發泡成形機的形態，只要是將蒸氣 從周圍的成形面供給至充填於成形品腔室内之預備發泡粒 子的形態，對於位於成形品腔室之中心部之預備發泡粒子 與位於接近成形面之部分的預備發泡粒子，就難以賦予藉 由蒸氣熱所導致之相等的發泡條件，而在發泡成形後的發 泡樹脂成形塊中，無法完全避免在中心部的密度較高（發泡 倍數較小）、而在周壁面區域中則密度較小（發泡倍數較 大）。尤其習知的發泡成形機，係為依各蒸氣腔室連接有i 個蒸軋吹入配管的升> 態，而無法在該蒸氣腔室内調整吹入 於蒸氣腔室内之蒸氣量或壓力’因此極難以將前述之在中 心部與周壁面區域所產生之密度差異予以消除或使之在預 疋的範圍内。 此外，所成形之發泡樹脂成形塊之中心部與周壁面區 域之密度差異，即使是在使用者側所希望之預定範圍内者 之情形下，也可能產生在以相同條件持續發泡成形多數個 時，於其過程中在形成於成形面之蒸氣孔產生局部阻塞， 323486 6 201231766 而令中心部與周壁面區域之密度差異超出預定範圍外之情 形。在習知之發泡成形機中當作業員發現產生此種事態 '時，需要中斷成形作業，進行蒸氣孔的清掃等，故於作業 的連續性方面尚存在有應改善之處。 再者，於使用在中心部與周壁面區域具有規定以上之 密度差異之長方體形狀之發泡樹脂成形塊來進行專利文獻 1所揭示之輕量填土工法時，無法避免在發泡樹脂成形塊 之4周之壁面區域與上下面之中心區域由於承載荷重而導 致在上下方向之變形量（下沉量）產生差異的情形。將發泡 樹脂成形塊在上下方向堆積多階層時，若變形量較大之4 周之壁面區域以在上下方向連續之方式堆積，則在上下面 之中心區域與4周之壁面區域之間會在沉降量產生無法忽 視之大小之差異之虞。為了避免此點，乃需要將鄰接之發 泡樹脂成形塊之角部彼此如專利文獻1所示釘上緊固具來 謀求穩定化，此外，需要以使位於上段之4個發泡樹脂成 形塊之角部位於例如下段之發泡樹脂成形塊之上下面之中 心區域之方式多階層堆積，而在輕量填土工法中對於發泡 樹脂成形塊的堆積需要多加注意。 本發明之課題係在解決如上所述之土木工程中作為輕 量填土使用之長方體形狀之發泡樹脂成形塊所具有的缺 失，更具體而言，本發明之第1課題係提供一種」個發泡 樹脂成形塊中内部密度分布之參差不齊極小之發泡樹脂成 形塊。此外，本發明之第2課題係提供一種用以將該種發 泡樹脂成形塊予以發泡成形之發泡成形機。再者，本發明 7 323486 201231766 之第3課題係提供一種使用4 度分布之參差不齊極小之則述之發泡成形機而將内部密 發泡成形機之運轉方法。包句^旨成形塊予以連續成形之 一種使用上述之發泡樹浐外，本發明之第4課題係提供 構造體。 ^塊作為輕量填土之輕量填土 [解決課題之手段] 本發明之發泡樹脂成形塊工 土使用之縱長為a、橫宽^土木4中作為^里具 々品士支具丄 、句度為c，而縱長ax橫寬b 面之長方體形狀之發泡樹脂成形塊，前述發 泡剔曰成料之密度為a(kg々）時將前述發泡樹脂成 形塊在縱長a方向作an等份、在橫寬b方向作h等份、 在尚度c方向作cn等份（惟an、所獲得之 anxbnxcn個分割塊的密度万均為在（1±〇 〇6)a(kg/V)之 範圍内。 上述發泡樹脂成形塊之分割成anxbnxCn個之各分割 塊的密度冷均為在（l±〇.〇6)<2(kg/m3)之範圍内，而在塊 内部之密度分布之參差不齊極小。因此，在使用此發泡樹 脂成形塊作為輕篁填土時，因為承載荷重所導致上下方向 的變形量（下沉量）在上下面之全區域會大致均勻。因此， 在作為輕量填土作多階層堆積時，即使未充分注意配置於 上下之發泡樹脂成形塊的配置位置進行堆積，輕量填土整 體在水平面方向的下沉量的參差不齊也會變小。此外，結 果堆積時的姿勢會變穩定，因此亦可省略使用專利文獻1 所揭示之緊固具將相鄰接之發泡樹脂成形塊彼此予以緊固 323486 8 201231766 的作業。因此，作為輕量填土工法的施工極為容易。 在本發明之發泡樹脂成形塊中，之所以設為an、bng 3、cn 2 1，係基於藉由將縱長a方向x橫寬b之面，亦即施 工時成為荷載面為普通之塊之最寬的面作至少3等份x3等 份的9分割，於實際使用時作為輕量填土不會產生障礙的 程度下，可獲得無偏差之狀態之内部密度的分布。當然， 只要選擇更大的值作為an、bn、cn的值，内部密度之參差 不齊就會成為更少的發泡樹脂成形塊。依據使用該發泡樹 脂成形塊作為輕量填土之施工現場的環境，選擇適當的 an、bn、cn的值即可。另外，an、bn、cn的值可為相同亦 可為不同。然而，在施工現場中，亦有可能在不將最大面 之縱長a方向X橫寬b之面作為承載荷重之載置面之姿勢下 使用的情形，因此an、bn、cn之值為3以上之相同的值， 會成為較佳態樣。 在本發明之發泡樹脂成形塊中，之所以將密度0設在 (1±0. 06) α之範圍，係基於在經驗上，若超出該範圍，在 作為輕量填土堆積多階層時，會有因為上載荷重所導致之 變形之參差不齊變得無法忽視之大小之虞。 在本發明之發泡樹脂成形塊中，較佳為前述α為l〇(kg /m3)以上、40(kg/m3)以下。經驗上，α未達10(kg/m3) 之發泡樹脂成形塊，以土木工程中之輕量填土而言，會有 對於上載荷重的承受性過小而引起因為歷時性或暫時性的 局部荷重而無法忽視之量的變形（下沉）可能性。此外，α 超過40(kg/m3)之發泡樹脂成形塊，以土木工程中之輕量 9 323486 201231766 填土而言重量過重，會有作為輕量填土無法發揮原來功能 的情形。 在本發明之發泡樹脂成形塊中’較佳為發泡樹脂成形 塊的大小係縱長a為1500mm以上，橫寬b為？〇〇mm以上， 高度c為300mm以上。經驗上’較該尺寸還小尺寸之發泡 樹脂成形塊，在習知之發泡成形機中藉由習知方法進行發 泡成形之情形時，亦少有於土木工程中作為輕量填土使用 時產生成為障礙程度之内部也、度之參差不齊的可能。上述 值雖並不具有臨界的意義’惟本發明人等已有經驗當將尺 寸大致超過縱長15.00ιηηι、橫長b 700腿、高度c 3〇〇mm之 大小的發泡樹脂成形塊以習知之發泡成形機利用習知方法 發泡成形時’會有成形出於土木工程中作為輕量填土使用 時具有成為障礙程度之内部密度之參差不齊之發泡樹脂成 形塊的情形。 本發明之發泡樹脂成形塊’可為藉由擠出發泡所形成 者，亦可為將使發泡性樹脂粒子預備發泡後之預備發泡粒 子在具備成形品腔室與蒸氣腔室之發泡成形機之成形品腔 室内進行模内發泡成形所獲得之發泡樹脂成形塊。以樹脂 而言’係以苯乙烯（styrene)系樹脂為佳，惟亦可為聚丙婦 (polypropylene)之類的烯（olefine)系樹脂、烯與苯乙稀 系樹脂混合或共聚合體之類的樹脂。 本發明亦揭示一種用於將上述之發泡樹脂成形塊予以 模内發泡成形之發泡成形機’其至少具有成形品腔室與蒸 氣腔室’而在前述蒸氣腔室中係連接有複數個蒸氣吹入配 323486 10 201231766 管，且復具備有可依各蒸氣吹入配管控制蒸氣壓及蒸氣流 量的控制手段。 在本發明之發泡成形機中，係於1個蒸氣腔室中連接 有複數個蒸氣吹入配管，再者具備有可控制從蒸氣吹入配 管供給之蒸氣之蒸氣壓及蒸氣流量的控制手段。較佳為在 複數個蒸氣吹入配管中，係分別具備有可控制蒸氣壓及蒸 氣流量的控制手段。 在本發明之發泡成形機中，於發泡成形時，可將經適 當調壓之蒸氣的適當量從蒸氣腔室内之不同的場所送入， 而易於成形密度分布無參差不齊之發泡樹脂成形塊。尤其 在複數個蒸氣吹入配管之各者具備有可控制蒸氣壓及蒸氣 流量之控制手段的發泡成形機中，於發泡成形時，可將條 件不同之2種或2種以上的蒸氣送入至1個蒸氣腔室内， 結果，可將溫度或壓力不同的蒸氣供給至成形品腔室内之 不同的區域。藉此，以將實際的成形品分割成anxbnxcn個 的分割塊，且測量各個密度/3，而以該參差不齊情形作為 資料庫來掌握密度分布的傾向，而且修正密度分布的參差 不齊的方式藉由重複適當調整前述控制手段的操作，而能 確實地成形使上述之anxbnxcn個之分割塊的密度冷均在 (1 ±0. 06) α之範圍内的發泡樹脂成形塊。除藉由控制手段 控制蒸氣壓及蒸氣流量以外，再加上以前述所獲得之資料 庫為依據，來調整前述蒸氣吹入配管之支數或安裝位置， 甚至形成於成形品腔室之成形面之蒸氣孔之開口率或開口 面積，藉此可使内部密度之參差不齊更小的發泡樹脂成形 11 323486 201231766 塊成形。 另外，在本發明之發泡成形機中，亦可在蒸氣腔室内 設置區隔板，而區分為2個以上的區塊，以使從連接於1 個蒸氣腔室之2個以上的蒸氣吹入配管吹入的蒸氣彼此不 會在蒸氣腔室内混合。 藉由使用上述的發泡成形機，且如上所述進行適當調 整前述控制手段等的處理，即得以使anxbnxcn個之分割塊 之密度冷均在（1±0. 06) α之範圍内之發泡樹脂成形塊成 形。然而，當以相同條件連續成形多數個發泡樹脂成形塊 時，無法避免在形成於成形品腔室之成形面的蒸氣孔會產 生局部的阻塞，由此，供給至成形品腔室内之蒸氣的條件 會產生變化而於發泡樹脂成形塊之内部密度分布上產生變 化，而使得數個分割塊的密度yS超出（1±0. 06) α之範圍 外。本發明亦揭示可避免產生該缺失之上述發泡成形機的 運轉方法。 亦即，本發明之發泡成形機之運轉方法係使用本發明 之發泡成形機，將在土木工程中作為輕量填土使用之縱長 a、橫寬b、高度c且縱長ax橫寬b之面成為最大面之密度 a (k g / m3)之長方體形狀之發泡樹脂成形塊予以連續製造 時之發泡成形機之運轉方法，其係在製造1批次（batch) 量之發泡樹脂成形塊之後從其中取樣適當的發泡樹脂成形 塊，且將所取樣之發泡樹脂成形塊在縱長a方向作an等 份、在橫寬b方向作bn等份、在高度c方向作cn等份（惟 an、bn g 3、cn 2 1)，且就所獲得之anxbnxcn個分割塊來 12 323486 201231766 測量各個密度万（kg/m3) ’並將該密度/3與前述密度a(kg /m )作比較，而為使各個密度沒接近密度^，使用各蒸氣 吹入配管所具備之控制手段來調整吹入於蒸氣腔室之蒸氣 壓及蒸氣流量之後’開始下一批次之發泡樹脂成形塊之製 造運轉。在此，an、bn、cn的值，係以滿足an、bn23、 cn 2 1之條件為條件，可為相同亦可為不同。 藉由採用上述的運轉方法，即可將從前的成形結果回 饋於目前的形成’而可更容易而且更為確實地將内部密度 分布無參差不齊之高品質的發泡樹脂成形塊予以成形。 本發明亦揭示使用上述之發泡樹脂成形塊作為輕量填 土之輕量填土構造體。更具體而言，係至少具備：輕量填 土 ’在支撐地基上將複數個上述任一項之發泡樹脂成形塊 堆積多階層而構成；及屬於在該輕量填土上直接或透過填 土層施工之道路等之地上構造物。 上述輕量填土構造體係可為前述輕量填土之一側面設 為垂直面之單垂直面填土型輕量填土構造體，亦可為前述 輕量填土之兩侧面設為垂直面之兩垂直面填土型輕量填土 構造體。再者，前述輕量填土之一側面或兩側面亦可為設 為傾斜面之坡面填土型輕量填土構造體。 在任一者的輕量填土構造體中，輕量填土部分均藉由 將本發明之發泡樹脂成形塊予以階層狀堆積來形成，如前 所述，在作為輕量填土作多階層堆積時，即使未充分注竜 配置於上下之發泡樹脂成形塊的配置位置進行堆積，從屬 於在該輕量填土上施工之道路等之地上構造物侧施加上载 323486 13 201231766 荷重時’輕量填土整體在水平面方向的下沉量的參 也會變小，而可獲得無參差沉陷等之穩定之輕量填土 體。 、：^ w 本說明書係包含屬於本案優先權之基礎之日本 利申請案2(ΠΗ16598號之說明書及/或圖式所記載的= 容。 [發明之功效] 依據本發明，係提供一種内部密度分布之參差不齊極 小之在土拉程巾作為輕量填土使狀長方體形狀之ς泡 樹脂成形塊。此外，提供-種用以將該種發泡樹脂成形塊 進行發泡成形之發泡成形機及其運轉方法。再者，提供一 種使用上述發泡樹脂成形塊作為輕量填土使用的輕量填土 構造體，且為施工容易而不會有因為上載荷重所導致之參 差;儿陷專之穩定的輕量填土構造體。 【實施方式】 以下根據實施形態來說明本發明。 第1圖係為用以說明本發明之發泡樹脂成形塊之一例 圖，第1圖（a)係顯示將已發泡成形之狀態的塊，第1圖…） 係顯示分割為多數個的狀態的塊。發泡樹脂成形塊1〇係在 土木工程中作為輕量填土使用者，為縱長3、橫寬b、高度 c之長方體形狀之發泡樹脂成形塊。雖未予以限定，惟在 此例中，發泡樹脂成形塊1 〇係為將苯乙婦系樹脂之預備發 泡粒子進行模内發泡成形所獲得者。前述之縱長a、橫寬 b、高度c亦無特別限制，惟在此例中，縱長a係為1〇〇〇_ 323486 14 201231766 左右，横寬^ ^、 發泡樹月旨成形=為2咖匪左右’高度c係為5G()mm左右。 20kg/m3。 10之整體的费度（表觀密度）α係為例如 另外，在i + 形塊，如第] 程中作為輕量填土使用之發泡樹脂成 規定與讀密;^所示，通常係依密度分級為4個等級，亦 發泡樹月旨成^應的容許壓縮強度。因此，第1圖所示之 之容許壓始^ 10係為稱為D—2〇者，要求要有50kN/m2 強 。 第1表201231766 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a foamed resin molded block (bl〇ck) having a rectangular parallelepiped shape used as a lightweight fill in civil engineering, and a foam molding machine thereof The operation method of the foam molding machine. Further, it relates to a lightweight earth-filling structure which uses a foamed resin shaped block to act as a lightweight fill. [Prior Art] As a civil engineering process, particularly as a method of civil engineering in filling a soft foundation or a collapsed ground, a rectangular parallelepiped shape using, for example, an expanded polystyrene block is known. A foamed resin shaped block is a lightweight fill method for lightweight fill materials. This method has an excellent effect in saving the cost of foundation improvement, shortening the construction period, and improving the shock resistance. Figure 11 is an example of a single vertical fill-type lightweight fill structure constructed by a lightweight fill method, which is driven into the shape of the slope on the slope of the existing slope on the top of the existing road 1. Steel 2, and an EPS block 4 is deposited between the crown steel 2 and the support foundation 3 as a lightweight earth fill material to form a lightweight fill layer of a predetermined height. Thereafter, the required reinforcing bars 5 are applied to the stacked EPS blocks 4, and concrete is concreted to a predetermined thickness to construct the concrete floor 6, and the front end of the anchor 7 fixed to the supporting foundation 3 is attached. Stabilized on the concrete floor 6 to improve stability. Then, on the concrete floor 6, as in usual civil engineering, a step of forming a road layer formed by the roadbed 8, the asphalt paving 9, and the like is performed. In addition to the concrete floor 6, there is still an intermediate cement floor. In this lightweight filling method, a plurality of rectangular parallelepiped foamed resin molded blocks are placed in the left and right direction 323486 4 201231766 and the vertical direction to construct a lightweight fill layer, but in general, in order to The foamed resin molded blocks adjacent to each other in the vertical direction are connected to each other and stabilized, and the fastener disclosed in Patent Document 1 is used. The foamed resin molded block having a rectangular parallelepiped shape used in the above-mentioned civil engineering is usually formed by molding the foamed particles in which the foamed resin particles are preliminarily foamed by the resin particles after preliminary foaming. In the chamber, next, the vaporized particles filled in the molded chamber are foamed and dissolved by introducing vapor from the helium chamber formed around the chamber into the molded chamber. And formed. The formed foamed resin molded block is preferably as uniform as possible in the entire block as a foaming ratio or a thermal conductivity. Therefore, a foam molding machine for adjusting the aperture ratio and the opening area of the vapor supply hole in the molded product chamber of the foam molding die according to the molding surface has been proposed. This example is disclosed in Patent Document 2 and Patent Document 3. in. In Patent Document 2, in the molding die for forming a foamed polystyrene block molded body, the opening ratio of the steam supply hole of the hot plate constituting the molded article chamber (molded product chamber) is applied to the hot plate. The central portion is formed to be denser and the peripheral portion is formed to be sparse. Further, in the molding die for producing a foamed resin molded block disclosed in Patent Document 3, the molding die for producing a foamed resin molded block having a rectangular parallelepiped shape surrounded by six faces is made to have the largest area. The sum of the vapor opening areas of the front forming surface and the back forming surface is set to be smaller than the sum of the vapor opening areas of the other four side forming surfaces. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. SUMMARY OF THE INVENTION [Problem to be Solved by the Invention] As described in the above description, the opening ratio and the opening area of the vapor supply hole to the molding cavity of the foam molding machine can be adjusted by the molding surface. A foamed/molded resin molded block which is substantially uniform in the entire block, such as a foaming molding expansion ratio or a thermal conductivity. However, the form of the foam molding machine is such that the vapor is supplied from the peripheral molding surface to the preliminary foamed particles filled in the cavity of the molded product, and the preliminary foamed particles are located at the center of the molded product chamber. It is difficult to impart equal foaming conditions due to vapor heat to the preliminary expanded particles near the forming surface, and in the foamed resin molded block after foam forming, the density at the center portion cannot be completely avoided. It is high (the foaming ratio is small), and in the peripheral wall surface area, the density is small (the foaming ratio is large). In particular, a conventional foam molding machine has a state in which i of the vapor deposition pipes are connected to each vapor chamber, and the amount of steam or pressure blown into the vapor chamber cannot be adjusted in the vapor chamber. 'It is therefore extremely difficult to eliminate or make the aforementioned difference in density between the central portion and the peripheral wall surface region within the range of the pre-tanning. Further, the difference in density between the central portion and the peripheral wall surface region of the formed foamed resin molded block may be caused by continuous foam forming under the same conditions even in the case of a predetermined range desired by the user side. At this time, in the process, a partial blockage occurs in the vapor hole formed in the forming surface, 323486 6 201231766, and the difference in density between the central portion and the peripheral wall surface region is outside the predetermined range. In the conventional foam molding machine, when the worker finds such a state of occurrence, it is necessary to interrupt the forming operation and perform the cleaning of the steam holes, and the like, there is still room for improvement in the continuity of the work. In the case of using the foamed resin molded block having a rectangular parallelepiped shape having a density difference of a predetermined value or more in the central portion and the peripheral wall surface region, the lightweight filling method disclosed in Patent Document 1 cannot be avoided. In the four-week wall area and the upper and lower center areas, the amount of deformation (sinking amount) in the vertical direction is different due to the load bearing. When the foamed resin molded block is stacked in a plurality of layers in the vertical direction, if the wall surface region having a large deformation amount for four weeks is stacked so as to be continuous in the vertical direction, it will be between the upper and lower central regions and the four-week wall surface region. There is a difference in the size of the settlement that cannot be ignored. In order to avoid this, it is necessary to stabilize the corner portions of the adjacent foamed resin molded blocks by fastening the fasteners as shown in Patent Document 1, and further, it is necessary to form the four foamed resin molded blocks located in the upper stage. The corner portion is multi-layered in such a manner as to be located in the central portion of the lower portion of the foamed resin molded block in the lower stage, and it is necessary to pay attention to the accumulation of the foamed resin molded block in the lightweight earth filling method. The problem of the present invention is to solve the problem of the foamed resin molded block having a rectangular parallelepiped shape used as a lightweight fill in the civil engineering as described above, and more specifically, the first object of the present invention is to provide a A foamed resin molded block in which the internal density distribution of the foamed resin molded block is extremely small. Further, a second object of the present invention is to provide a foam molding machine for foam molding a foamed resin molded block. Further, the third object of the present invention is to provide a method for operating an internal dense foam molding machine using a foam molding machine having a very small unevenness in a 4-degree distribution. The fourth problem of the present invention is to provide a structure, in addition to the above-described foaming tree. ^Block as lightweight fill for lightweight fill [Means for Solving the Problem] The foamed resin molded block of the present invention has a length of a, a width, and a width of the soil. a foamed resin molded block having a rectangular shape and a degree of c, and a longitudinally long ax transversely wide b-plane, wherein the foamed resin molded block is longitudinally formed when the density of the foamed green material is a (kg 々) The length a direction is an aliquot, h is aliquoted in the width b direction, and the cn aliquot is in the c direction (only an, the obtained density of the anxbnxcn segment is 10,000 (1 ± 〇〇 6) In the range of a (kg/V), the density of each of the divided blocks of the above-mentioned foamed resin molded block divided into anxbnxCn is cold (1 ± 〇. 〇 6) < 2 (kg / m3) Inside, the density distribution inside the block is extremely small. Therefore, when the foamed resin molded block is used as the light-filled landfill, the amount of deformation (sinking amount) in the up-and-down direction is caused by the load bearing weight. The whole area will be roughly uniform. Therefore, when it is used as a lightweight fill for multi-layer accumulation, even if the foaming resin disposed on the upper and lower sides is not sufficiently paid attention to When the arrangement position of the blocks is piled up, the unevenness of the amount of sinking of the lightweight fill material in the horizontal direction is also small. Further, the posture at the time of stacking becomes stable, and thus the use of Patent Document 1 can be omitted. The fastening tool fastens the adjacent foamed resin molding blocks to each other in the work of 323486 8 201231766. Therefore, the construction as a lightweight earth filling method is extremely easy. In the foamed resin molding block of the present invention, the reason is An, bng 3, and cn 2 1 are based on at least 3 equal parts x3 aliquots by the surface of the longitudinal direction a-direction x transverse width b, that is, the widest surface of the normal load block at the time of construction. The 9-segmentation, in the actual use, as a light-filled soil does not cause obstacles, the distribution of the internal density in the state of no deviation can be obtained. Of course, as long as a larger value is selected as the value of an, bn, cn, When the internal density is uneven, it becomes a smaller foamed resin molded block. According to the environment of the construction site where the foamed resin molded block is used as a lightweight fill, an appropriate value of an, bn, and cn can be selected. In addition, an, bn, cn However, in the construction site, it is also possible to use the surface of the maximum surface length a direction X width b as the load bearing surface. In the foamed resin molded block of the present invention, the density 0 is set in the range of (1±0. 06) α, and the same value of bn and cn is the same. Based on experience, if it exceeds this range, when multiple layers are piled up as lightweight fill, there will be a size that cannot be ignored due to the unevenness of the deformation caused by the upper load. In the resin molded block, it is preferable that the α is 10 〇 (kg / m 3 ) or more and 40 (kg / m 3 ) or less. In experience, a foamed resin molded block with an α of less than 10 (kg/m3), in the case of lightweight fill in civil engineering, may have a small tolerance to the upper load due to diachronic or temporary localization. The possibility of deformation (sinking) of the amount that cannot be ignored. In addition, the foamed resin molded block having an α of more than 40 (kg/m3) is too heavy in terms of lightweight 9 323486 201231766 in civil engineering, and it may not function as a lightweight fill. In the foamed resin molded block of the present invention, it is preferable that the size of the foamed resin molded block is 1500 mm or more in length and the horizontal width b is ? Above 〇〇mm, the height c is 300mm or more. The foamed resin molded block which is empirically smaller than this size is rarely used as a lightweight fill in civil engineering when it is foamed by a conventional method in a conventional foam molding machine. At the time, there is a possibility that the degree of the obstacle is internal and the degree is uneven. The above-mentioned value does not have a critical meaning. However, the inventors of the present invention have an experience in forming a foamed resin molded block having a size substantially exceeding a length of 15.00 ηηηι, a horizontal length b of 700 legs, and a height c 3 〇〇 mm. When the foam molding machine is known to be foamed by a conventional method, there is a case where a foamed resin molded block having an uneven internal density which is used as a lightweight filler in civil engineering is formed. The foamed resin molded block of the present invention may be formed by extrusion foaming, or may be a preliminary foamed particle obtained by preliminary foaming the expandable resin particles in a molded product chamber and a vapor chamber. A foamed resin molded block obtained by in-mold foam molding in a molded product chamber of a foam molding machine. In the case of a resin, a styrene resin is preferred, but it may be an olefine resin such as polypropylene, a mixture of an alkene and a styrene resin, or a copolymer. Resin. The present invention also discloses a foam molding machine for in-mold foam molding of the above-mentioned foamed resin molded block, which has at least a molded product chamber and a vapor chamber, and is connected to the vapor chamber in plural The steam is blown into the 323486 10 201231766 pipe, and the control means for controlling the vapor pressure and the vapor flow rate according to each steam blowing pipe is provided. In the foam molding machine of the present invention, a plurality of vapor injection pipes are connected to one vapor chamber, and a control means for controlling the vapor pressure and vapor flow rate of the steam supplied from the steam injection pipe is provided. . Preferably, the plurality of vapor insufflation pipes are provided with control means for controlling the vapor pressure and the vapor flow rate. In the foam molding machine of the present invention, at the time of foam molding, an appropriate amount of appropriately conditioned vapor can be fed from different places in the vapor chamber, and the density of the molded density distribution can be easily formed without unevenness. Resin shaped block. In particular, in a foam molding machine in which a plurality of steam insufflation pipes are provided with a control means for controlling the vapor pressure and the vapor flow rate, two or more types of vapors having different conditions can be supplied during the foam molding. The gas is introduced into one vapor chamber, and as a result, steam having a different temperature or pressure can be supplied to different regions in the molded chamber. In this way, the actual molded article is divided into a plurality of divided blocks of anxbnxcn, and each density/3 is measured, and the unevenness is used as a database to grasp the tendency of the density distribution, and the density distribution is corrected. By repeatedly adjusting the operation of the above-described control means, it is possible to reliably form a foamed resin molded block in which the density of the above-mentioned anxbnxcn divided blocks is cold in the range of (1 ± 0.06) α. In addition to controlling the vapor pressure and the vapor flow rate by the control means, the number of the steam insufflation piping or the mounting position is adjusted based on the database obtained as described above, and is even formed on the forming surface of the molded product chamber. The opening ratio or the opening area of the vapor hole, whereby the foamed resin having a smaller internal density can be formed into a block shape. Further, in the foam molding machine of the present invention, a partition plate may be provided in the vapor chamber to be divided into two or more blocks so that two or more vapors connected to one vapor chamber are blown. The vapors blown into the piping are not mixed with each other in the vapor chamber. By using the above-described foam molding machine and appropriately adjusting the above-described control means and the like as described above, it is possible to make the density of the anxbnxcn divided blocks cold in the range of (1 ± 0.06) α. The foamed resin molded block is formed. However, when a plurality of foamed resin molded blocks are continuously formed under the same conditions, it is unavoidable that local clogging occurs in the vapor holes formed in the forming surface of the molded product chamber, thereby supplying steam to the molded product chamber. The condition changes to vary in the internal density distribution of the foamed resin shaped block, so that the density yS of several divided blocks exceeds the range of (1±0.06) α. The present invention also discloses a method of operating the above-described foam molding machine which can avoid the occurrence of such a deficiency. That is, the operation method of the foam molding machine of the present invention uses the foam molding machine of the present invention to use the longitudinal length a, the lateral width b, the height c, and the longitudinal length ax transversely used as a lightweight fill in civil engineering. The operation method of the foam molding machine in the case where the foamed resin molded block having a rectangular shape of the maximum surface density a (kg / m3) is continuously manufactured, which is produced in the production of one batch (batch) amount After foaming the resin molded block, a suitable foamed resin molded block is sampled therefrom, and the sampled foamed resin molded block is an equal part in the longitudinal direction a direction, bn aliquot in the transverse width b direction, and in the height c direction. Make cn aliquots (only an, bn g 3, cn 2 1), and measure each density 10,000 (kg/m3) for the obtained anxbnxcn partitions 12 323486 201231766 and combine the density/3 with the aforementioned density a (kg / m ) for comparison, and in order to make each density not close to the density ^, use the control means provided by each steam blowing pipe to adjust the vapor pressure and vapor flow rate blown into the vapor chamber - start the next batch The manufacturing operation of the foamed resin molded block. Here, the values of an, bn, and cn are based on the conditions of an, bn23, and cn 2 1, and may be the same or different. By adopting the above-described operation method, it is possible to form a high-quality foamed resin molded block in which the internal density distribution is more easily and more reliably obtained by returning the former forming result to the current formation. The present invention also discloses a lightweight filler structure using the above-mentioned foamed resin molded block as a lightweight fill. More specifically, it is configured to include at least a lightweight fill material in which a plurality of foamed resin molded blocks of any of the above-described ones are stacked in a plurality of layers, and are directly or through the filling on the lightweight fill. Above-ground structures such as roads for soil layer construction. The lightweight fill structure system may be a single vertical fill type lightweight fill structure with one side of the lightweight fill as a vertical surface, or may be a vertical surface on both sides of the lightweight fill. Two vertical fill-type lightweight fill structures. Further, one side or both sides of the lightweight fill may be a slope fill type lightweight fill structure having an inclined surface. In any of the lightweight earth-filling structures, the lightweight-filled portion is formed by hierarchically depositing the foamed resin molded block of the present invention, as described above, as a lightweight fill for multiple layers. At the time of the deposition, even if the placement position of the foamed resin molding block placed on the upper and lower sides is not sufficiently deposited, the load is applied to the ground structure side of the road or the like which is applied to the lightweight fill, and the load is 323486 13 201231766 The amount of sinking of the entire amount of the fill material in the horizontal direction is also small, and a stable lightweight fill body without staggered subsidence or the like can be obtained. This manual contains the contents of the Japanese Patent Application No. 2 (the specification and/or the drawings of ΠΗ16598). [Effect of the Invention] According to the present invention, an internal density is provided. The unevenness of the distribution is the foaming resin forming block in the shape of a rectangular parallelepiped which is made of a light-filled soil. In addition, a foam for foam forming of the foamed resin molded block is provided. A molding machine and a method of operating the same. Further, there is provided a lightweight earth-filling structure which is used as a lightweight fill using the above-mentioned foamed resin molded block, and which is easy to construct without being uneven due to heavy load; The present invention will be described below with reference to an embodiment. Fig. 1 is a view showing an example of a foamed resin molded block of the present invention, and Fig. 1 (a) The system displays a block in a state in which it has been foamed, and Fig. 1 is a block in which a plurality of states are divided. The foamed resin molded block 1 is a foamed resin molded block having a rectangular parallelepiped shape of a length of 3, a width b, and a height c as a lightweight fill user in civil engineering. Although it is not limited, in this example, the foamed resin molded block 1 is obtained by in-mold foam molding of the preliminary foaming particles of the styrene-based resin. The longitudinal length a, the lateral width b, and the height c are not particularly limited. However, in this example, the longitudinal length a is 1〇〇〇_323486 14 201231766, and the width is ^^, and the foaming tree is formed. It is approximately 2G () mm around height 2 c. 20kg/m3. The overall cost (apparent density) α of 10 is, for example, additionally, in the i + block, as in the process of the process, the foamed resin used as a lightweight fill is defined and read dense; According to the density, the grade is 4 grades, and the foaming tree is also required to be the allowable compressive strength. Therefore, the allowable pressure starting point shown in Fig. 1 is called D-2, and it is required to have a strength of 50 kN/m2. Table 1
D-20 D-25 D-30 16 — 20 25 30 35 ------ 50 70 90 密度 (kg/ni3) 容許壓縮強度 (kN/V) 如前所、成 品中，從 ^ ’在發泡樹脂成形品，尤其在模内發泡成形 ^觖能从於充填於成形品腔室之預備發泡粒子供給蒸氣 '來看，無法避免在内部密度產生參差不齊。 ^ P’H完全避免在中心、部密度較高， 度相對較,j 而在表面部則密 ^ 因此’以習知之成形法發泡成形時，即使被 之整體的表觀密度為2〇kg/m3的塊，於測量塊之 内口卩进度的情形下’也會產生中心部成為22kg/m3左右， 而表面部成為18kg/m3左右。此情形下，將容許壓縮強度 設计為50kN/m2達極限時，密度為i8kg/m3之部分的壓縮 強度會不足。因此’實際上強度充足的部分，會承受強度 15 323486 201231766 不足之部分的荷重。因此，依據強度充足之部分與強度不 足之部分之比例的不同，對於強度充分的部分也會造成負 荷。 本發明之發泡樹脂成形塊10，係在使内部密度之參差 不齊程度為極小者，可平均地承受前述的荷重。亦即，依 據本發明，可提供一種作為輕量填土使用時所要求之設計 上的容許壓縮強度為50kN/m2時，即使實際使用容許壓縮 強度為50kN/m2之D-20的製品，於施工後亦不會產生參差 沉陷等之問題的發泡樹脂成形塊10。 在本發明之發泡樹脂成形塊10中，内部密度之參差不 齊程度極小之點，係驗證如下。亦即，從使用之後說明之 發泡成形機所成形之多數個發泡樹脂成形塊之群，將1個 或1個以上的發泡樹脂成形塊10抽出作為樣本。如第1圖 (b)所示，將第1圖（a)所示之經抽出之發泡樹脂成形塊10 在縱長a方向作an等份、在橫寬b方向作bn等份、在高 度c方向作cn等份，以獲得anxbnxcn個的分割塊10p。 另外，在第1圖所示之例中，an係為5，bn係為8，cn係 為5，係分割為5x8x5=200(個）的分割塊10p。再者，各分 割塊10ρ係成為240mmx450mmxl80mm之長方體形狀的塊。 另外，如前所述，an、bn、cn只要是an、bn g 3、cn 的值即可，如圖所示，該等可為不同的值，亦可為相 同的值（例如an、bn、cn均為3)。 測量以該方式分割之各分割塊10p的密度/3，將該值 與發泡樹脂成形塊10整體的密度α作比較。再者，所有分 16 323486 201231766 割塊10p之密度/3為（l±0.06)a(kg/m3)之範圍内時，該 發泡樹脂成形塊10係設為本發明之範圍内之發泡樹脂成 形塊10。在此例中，發泡樹脂成形塊10整體的密度α係 為20kg/m3,而所有分割塊1 Op之密度冷為21. 2至18. 8kg /m3之範圍内時，就成為本發明之範圍内之發泡樹脂成形 塊10。 在200個分割塊10p之中，包含有密度/3超出（1±0. 06) a (kg/m3)之範圍者時，該發泡樹脂成形塊10就成為超出 本發明之範圍者。 在使用發泡成形機使發泡樹脂成形塊連續成形時，通 常每一重複成形循環就會暫時增加蒸氣孔之局部的阻塞， 由於此點，所成形之發泡樹脂成形塊之内部密度的分布亦 會逐漸變化。即使在最初為了獲得滿足本發明之條件之發 泡樹脂成形塊10而設定了蒸氣的供給平衡，隨著進行重複 成形100個、200個，蒸氣之供給平衡會因為蒸氣孔的阻 塞而從最初的設定條件產生變化，最終無法避免會成形未 滿足本發明之條件之發泡樹脂成形塊。因此，在成形一定 個數之後，將最後的成形品進行取樣，並對其進行上述的 分割與密度/3的測量，結果滿足發明之條件時，即可推測 至目前為止所成形之發泡樹脂成形塊10係為本發明之範 圍内者。 再者，進行一定個數成形並將最後的成形品取樣，再 對其進行上述之分割與密度/3的測量，結果未滿足發明之 條件時，先前所成形之數個發泡樹脂成形塊即為本發明之 17 323486 201231766 範圍外者，因此將範圍外之發賴脂成形_除，並且進 灯成形機之纽孔的清掃，並回到初期的成形條件，再产 進行發泡樹脂成形塊的成形。 & 另外，將在該發泡絲機巾，位於多數 =哪二置之分割塊10p的密度石為容易超出⑽‘ 二範圍者、該超出程度為何種程度、成形幾個 種超出現㈣的資料進倾存，以從該資 =握在㈣發泡成形機成形之發泡樹脂成形塊之密度分 t的ΐ化傾向1後，以其為根據，藉由控制供給至成形 扣腔至内之威的條件，可將本發明之範圍内之發泡樹脂 成形塊10予以發泡成形。 =著說明適用於製造本發明之發泡樹脂成形塊之發泡 成形機及其運轉方法。 第2圖及第3圖係顯示發泡成形機的一例。在此例中， 發泡成形機A1係由第1成形模2〇與第2成形模30所構 成，第2圖⑷係顯示2個模打開的狀態，第2圖⑹係顯 示模關閉的狀態成形模2G係具有成形品腔室21。 成形时腔至21係為由具有多數個蒸氣孔（未圖示）之底熱 板22與4個側熱板23所劃分的長方體形狀。成形品腔室 之外側係作成由頂板24與底板25與4個侧板26所 劃分的蒸氣腔室27。. 在成幵"口腔至21内’係從未圖示之供給裝置充填有預 泡粒子此外’在蒸氣腔室27内，係從未圖示之高溫 向壓蒸氣的產生源經由調壓閥（valve)4{)供給有經過調整 323486 18 201231766 之量的高溫蒸氣。在第2圖、第3圖所示之發泡成形機A1 中，在較調壓閥40前面的蒸氣吹入配管係分歧為2個，從 2處供給蒸氣至蒸氣腔室27内。在與蒸氣腔室27内之各 蒸氣吹入配管相對向的位置中，係分別配置有分散板28， 而供給至蒸氣腔室27内的蒸氣，由於碰撞分散板28，而 會朝沿著底熱板22的方向分散。雖可予以省略，惟在蒸氣 腔室27内，亦可於2個分散板28之間設置適當大小的區 隔板29，以使從各蒸氣吹入配管供給的蒸氣不會混合。 第2成形模30係為可覆蓋形成於第1成形模20之成 形品腔室21的大小，其係由具有多數個蒸氣孔（未圖示） 之封鎖熱板31、及形成為覆蓋該封鎖熱板31之背面側的 箱體32所形成，而箱體32之内部則作成蒸氣腔室33。在 蒸氣腔室33内，亦有從未圖示之高溫高壓蒸氣的產生源經 由調壓閥41而供給經調整之量的高溫蒸氣。在第2成形模 30中，較調壓閥41前面的蒸氣吹入配管亦分歧為2個， 而從2處供給蒸氣至蒸氣腔室33内。在與蒸氣腔室33内 之蒸氣供給口相對向的位置，亦分別配置有分散板34，而 供給至蒸氣腔室33内的蒸氣，由於係與分散板34碰撞， 而會朝沿著封鎖熱板31的方向分散。雖可予以省略，惟在 蒸氣腔室33内亦可於2個分散板34之間設置適當大小的 區隔板35，以使從各蒸氣吹入配管供給的蒸氣不會混合。 雖未圖示，惟發泡成形機A1係在蒸氣吹入配管之各者 具備控制手段其係具備可控制蒸氣壓及蒸氣流量之控制手 段，用以進行流通於調壓閥40、41之蒸氣流量之調整、及 19 323486 201231766 調壓閥40、41之開度的調整。 第4圖係為發泡成形機之另一例，此發泡成形機A2在 調壓閥40、41的前面，蒸氣吹入配管分歧為4個，而在與 各蒸氣吹入配管相對向之位置，係設有4個分散板28、34， 此點與第2圖及第3圖所示之發泡成形機A1有所不同。其 他構成係與發泡成形機A1相同，茲附上相同符號而說明則 予省略。另外，在第4圖中，係省略了視需要設於各分散 板28、34之間的區隔板29、35。 第5圖係為發泡成形機的再另一例示，此發泡成形機 A3係有4支來自未圖示之高溫高壓蒸氣之產生源的蒸氣供 給管，且在各蒸氣供給配管分別設有調壓閥40a至40d、 41a至41d，此點與第4圖所示之發泡成形機A2有所不同。 其他構成係與發泡成形機A2相同，茲賦予相同符號而說明 則予省略。另外，在第5圖中，亦省略了視需要設於各分 散板28、34之間的區隔板29、35。 雖未予以圖式，惟發泡成形機A3係在各蒸氣吹入配管 之各者具備控制手段其係具備可控制蒸氣壓及蒸氣流量之 控制手段，用以進行流通於各調壓閥40a至40d、及調壓 閥41a至41d之蒸氣流量之調整、及該等調壓閥之開度的 調整。 第6圖係為發泡成形機之再另一例，此發泡成形機A4 中，蒸氣腔室27側之4個蒸氣吹入配管係在各調壓閥40a 至40d之下游側進一步分歧為3個而於蒸氣腔室27内開 口，此外，蒸氣腔室33側之4個蒸氣吹入配管亦在各調壓 20 323486 201231766 閥41 a至41 d之下流側進一步分歧為3個而在蒸氣腔室33 内開口’此點與第5圖所示之發泡成形機A3有所不同。其 他構成係與發泡成形機A3相同，茲附上相同符號而說明則 予省略。另外，在第6圖中，係省略了視需要設於各分散 板28、34之間的區隔板29、35。 在發泡成形機A1至A4的任一者中，於發泡樹脂成形 塊10之成形時，係將預定之預備發泡粒子充填預定量在處 於打開狀態之第1成形模20的成形品腔室21内，且於合 模之後’供給預定條件的蒸氣至雙方的蒸氣腔室27、33使 預備發泡粒子發泡及溶著。之後，藉由將模打開，獲得所 希望之發泡樹脂成形塊10。此成形方法係與習知的方法相 同。 ' 將所獲得之發泡樹脂成形塊10，以根據前述第1圖所 說明之方式分割為複數個，以獲得多數個分割塊l〇p。然 後，測量各個的密度。藉此，獲得關於所成形之發泡樹脂 成形塊10之内部密度之參差不齊的資訊。根據所獲得的資 ::藉由適當控制調壓閥40、41以及在更上游侧之蒸氣流 星4來凋整從各蒸氣吹入配管供給至雙方之蒸氣腔室27、 33之蒸氣量與蒸氣壓力，以使該參差不齊成為儘量較小的 值。藉由將此順序重複數次，即可獲得内部密度分布之參 差不齊控制為±6%以下的發泡樹脂成形塊1〇。 * 在圖示例示之發泡成形機A1至A4中，供給至雙方之 氣腔至27、33之蒸氣吹入配管的數量愈多，則愈可更精 緻地控制蒸氣朝成形品腔室21内吹出的條件，而可獲得内 21 323486 201231766 部密度分布之參差不齊更小的發泡樹脂成形塊10。考量發 泡樹脂成形塊10所要求之内部密度分布之均勻化程度、與 發泡成形機及其運轉所需的經費，只要使用具備適當數量 之蒸氣吹入配管的發泡成形機A1至A4即可。 此外，無論何種發泡成形機，都無法避免隨時間經過 而產生形成於雙方之蒸氣腔室27、33之蒸氣孔的阻塞，且 蒸氣供給條件亦會經時性變化。因此，即使以上述之方式 獲得所希望的蒸氣供給條件，而使所希望的發泡樹脂成形 塊10成形，也會逐漸使超出初期條件的發泡樹脂成形塊 10成形。 因此，在製造100個或200個左右之1批次量之發泡 樹脂成形塊之後，從當中取樣適當的發泡樹脂成形塊，且 將所取樣之發泡樹脂成形塊，如前所述，在縱長a方向作 an等份、在橫寬b方向作bn等份、在高度c方向作cn等 份，且就所獲得之anxbnxcn個的分割塊測量各個的密度冷 (kg/m3)，且將該密度/3與初期設定之密度a (kg/m3)作比 較，為使各個密度)S接近前述密度α，使用各蒸氣吹入配 管所具備之控制手段，將吹入於各蒸氣腔室27、33之蒸氣 壓及蒸氣流量進行調整，之後，再開始下一批次之發泡樹 脂成形塊的製造運轉之運轉方法的採用，係極為理想者。 此時，藉由在各蒸氣腔室27、33中之各分散板28、 34之間配置區隔板29、35，即可避免在各蒸氣腔室27、 33中從各蒸氣吹入配管供給之蒸氣混合，因此易於獲得與 初期條件一致的發泡樹脂成形塊10。 22 323486 201231766 [實施例] 接著藉由實施例與比較例來說明本發明之發泡樹脂成 形塊。第7圖係顯示在實施例與比較例中所使用之發泡樹 脂成形塊。茲準備密度α為19. 7kg//m3之長方體形狀之3 個發泡樹脂成形塊X、Y、Z。另外，發泡樹脂成形塊X、Y、 Z的成形，係使用相同的發泡成形機’藉由調整供給至蒸 氣腔室内之蒸氣的量與溫度、壓力’如後述的第2表所示’ ·> 使内部密度分布的參差不齊有所不同。 具體而言’發泡樹脂成形塊X係使用前述第2圖及第 3圖所示形態之發泡成形機且為不具備區隔板2 9的發泡成 形機，而成形條件係以蒸氣壓1 kg/cm2、加熱時間20秒、 模具溫度120度來成形。發泡樹脂成形塊Y係使用相同的 發泡成形機，成形條件係以蒸氣壓〇. 7kg/cm2、加熱時間 35秒、模具溫度115度來成形。發泡樹脂成形塊z使用前 述第6圖所示之形態的發泡成形機，亦即使用整體之形狀 係與成形發泡樹脂成形塊X之發泡成形機相同，惟係使用 在各個調壓閥40a至40d、41a至41d之下游側使各蒸氣吹 入配管進一步分歧為3個而使之在蒸氣腔室内開口之發泡 成形機’而成形條件則係以蒸氣壓在調壓閥40a、41a為 〇· 5 kg/cm2、在調壓閥 40b、41b 為 〇. 6kg/cm2、在調壓 閥 40c、41c 為 0. 7kg/cm2、在調壓閥 4〇d、41d 為 0. 5kg /cm2、加熱時間40秒、模具溫度ii5度下形成。 將各發泡樹脂成形塊最廣的面作9等份，如第7圖所 示對各分割塊賦予A至I的編號。亦即，將所有發泡樹脂 23 323486 201231766 成形塊χ、γ、ζ，右铣且 ., MM 方向作3等份、在橫寬匕方向 Τ缺/ »阿度〇方向作1等份而獲得9個分割塊Α至 第j量各分割塊㈣度其結果如帛2表所示。 塊 X : 19. 7 A ： 18. 5 D ： 20. 〇 B ： 19. 0 E ： 22. 0 C : 18. 5 F ： 20. 〇 密度（kg/m3) 一 i 4 Y ： 19. 7 塊 Z : 19‘ 7 19. 5 - A 19. 0 D : 19. 5 G ： 19. 5 A : 19. 5 D ： 19. 5 G ： 19. 5 20. 〇 B 19. 5 E ： 21. 5 H ： 20. 〇 B ： 19. 5 E ： 20. 5 H : 20. 5 19. 5 c 19. 0 F ： 19. 5 I : 19. 5 C : 19. 5 F ： 19. 5 I ： 19. 5 X之全分割塊之中，最大密度係為塊E的 S 最小也、度係為塊c的18. 5kg/m3，而距離在 :刀。m:之整體密度19 7kg/m3之最大參差不齊係為 +2_ 3kg/m，亦即 1〇%。 (2)在3塊γ之全分割塊之中，最大密度係為塊e的 g// 最小岔度係為塊A、C的19. Okg/m3，而距離 在王刀割塊+之整體密度19. 7kg/m3之最大參差不齊係為 + 1.8kg/m3，亦即 9%。 ()在3兔Z之全分割塊之中，最大密度係為塊e的 g/m最小密度係為其他塊的19. 5kg/m3，而距離 在王刀d塊中之整體密度19. 7kW之最大參差不齊係為 +〇.8kg/m3，亦即 4%。 因此’塊Z係為分割塊A至I之密度点均為於塊z之 整體&度19· 7( α )x(i±〇· Q6)(kg/m3)之範圍内，而塊z係 為本發明之範圍内者，相當於實施例。 323486 24 201231766 [實驗1]初期變異量測量 接者依據日本EPS 土木工法的基準書，將前述d_2〇(規 格19.0kg/m至21.5kg/m)之容許壓縮應力之5〇kN/m2 之重物載置於各個分割塊’且測量其變異結果如 第3表所示。. 第3表 變異量（mm) 兔 X : 5. 3r J 塊 Y : 5· 3 塊 Z : 5. 2 A ： 5. 9 D ： 5. 1 G ： 5. 3 A ： 5. 6 D ： 5. 5 G ： 5. 3 A ： 5.4 D ： 5. 3 G ： 5. 3 B ： 5. 6 E ： 4. 0 Η ： 5. 0 B ： 5. 3 E ： 4. 3 H ： 5. 0 B ： 5.2 E ： 4. 6 H ： 4. 5 C ： 6. 0 F ： 5. 0 I ： 5. 4 C ： 5. 7 F ： 5. 2 I : 5.4 C : 5· 3 F : 5.4 I ： 5. 4 如剷所述’在塊X中’最大有+2. 3kg/m3(10%)的密度 參差不齊。結果，在各分割塊最大雖有2·〇jijm左右變異量 的差異，但在本發明品之塊Z中，密度參差不齊最大則小 至+0. 8kg/m (4%)，結果，在各分割塊之變異量的差異係 小至1. 0匪左右。 由此觀之，各分割塊之密度万與整體之密度α之差異 之參差不齊較小之發泡樹脂成形塊（塊ζ)，與參差不齊相 對較大之塊（塊X、Υ)作比較，可得知在載置面整體中變異 量的差異較小。由此觀之，證實了本發明之發泡樹脂成形 塊的優異性。 [實驗2]潛變（creep)變形量測量 針對實驗1之各分割塊，進一步在載置重物下放置1〇〇 天，測量長期潛變變形量。結果如第4表所示。 323486 25 201231766 第4表 潛變變形量（mm) 塊 X : 9. 7 塊 Y : 8. 7 塊 Ζ : 7. 8 A ： 13. 0 D ： 9. 0 G ： 10. 0 A ： 11.0 D ： 8. 0 G : 8. 5 A · 9.0 D ： 7. 5 G ： 8. 0 B ： 11.0 E ： 6. 0 Η ： 8. 0 B : 9. 〇 E ： 6. 5 Η ： 9. 0 B ： 7.5 E ·· 7· 0 Η ： 7. 0 C ： 12.5 F ： 8. 0 I : 10. 0 C : 10. 5 F ： 7. 5 1:8.5 C ： 8. 0 F ： 8. 0 I ： 8. 5 [考察] 在塊X中’在各分割塊的最大潛變變形量係為 13.0mm，最小潛變變形量係為6. 0mm，產生有最大7mm的 差異，但在塊Z中，在各分割塊的最大潛變變形量係為 9.0mm，最小潛變變形量係為7. 0mm，收斂至2mm左右。此 外，此差異即使加以平均，也可得知在塊X與塊Z中差異 變大。 由此亦可得知’各分割塊之密度卢與整體之密度α之 差異之參差不齊較小的發泡樹脂成形塊，與參差不齊相對 較大的塊作比較，可得知在載置面整體中潛變變形量之差 異及平均變變形量之差異較小。由此觀之，證實了本發 明之發泡樹脂成形塊的優異性。 接著說明使用本發明之發泡樹脂成形塊1〇作為輕量 填土之輕量填土構造體之數個例子。 ,第1例係根據第π圖所說明之輕量填土構造體，在該 =中係為使用本發明之發泡樹脂成形塊作為〖PS塊4的 此構造之輕量填土構造體係為輕量填土之-方之侧 323486 26 201231766 面為垂直面，故被稱之為單垂直面填土型輕量填土構造體。 第2例係為第8圖所示之輕量填土構造體，在此，係 在限制支撐地基3之道路1之兩側的位置垂直打入2排Η 形鋼2、2，且在該Η形鋼2之間，堆積多階層本發明之發 泡樹脂成形塊10作為輕量填土。在圖示的例中，發泡樹脂 成形塊10中之接近Η形鋼2、2之部位的發泡樹脂成形塊 10s，其整體密度係較其他發泡樹脂成形塊10還高。此外， 在多階層堆積之輕量填土的適當處，係配置適當個數的水 泥地板11，而在輕量填土上，係形成有由水泥地板、路床、 下層路基、上層路基、表層等所構成之道路舖設體道路1。 此構造之輕量填土構造體係為輕量填土之兩側面為垂直 面，故被稱之為兩垂直面填土型輕量填土構造體。 第3例係為第9圖所示之輕量填土構造體，其係為兩 垂直面填土型輕量填土構造體之其他例。在此，在挖掘於 地中之溝中亦堆積有多階層本發明之發泡樹脂成形塊10 作為輕量填土之點，所使用之所有發泡樹脂成形塊10係為 大致相等之整體密度之點，係與第8圖所示之兩垂直面填 土型輕量填土構造體有所不同。 第4例係為第10圖所示之輕量填土構造體，在支撐地 基3之挖掘部及地表面更上方，係堆積有多階層本發明之 發泡樹脂成形塊10作為輕量填土。所形成之輕量填土係在 道路兩側呈傾斜面，而輕量填土層之地表部係由保護土 12 所覆蓋。再者，在該保護土 12上係形成有道路1。此構造 之輕量填土構造體，其輕量填土之兩側面為斜面，故被稱 27 323486 201231766 之為兩斜坡面型輕量填土構造體。 另外，在任-輕量填土構造體中，在上 小的部位，均可使用翌A 了重作用較 $知之發泡樹脂成形塊而非本發明之 發泡樹脂成形塊10。 开伞赞月之 【圖式簡單說明】 塊之:：⑷及㈦係為用以說明本發明之發泡樹脂成形 第2圖（a)及（b)係為用 一例的斜視圖。 以說明本發明之發泡成形機之 第3圖⑷及（b)係為用以說明第2圖所示之發泡成形 機之俯視圖與側面圖。 第4圖（a)及（b)係為相當於用以說明本發明之發泡成 形機之另一例之第3圖的圖。 第5圖（a)及（b)係為相當於用以說明本發明之發泡成 形機之再另一例之第3圖的圖。 第6圖係為相當於用以說明本發明之發泡成形機之再 另一例之第3圖的圖。 第7圖係為顯示用在用以證實本發明之發泡樹脂成形 鬼之有效性之實驗之發泡樹脂成形塊的圖。 θ第8圖係為說明使用本發明之發泡樹脂成形塊作為輕 篁填土之輕量填土構造體的一例圖。 ^第9圖係為說明使用本發明之發泡樹脂成形塊作為輕 里填土之輕量填土構造體的另一例圖。 第10圖係為說明使用本發明之發泡樹脂成形塊作為 28 323486 201231766 輕量填土之輕量填土構造體的再另一例圖。 第11圖係為用以說明以使用長方體形狀之發泡樹脂 成形塊作為輕量填土之輕量填土工法施工之輕量填土構造 體之一例圖。 【主要元件符號說明】 2 Η形鋼 3 支樓地基 4 EPS塊 6 水泥地板 7 Ί苗 8 路基 9 遞青鋪路 10 、 10s 發泡樹脂成形塊 10p 分割塊 11 水泥地板 12 保護土 20 第1成形模 21 成形品腔室 22 底熱板 23 侧熱板 24 頂板 25 底板 26 侧板 27 蒸氣腔室 29 323486 201231766 28、34 分散板 29、35 區隔板 30 第2成形模 31 封鎖熱板 32 箱體 33 蒸氣腔室 34 分散板 40、40a 至 40d、41 、41a至41d調壓閥 A1 至 A4 發泡成形機 a 縱長 b 橫寬 c 南度 30 323486D-20 D-25 D-30 16 — 20 25 30 35 ------ 50 70 90 Density (kg/ni3) Allowable compressive strength (kN/V) As in the previous, finished product, from ^ 'in hair The foamed resin molded article, particularly in the in-mold foam molding, can be prevented from being uneven in the internal density from the supply of the vapor to the preliminary foamed particles filled in the molded product chamber. ^ P'H is completely avoided at the center, the density is higher, the degree is relatively high, and j is dense at the surface. Therefore, when the foam is formed by the conventional forming method, even if the overall apparent density is 2 〇kg In the case of the block of /m3, in the case of the progress of the inside of the measuring block, the center portion is about 22 kg/m3, and the surface portion is about 18 kg/m3. In this case, when the allowable compressive strength is designed to be 50 kN/m2, the compressive strength of the portion having a density of i8 kg/m3 may be insufficient. Therefore, the part that is actually strong enough will withstand the load of the strength of 15 323486 201231766. Therefore, depending on the ratio of the sufficient strength portion to the insufficient strength portion, the load is also generated for the portion having sufficient strength. In the foamed resin molded block 10 of the present invention, the unevenness of the internal density is extremely small, and the above-described load can be uniformly received. That is, according to the present invention, it is possible to provide a product having a design allowable compressive strength of 50 kN/m2 when used as a lightweight fill, even if a D-20 having an allowable compressive strength of 50 kN/m 2 is actually used. The foamed resin molded block 10 which does not cause problems such as uneven subsidence after the construction is also produced. In the foamed resin molded block 10 of the present invention, the point at which the internal density is extremely uneven is verified as follows. In other words, one or more foamed resin molded blocks 10 are taken out as a sample from a group of a plurality of foamed resin molded blocks formed by a foam molding machine described later. As shown in Fig. 1(b), the drawn foamed resin molded block 10 shown in Fig. 1(a) is an equal part in the longitudinal direction a direction and bn aliquot in the transverse width b direction. The height c direction is made into cn equal parts to obtain anxbnxcn divided blocks 10p. Further, in the example shown in Fig. 1, an is 5, a bn is 8, and a cn is 5, and is divided into 5x8x5=200 (s) divided blocks 10p. Further, each of the dividing blocks 10p is a block having a rectangular parallelepiped shape of 240 mm x 450 mm x 180 mm. In addition, as described above, an, bn, and cn may be values of an, bn g 3, and cn. As shown in the figure, the values may be different values or may be the same value (for example, an, bn , cn are 3). The density /3 of each divided block 10p divided in this manner was measured, and this value was compared with the density ? of the entire foamed resin molded block 10. Further, when the density/3 of all the segments 16 323 486 201231766 cut pieces 10p is in the range of (1 ± 0.06) a (kg/m 3 ), the foamed resin molded block 10 is set to be foamed within the scope of the present invention. Resin shaped block 10. In this example, the density α of the foamed resin molded block 10 as a whole is 20 kg/m 3 , and the density of all the divided blocks 1 Op is in the range of 21. 2 to 18.8 kg / m 3 , which is the present invention. The foamed resin molded block 10 in the range. When the density/3 is out of the range of (1 ± 0.06) a (kg/m3) among the 200 divided blocks 10p, the foamed resin molded block 10 is outside the scope of the present invention. When the foamed molding block is continuously formed by using a foam molding machine, usually, each repeated molding cycle temporarily increases the local clogging of the vapor pores, and the distribution of the internal density of the formed foamed resin molded block is at this point. It will also change gradually. Even if the supply balance of the vapor is set in order to obtain the foamed resin molded block 10 which satisfies the conditions of the present invention, the supply balance of the vapor will be from the initial one due to the blockage of the vapor hole as the number of the repetitive molding is 100 or 200. The setting conditions are changed, and finally, it is inevitable that a foamed resin molded block which does not satisfy the conditions of the present invention is formed. Therefore, after forming a certain number, the final molded article is sampled, and the above-described division and density/3 measurement are performed. As a result, when the conditions of the invention are satisfied, the foamed resin formed up to now can be estimated. Forming block 10 is within the scope of the invention. Further, a certain number of forming is performed, and the final molded product is sampled, and the above-described division and density/3 are measured. When the conditions of the invention are not satisfied, the plurality of foamed resin molded blocks previously formed are In the outside of the scope of the invention, the scope of the invention is not limited to the scope of the invention, and the cleaning of the buttonhole of the lamp forming machine is carried out, and the initial molding conditions are returned to the foamed resin molding block. Forming. & In addition, in the foamed silk scarf, the density stone of the divided block 10p which is located in the majority of the two places is easily beyond the range of (10)', and the extent of the degree of the overhang occurs. The data is poured into the product, and the weight of the foamed resin molded block formed by the (4) foam molding machine is subjected to the enthalpy tendency 1 of the foamed resin molding block, and is supplied to the forming buckle cavity by the control. The foamed resin molded block 10 within the scope of the present invention can be foam molded. A foam molding machine suitable for producing the foamed resin molded block of the present invention and a method of operating the same will be described. Fig. 2 and Fig. 3 show an example of a foam molding machine. In this example, the foam molding machine A1 is composed of the first molding die 2〇 and the second molding die 30, the second figure (4) shows the state in which the two molds are opened, and the second figure (6) shows the state in which the mold is closed. The forming die 2G has a molded product chamber 21. The forming chamber 21 to 21 is a rectangular parallelepiped shape divided by a bottom hot plate 22 having a plurality of vapor holes (not shown) and four side hot plates 23. The outside of the molded product chamber is formed as a vapor chamber 27 partitioned by the top plate 24 and the bottom plate 25 and the four side plates 26. In the 口腔 幵 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔 口腔(valve) 4{) is supplied with a high temperature vapor adjusted to 323486 18 201231766. In the foam molding machine A1 shown in Fig. 2 and Fig. 3, the steam insufflation piping in front of the pressure regulating valve 40 is divided into two, and the steam is supplied from the two places into the steam chamber 27. In a position opposed to each of the vapor blowing pipes in the vapor chamber 27, the dispersing plates 28 are disposed, respectively, and the vapor supplied into the vapor chamber 27 collides with the dispersing plate 28 toward the bottom. The direction of the hot plate 22 is dispersed. Although it may be omitted, a partitioning plate 29 of an appropriate size may be provided between the two dispersion plates 28 in the vapor chamber 27 so that the vapor supplied from the respective vapor blowing pipes is not mixed. The second molding die 30 is sized to cover the molded product chamber 21 formed in the first molding die 20, and is formed by a sealing hot plate 31 having a plurality of vapor holes (not shown) and covered to block the blocking. The casing 32 on the back side of the hot plate 31 is formed, and the inside of the casing 32 is formed as a vapor chamber 33. In the vapor chamber 33, a source of high-temperature high-pressure steam (not shown) is supplied through the pressure regulating valve 41 to supply a predetermined amount of high-temperature steam. In the second molding die 30, the vapor injection pipes in front of the pressure regulating valve 41 are also divided into two, and the vapor is supplied from the two places into the vapor chamber 33. Dispersing plates 34 are also disposed at positions opposing the vapor supply ports in the vapor chamber 33, and the vapor supplied into the vapor chambers 33 is collided with the dispersing plates 34, and is directed toward the blocking heat. The direction of the plate 31 is dispersed. Although it may be omitted, a partition plate 35 of an appropriate size may be provided between the two dispersion plates 34 in the vapor chamber 33 so that the steam supplied from the respective steam blowing pipes is not mixed. Although not shown, the foam molding machine A1 is provided with a control means for each of the steam injection pipes, and has a control means for controlling the vapor pressure and the vapor flow rate, and is configured to flow the vapors of the pressure regulating valves 40, 41. Adjustment of flow rate and adjustment of opening degree of 19 323486 201231766 pressure regulating valves 40, 41. Fig. 4 is another example of a foam molding machine. The foam molding machine A2 has four steam-injecting pipes in front of the pressure regulating valves 40 and 41, and is located opposite to each steam blowing pipe. There are four dispersion plates 28 and 34 which are different from the foam molding machine A1 shown in Figs. 2 and 3. The other components are the same as those of the foam molding machine A1, and the same reference numerals are attached thereto, and the description is omitted. Further, in Fig. 4, the partition plates 29, 35 provided between the respective dispersion plates 28, 34 as needed are omitted. Fig. 5 is a still further illustration of a foam molding machine A. The foam molding machine A3 is provided with four steam supply pipes from a source of high-temperature and high-pressure steam (not shown), and is provided in each of the steam supply pipes. The pressure regulating valves 40a to 40d, 41a to 41d differ from the foaming molding machine A2 shown in Fig. 4. The other components are the same as those of the foam molding machine A2, and the same reference numerals will be given thereto, and the description will be omitted. Further, in Fig. 5, the partition plates 29, 35 provided between the respective dispersing plates 28, 34 are also omitted. Although not shown in the drawings, the foam molding machine A3 includes a control means for controlling each of the vapor injection pipes, and has a control means for controlling the vapor pressure and the vapor flow rate, and is configured to flow to the respective pressure regulating valves 40a to 40d, and adjustment of the vapor flow rate of the pressure regulating valves 41a to 41d, and adjustment of the opening degree of the pressure regulating valves. Fig. 6 is still another example of the foam molding machine. In the foam molding machine A4, the four steam blowing pipes on the side of the steam chamber 27 are further divided into three on the downstream side of the pressure regulating valves 40a to 40d. Opening in the vapor chamber 27, in addition, the four steam insufflation pipes on the side of the vapor chamber 33 are further divided into three in the vapor chamber at the flow side of each of the pressure regulating 20 323486 201231766 valves 41 a to 41 d. The opening in the chamber 33 is different from the foam molding machine A3 shown in Fig. 5. The other constitutions are the same as those of the foam molding machine A3, and the same reference numerals are attached thereto, and the description is omitted. Further, in Fig. 6, the partition plates 29, 35 provided between the respective dispersion plates 28, 34 as needed are omitted. In any of the foam molding machines A1 to A4, at the time of molding the foamed resin molded block 10, predetermined preliminary foamed particles are filled in a predetermined amount in the molded cavity of the first molding die 20 in an open state. In the chamber 21, after the mold clamping, the steam supplied to the predetermined conditions is supplied to both of the steam chambers 27 and 33 to foam and dissolve the preliminary expanded particles. Thereafter, the desired foamed resin molded block 10 is obtained by opening the mold. This forming method is the same as the conventional method. The obtained foamed resin molded block 10 is divided into a plurality of pieces in the manner described above in the first drawing to obtain a plurality of divided blocks l〇p. Then, measure the density of each. Thereby, information on the unevenness of the internal density of the formed foamed resin molded block 10 is obtained. According to the obtained capital: the vapor amount and the vapor of the vapor chambers 27 and 33 supplied from the respective vapor blowing pipes to both sides are appropriately controlled by appropriately controlling the pressure regulating valves 40 and 41 and the vapor meteor 4 on the upstream side. Pressure so that the jaggedness becomes as small as possible. By repeating this sequence several times, a foamed resin molded block having a variation in the internal density distribution of ± 6% or less can be obtained. * In the foam molding machines A1 to A4 exemplified in the drawings, the more the number of steam blowing pipes supplied to the air chambers 27 to 33 of both sides, the more finely controlled the vapor is toward the molded product chamber 21. Under the conditions of blowing, a foamed resin molding block 10 having a smaller unevenness in the density distribution of the 21 323 486 201231766 portion can be obtained. The degree of homogenization of the internal density distribution required for the foamed resin molded block 10, and the expenses required for the foam molding machine and its operation, as long as the foam molding machines A1 to A4 having an appropriate number of steam blowing pipes are used, can. Further, regardless of the foam molding machine, it is impossible to avoid the clogging of the vapor holes formed in the vapor chambers 27 and 33 of both of them due to the passage of time, and the steam supply conditions also change with time. Therefore, even if the desired vapor supply condition is obtained as described above, the desired foamed resin molded block 10 is molded, and the foamed resin molded block 10 exceeding the initial conditions is gradually formed. Therefore, after manufacturing a foamed resin molded block of 100 or 200 batches, a suitable foamed resin molded block is sampled therefrom, and the sampled foamed resin is molded into a block, as described above. An equal part in the longitudinal direction a, a bn aliquot in the width b direction, and an cn aliquot in the height c direction, and the density of each of the obtained anxbnxcn divided blocks is measured (kg/m3), The density/3 is compared with the density a (kg/m3) of the initial setting, and the respective density S is brought close to the density α, and the control means provided in each of the steam blowing pipes is used to blow into each vapor chamber. It is preferable to adjust the vapor pressure and the vapor flow rate of the chambers 27 and 33, and then to start the operation method of the production operation of the next batch of the foamed resin molded block. At this time, by disposing the partition plates 29 and 35 between the respective dispersion plates 28 and 34 in the respective vapor chambers 27 and 33, it is possible to avoid the supply of the steam from each of the vapor chambers 27 and 33. Since the vapor is mixed, it is easy to obtain the foamed resin molded block 10 in accordance with the initial conditions. 22 323 486 201231766 [Examples] Next, the foamed resin molded block of the present invention will be described by way of Examples and Comparative Examples. Fig. 7 shows a foamed resin molded block used in the examples and comparative examples. Three foamed resin molded blocks X, Y, and Z in a rectangular parallelepiped shape having a density α of 19.7 kg//m 3 were prepared. In addition, the molding of the foamed resin molded blocks X, Y, and Z is performed by adjusting the amount of steam supplied to the vapor chamber, temperature, and pressure using the same foam molding machine as shown in the second table described later. ·> The internal density distribution is different. Specifically, the 'foamed resin molded block X is a foam molding machine that does not have the partition plate 29, and is formed by using a foam molding machine of the form shown in Figs. 2 and 3, and the molding conditions are vapor pressure. 1 kg/cm2, heating time 20 seconds, mold temperature 120 degrees to form. The foamed resin molded block Y was molded using the same foam molding machine under the conditions of vapor pressure, 7 kg/cm 2 , heating time of 35 seconds, and mold temperature of 115 degrees. The foamed resin molded block z is the same as the foam molding machine of the form shown in Fig. 6, that is, the entire shape is the same as the foam molding machine for molding the foamed resin molded block X, but is used for each pressure regulating On the downstream side of the valves 40a to 40d, 41a to 41d, the steam blowing pipes are further divided into three, and the foam molding machine is opened in the vapor chamber, and the forming conditions are vapor pressure on the pressure regulating valve 40a. 5kg/cm2, in the pressure regulating valve 4〇d, 41d is 0. 5kg, the pressure regulating valve 40c, 41c is 0. 5kg / cm2, the pressure regulating valve 4〇d, 41d is 0. 5kg /cm2, heating time 40 seconds, mold temperature ii5 degrees formed. The outermost surface of each of the foamed resin molded blocks was made into 9 equal portions, and the numbers of A to I were assigned to the respective divided blocks as shown in Fig. 7 . That is, all the foamed resins 23 323486 201231766 are formed into blocks γ, γ, ζ, right-milled, and the MM direction is made up of 3 equal parts, and the transverse direction is Τ / / » A degree 〇 direction is obtained as 1 part. 9 divided blocks Α to the jth amount of each divided block (four) degrees The results are shown in the table of 帛2. Block X: 19. 7 A : 18. 5 D : 20. 〇B : 19. 0 E : 22. 0 C : 18. 5 F : 20. 〇 Density (kg/m3) I i 4 Y : 19. 7 Block Z: 19' 7 19. 5 - A 19. 0 D : 19. 5 G : 19. 5 A : 19. 5 D : 19. 5 G : 19. 5 20. 〇B 19. 5 E : 21. 5 H : 20. 〇B : 19. 5 E : 20. 5 H : 20. 5 19. 5 c 19. 0 F : 19. 5 I : 19. 5 C : 19. 5 F : 19. 5 I : 19. The maximum density of the X-divided blocks is the minimum S of the block E, the degree is 18.5 kg/m3 of the block c, and the distance is: knife. m: The maximum density of the overall density of 19 7kg/m3 is +2_3kg/m, which is 1〇%. (2) Among the three γ-divided blocks, the maximum density is g// of the block e. The minimum enthalpy is 19. Okg/m3 of the blocks A and C, and the distance is in the whole of the Knife cut block + The maximum staggered density of 19.7 kg/m3 is +1.8 kg/m3, which is 9%. 5kW。 The total density of the total density of the slabs of the slabs of the slabs of the slabs of the slabs of the slabs of the slabs. The maximum staggeredness is +〇.8kg/m3, or 4%. Therefore, the density point of the block Z system is the partition block A to I, which is in the range of the whole block & degree 19·7(α)x(i±〇·Q6) (kg/m3), and the block z It is within the scope of the invention and is equivalent to the embodiment. 323486 24 201231766 [Experiment 1] The initial variation measurement is based on the Japanese EPS civil engineering method, and the weight of the allowable compressive stress of the above d_2〇 (size 19.0kg/m to 21.5kg/m) is 5〇kN/m2. The object is placed in each of the divided blocks' and the variation results are measured as shown in Table 3. Table 3 Variation (mm) Rabbit X: 5. 3r J Block Y: 5· 3 Block Z: 5. 2 A : 5. 9 D : 5. 1 G : 5. 3 A : 5. 6 D : 5. 5 G : 5. 3 A : 5.4 D : 5. 3 G : 5. 3 B : 5. 6 E : 4. 0 Η : 5. 0 B : 5. 3 E : 4. 3 H : 5. 0 B : 5.2 E : 4. 6 H : 4. 5 C : 6. 0 F : 5. 0 I : 5. 4 C : 5. 7 F : 5. 2 I : 5.4 C : 5· 3 F : 5.4 I : 5. 4 If the shovel is 'in block X', the maximum density is +2. 3kg/m3 (10%). As a result, in the block Z of the present invention, the maximum density difference is as small as +0. 8 kg/m (4%), and the result is that the maximum variation is about 2·〇jijm. The difference in the amount of variation in each of the divided blocks is as small as about 1.0 匪. From this point of view, the difference between the density of each divided block and the density of the whole α is smaller than that of the foamed resin molded block (block), and the block having a relatively large unevenness (block X, Υ) By comparison, it can be seen that the difference in the amount of variation in the entire placement surface is small. From this point of view, the superiority of the foamed resin molded block of the present invention was confirmed. [Experiment 2] Measurement of creep deformation amount For each of the divided blocks of Experiment 1, further placed under a load for 1 day, the amount of long-term latent deformation was measured. The results are shown in Table 4. 323486 25 201231766 4th table creep deformation amount (mm) Block X: 9. 7 Block Y: 8. 7 Block Ζ : 7. 8 A : 13. 0 D : 9. 0 G : 10. 0 A : 11.0 D : 8. 0 G : 8. 5 A · 9.0 D : 7. 5 G : 8. 0 B : 11.0 E : 6. 0 Η : 8. 0 B : 9. 〇E : 6. 5 Η : 9. 0 B : 7.5 E ·· 7· 0 Η : 7. 0 C : 12.5 F : 8. 0 I : 10. 0 C : 10. 5 F : 7. 5 1:8.5 C : 8. 0 F : 8. 0 I : 8. 5 [Investigation] In block X, the maximum creep deformation amount in each segment is 13.0 mm, and the minimum creep deformation is 6. 0 mm, resulting in a difference of up to 7 mm, but in block Z. The maximum creep deformation amount in each divided block is 9.0 mm, and the minimum creep deformation amount is 7. 0 mm, which converges to about 2 mm. In addition, even if this difference is averaged, it can be known that the difference between block X and block Z becomes larger. Therefore, it can be known that the foamed resin molded block having a small difference between the density of each divided block and the density α of the whole is compared with a block having a relatively large unevenness, and it can be known that The difference in the amount of latent deformation and the difference in the average variable deformation amount are small. From this, the superiority of the foamed resin molded block of the present invention was confirmed. Next, a few examples of using the foamed resin molded block 1 of the present invention as a lightweight fill structure for lightweight fill will be described. The first example is a lightweight fill structure described in the πth diagram, and the foamed resin molded block of the present invention is used as the lightweight fill structure of the structure of the PS block 4. Light-filled earth-side side 323486 26 201231766 The surface is a vertical surface, so it is called a single vertical fill type lightweight fill structure. The second example is a lightweight fill structure shown in Fig. 8, in which two rows of Η-shaped steels 2, 2 are vertically inserted at positions on both sides of the road 1 that supports the support foundation 3, and Between the bismuth steels 2, a plurality of layers of the foamed resin molded block 10 of the present invention are stacked as a lightweight fill. In the illustrated example, the foamed resin molded block 10s in the vicinity of the dome-shaped steels 2 and 2 in the foamed resin molded block 10 has a higher overall density than the other foamed resin molded blocks 10. In addition, a suitable number of cement floors 11 are disposed at appropriate places for lightweight filling of multiple layers, and on the lightweight fill, cement floor, road bed, lower roadbed, upper roadbed, and surface layer are formed. The pavement road 1 formed by the road. The lightweight fill structure of this structure is that the two sides of the lightweight fill are vertical, so it is called two vertical fill type lightweight fill structures. The third example is a lightweight fill structure shown in Fig. 9, which is another example of two vertical fill type lightweight fill structures. Here, in the trench excavated in the ground, a plurality of layers of the foamed resin molded block 10 of the present invention are also deposited as a point of lightweight filling, and all of the foamed resin molded blocks 10 used are substantially equal in overall density. The point is different from the two vertical fill type lightweight fill structures shown in Fig. 8. The fourth example is a lightweight fill structure shown in Fig. 10, and a plurality of layers of the foamed resin molded block 10 of the present invention are stacked as a lightweight fill on the excavation portion of the support foundation 3 and above the ground surface. . The light-filled soil formed is inclined on both sides of the road, and the surface of the lightweight fill is covered by protective soil 12. Further, a road 1 is formed on the protective soil 12. The lightweight fill structure of this structure has a sloped surface on both sides of the lightweight fill, so it is called 27 323486 201231766 as a two-slope type lightweight fill structure. Further, in the any-lightweight filler structure, the foamed resin molded block having a higher weight than the known foamed resin molded block 10 can be used in the upper portion. [Brief Description] Blocks: (4) and (7) are used to explain the molding of the foamed resin of the present invention. Figs. 2(a) and (b) are perspective views showing an example. Fig. 3 (4) and (b) showing the foam molding machine of the present invention are a plan view and a side view for explaining the foam molding machine shown in Fig. 2. Fig. 4 (a) and (b) are views corresponding to Fig. 3 for explaining another example of the foam molding machine of the present invention. Fig. 5 (a) and (b) are views corresponding to Fig. 3 for explaining still another example of the foam forming machine of the present invention. Fig. 6 is a view corresponding to Fig. 3 for explaining another example of the foam molding machine of the present invention. Fig. 7 is a view showing a foamed resin molded block used in an experiment for confirming the effectiveness of the foamed resin molding ghost of the present invention. Fig. 8 is a view showing an example of a lightweight filler structure using the foamed resin molded block of the present invention as a light-filled fill. Fig. 9 is a view showing another example of the use of the foamed resin molded block of the present invention as a lightweight fill structure for a light fill. Fig. 10 is a view showing still another example of the use of the foamed resin molded block of the present invention as a lightweight fill structure of 28 323 486 201231766 lightweight fill. Fig. 11 is a view showing an example of a lightweight fill structure constructed by a lightweight fill method using a foamed resin molded block having a rectangular parallelepiped shape as a lightweight fill. [Main component symbol description] 2 Ηshaped steel 3 branch foundation 4 EPS block 6 cement floor 7 Ί seedling 8 roadbed 9 青青铺10, 10s foamed resin forming block 10p partitioning block 11 cement floor 12 protective soil 20 first forming Mold 21 Molding chamber 22 Bottom hot plate 23 Side hot plate 24 Top plate 25 Base plate 26 Side plate 27 Vapor chamber 29 323486 201231766 28, 34 Dispersion plate 29, 35 Zone partition 30 Second forming die 31 Blocking hot plate 32 Box Body 33 Vapor chamber 34 Dispersing plates 40, 40a to 40d, 41, 41a to 41d Pressure regulating valves A1 to A4 Foaming machine a Length b Cross width c South degree 30 323486