A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING GRANULE FOR SUB-BASE
PROBLEM TO BE SOLVED: To securely suppress the elution of boron from a sub-base using coal ash as raw material.SOLUTION: Upon the method for producing a granule 1 for a sub-base, when the granule 1 for a sub-base including coal ash 2 is granulated, a cement material 3 including one kind selected from portland cement and blast furnace cement is added to the coal ash 2 at an addition amount of above 3 mass% and 30 mass% or lower, a Ca elution source 4 is added to the coal ash 2 at an addition amount of above 2 mass% and 20 mass% or lower, the coal ash 2 added with the cement material 3 and the Ca elution source 4 is subjected to hydration and granulation, and the coal ash 2 after the granulation is subjected to vapor aging.SELECTED DRAWING: Figure 1
【課題】 石炭灰を原料とする路盤材から、ホウ素が溶出することを確実に抑制する。【解決手段】本発明の路盤材用造粒物１の製造方法は、石炭灰２を含む路盤材用造粒物１を造粒するに際しては、ポルトランドセメントまたは高炉セメントから選ばれる１種を含むセメント材３を、３質量％より多く且つ３０質量％以下となる添加量で石炭灰２に添加し、Ｃａ溶出源４を、２質量％より多く且つ２０質量％以下となる添加量で石炭灰２に添加し、セメント材３及びＣａ溶出源４が添加された石炭灰２を加水すると共に造粒し、造粒後の石炭灰２に対して蒸気エージングを行う。【選択図】図１
METHOD FOR PRODUCING GRANULE FOR SUB-BASE
PROBLEM TO BE SOLVED: To securely suppress the elution of boron from a sub-base using coal ash as raw material.SOLUTION: Upon the method for producing a granule 1 for a sub-base, when the granule 1 for a sub-base including coal ash 2 is granulated, a cement material 3 including one kind selected from portland cement and blast furnace cement is added to the coal ash 2 at an addition amount of above 3 mass% and 30 mass% or lower, a Ca elution source 4 is added to the coal ash 2 at an addition amount of above 2 mass% and 20 mass% or lower, the coal ash 2 added with the cement material 3 and the Ca elution source 4 is subjected to hydration and granulation, and the coal ash 2 after the granulation is subjected to vapor aging.SELECTED DRAWING: Figure 1
【課題】 石炭灰を原料とする路盤材から、ホウ素が溶出することを確実に抑制する。【解決手段】本発明の路盤材用造粒物１の製造方法は、石炭灰２を含む路盤材用造粒物１を造粒するに際しては、ポルトランドセメントまたは高炉セメントから選ばれる１種を含むセメント材３を、３質量％より多く且つ３０質量％以下となる添加量で石炭灰２に添加し、Ｃａ溶出源４を、２質量％より多く且つ２０質量％以下となる添加量で石炭灰２に添加し、セメント材３及びＣａ溶出源４が添加された石炭灰２を加水すると共に造粒し、造粒後の石炭灰２に対して蒸気エージングを行う。【選択図】図１
METHOD FOR PRODUCING GRANULE FOR SUB-BASE
路盤材用造粒物の製造方法
KOBAYASHI YOSHIHIRO (author) / SASAKI TATSUYA (author) / FURUMURA NAGAMITSU (author) / UMEZAWA YUZO (author)
2017-01-19
Patent
Electronic Resource
Japanese
COAL ASH GRANULE AND METHOD FOR PRODUCING COAL ASH GRANULE
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