Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improvement method for expansive mudstone in arid region
The invention discloses an improvement method for expansive mudstone in an arid region, and relates to the field of expansive mudstone improvement, and the improvement method comprises the following steps: S1, measuring the positions of a middle pile and a side pile of a roadbed, and determining a roadbed filling control line; S2, determining the position of dumping the loosely laid mudstone, and dumping the loosely laid mudstone; S3, determining the quality of the required lime, and scattering the lime on the loosely laid mudstone; S4, controlling the water supplementing amount, enabling that a cold regeneration road mixer is parallel to a watering cart, mixing water at a constant speed, loosely laying mudstone and lime, and forming lime mudstone; and S5, after the ash amount and the water content are qualified through spot check, carrying out static pressure of a vibratory roller, strong vibration of a claw roller, leveling of a land leveler and rolling and leveling of a smooth wheel roller. According to the method, the clay content of the improved mudstone weathered substance is relatively reduced, the powder content is increased, and the grain composition is improved; and the expansibility of the improved mudstone weathered material is obviously weakened, the water stability is enhanced, the free expansion rate is reduced to about 20%, and the linear expansion rate is reduced to about 0.6%, so that the improvement effect of lime on the expansibility of the mudstone weathered material is relatively remarkable.
本发明公开了干旱地区膨胀性泥岩的改良方法，涉及膨胀性泥岩改良领域，包括S1测定路基的中桩和边桩位置，确定路基填筑控制线；S2、确定倒卸松铺泥岩的位置，倒卸松铺泥岩；S3确定所需石灰质量，石灰撒于松铺泥岩上；S4控制补水量，冷再生路拌机与洒水车并行，匀速拌和水、松铺泥岩和石灰，形成石灰泥岩；S5灰剂量和含水量抽检合格后，进行振动压路机静压、羊角碾强振、平地机赶平和光轮压路机碾压收光；本方法改良后泥岩风化物黏粒含量相对减少,粉粒含量增多,并且颗粒级配得到改善；改良后泥岩风化物的膨胀性明显削弱,水稳性增强，自由膨胀率下降到20％左右,线膨胀率则下降到0.6％左右，可见石灰对泥岩风化物膨胀性的改善效果较为显著。
Improvement method for expansive mudstone in arid region
The invention discloses an improvement method for expansive mudstone in an arid region, and relates to the field of expansive mudstone improvement, and the improvement method comprises the following steps: S1, measuring the positions of a middle pile and a side pile of a roadbed, and determining a roadbed filling control line; S2, determining the position of dumping the loosely laid mudstone, and dumping the loosely laid mudstone; S3, determining the quality of the required lime, and scattering the lime on the loosely laid mudstone; S4, controlling the water supplementing amount, enabling that a cold regeneration road mixer is parallel to a watering cart, mixing water at a constant speed, loosely laying mudstone and lime, and forming lime mudstone; and S5, after the ash amount and the water content are qualified through spot check, carrying out static pressure of a vibratory roller, strong vibration of a claw roller, leveling of a land leveler and rolling and leveling of a smooth wheel roller. According to the method, the clay content of the improved mudstone weathered substance is relatively reduced, the powder content is increased, and the grain composition is improved; and the expansibility of the improved mudstone weathered material is obviously weakened, the water stability is enhanced, the free expansion rate is reduced to about 20%, and the linear expansion rate is reduced to about 0.6%, so that the improvement effect of lime on the expansibility of the mudstone weathered material is relatively remarkable.
本发明公开了干旱地区膨胀性泥岩的改良方法，涉及膨胀性泥岩改良领域，包括S1测定路基的中桩和边桩位置，确定路基填筑控制线；S2、确定倒卸松铺泥岩的位置，倒卸松铺泥岩；S3确定所需石灰质量，石灰撒于松铺泥岩上；S4控制补水量，冷再生路拌机与洒水车并行，匀速拌和水、松铺泥岩和石灰，形成石灰泥岩；S5灰剂量和含水量抽检合格后，进行振动压路机静压、羊角碾强振、平地机赶平和光轮压路机碾压收光；本方法改良后泥岩风化物黏粒含量相对减少,粉粒含量增多,并且颗粒级配得到改善；改良后泥岩风化物的膨胀性明显削弱,水稳性增强，自由膨胀率下降到20％左右,线膨胀率则下降到0.6％左右，可见石灰对泥岩风化物膨胀性的改善效果较为显著。
Improvement method for expansive mudstone in arid region
干旱地区膨胀性泥岩的改良方法
LU HAOXIANG (Autor:in) / ZOU GAN (Autor:in) / WANG XIAOHUAI (Autor:in) / WEI XUSHENG (Autor:in) / TAN JUN (Autor:in) / YANG CHAO (Autor:in) / GAO JUN (Autor:in) / LEI LI (Autor:in) / PAN XUDONG (Autor:in) / JIANG DEHAI (Autor:in)
27.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
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