贵州省地方标准®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 山砂混凝土技术规程®øÚîGbbs.3c3t.comIíÞ!Ò Local Standards of Guizhou Province®øÚîGbbs.3c3t.comIíÞ!Ò
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®øÚîGbbs.3c3t.comIíÞ!Ò 1995贵阳®øÚîGbbs.3c3t.comIíÞ!Ò
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®øÚîGbbs.3c3t.comIíÞ!Ò 关于批准发布贵州省地方标准®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 《山砂混凝土技术规程》的通知®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 黔城标通发[1995]342号®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 省直各有关厅局、各地州市建设局、各设计、施工、科研、质检单位:®øÚîGbbs.3c3t.comIíÞ!Ò 规程编制说明®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 贵州省地方标准《山砂混凝土技术规定》由原贵州省基本建设委员会于一九七八年三月以(78)黔基设字第89号文颁发执行.规定总结了贵州省20余年试验使用山砂混凝土技术的经验,它的颁发与实施,取得了极大的社会、技术经济效益,加速了我省建筑业的发展.®øÚîGbbs.3c3t.comIíÞ!Ò 第一章总则®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 1.1为了在我省基本建设中贯彻“因地制宜,就地取材”的原则,合理的生产山砂和利用山砂配制普通混凝土,特制定本技术规程.®øÚîGbbs.3c3t.comIíÞ!Ò 第二章山砂的质量要求®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 2.1山砂事分为两类.自然山砂和机制山砂®øÚîGbbs.3c3t.comIíÞ!Ò Ⅰ区山砂颗粒级配分区表面2.6®øÚîGbbs.3c3t.comIíÞ!Ò
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®øÚîGbbs.3c3t.comIíÞ!Ò 2.7山砂中有适量的粉末,对于中、低等级混凝土性能有所改善,但粉末含量过多,对混凝土性能又会带来一定不利影响.山砂中粉末(小颗粒)含量可按表面2.7规定来控制。®øÚîGbbs.3c3t.comIíÞ!Ò Ⅰ、Ⅱ两砂重叠区®øÚîGbbs.3c3t.comIíÞ!Ò
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筛孔尺寸(mm)®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 山砂颗粒级配分区图®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 山砂中粉末含量限制 表2.7®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 混凝土强度等级®øÚîGbbs.3c3t.comIíÞ!Ò | 小于0.08mm颗粒®øÚîGbbs.3c3t.comIíÞ!Ò 不大于(%)®øÚîGbbs.3c3t.comIíÞ!Ò | 小于0.16mm颗粒®øÚîGbbs.3c3t.comIíÞ!Ò 不大于(%)®øÚîGbbs.3c3t.comIíÞ!Ò |
<C20®øÚîGbbs.3c3t.comIíÞ!Ò | 20®øÚîGbbs.3c3t.comIíÞ!Ò | 30®øÚîGbbs.3c3t.comIíÞ!Ò |
C20~30®øÚîGbbs.3c3t.comIíÞ!Ò | 15®øÚîGbbs.3c3t.comIíÞ!Ò | 25®øÚîGbbs.3c3t.comIíÞ!Ò |
>C30®øÚîGbbs.3c3t.comIíÞ!Ò | 10®øÚîGbbs.3c3t.comIíÞ!Ò | 20®øÚîGbbs.3c3t.comIíÞ!Ò |
第三章山砂的应用®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 3.1山砂混凝土除耐磨性较差外,轴心抗压,混凝土与钢筋粘结力,弹性模量,均不比普通中、粗河砂混凝土低.抗折和抗拉强度,疲劳强度修正系数均接近中、粗河砂混凝土.山砂混凝土物理力学性能指标可按国家现行标准《混凝土结构设计规范》规定取用.®øÚîGbbs.3c3t.comIíÞ!Ò 第四章山砂检测规则®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 4.1检验分类®øÚîGbbs.3c3t.comIíÞ!Ò 附录一山砂压碎指标试验方法®øÚîGbbs.3c3t.comIíÞ!Ò
®øÚîGbbs.3c3t.comIíÞ!Ò 一、试验目的:测定出山砂0.3~5mm粒级的压碎指标,以间接度量出坚固性.®øÚîGbbs.3c3t.comIíÞ!Ò ®øÚîGbbs.3c3t.comIíÞ!Ò
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