贵州省地方标准¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 山砂混凝土技术规程¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.Local Standards of Guizhou Province¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.Rock-Sand Concrete¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.Technical Specifications¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.DBJ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
22-016-95¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.1995贵阳¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.关于批准发布贵州省地方标准¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.《山砂混凝土技术规程》的通知¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.黔城标通发[1995]342号¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.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:¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.由贵州中建建筑科研设计院主编的《山砂混凝土技术规程》业经审查,现批准为贵州省地方标准、编号为DBJ22-016-95,自一九九六年三月一日起施行.《山砂混凝土技术规程》(1978年10月施行)同时废止.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.本标准归口管理具体解释工作由贵州中建建筑科研设计院负责.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 贵州省城乡建设环境保护厅¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 一九九五年十二月二十七日¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
主题词:地方标准发布通知¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.规程编制说明¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.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.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.原规定实施十七年来,混凝土技术发展较快.混凝土等级也有提高,外加剂的品种增加了很多,使用也更为普遍.山砂的生产与山砂混凝土的使用量逐年上升.为了适应我省建筑业的发展,使山砂混凝土应用技术规程与现行混凝土结构、工程设计、施工及验收规范一致,省工程建设化办公室下达了对原山砂混凝土技术规定修订项目,由贵州中建建筑科研设计院承担并于一九九五年十一月九日通过评审.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.第一章总则¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.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.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.1.2本规程中的山砂系白云石质和石灰石质岩石经开采的筛选物,不包括其它岩质的山砂.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.1.3本规程中的山砂适用于配制工业与民建筑物和一般构筑物中的普通混凝土和预应力混凝土.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.第二章山砂的质量要求¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.1山砂事分为两类.自然山砂和机制山砂¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.1.1自然山砂系风化岩石经开挖或爆破松动筛分而成的山砂.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.1.2机制山砂系岩石经专门机械破碎筛分制成的山砂.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.2对山砂进行质量鉴定分两种方法.型式检验和生产检验.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.3砂子生产,砂源应有足够的蕴藏量.开采前,表层覆盖土和夹层必须清除干净.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.4山砂中大于5mm的颗粒不得超过10%.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.5山砂泥块含量和山砂的验收、运输及堆放按国家现行标准《普通混凝土用砂质量标准及检验方法》中有关规定执行.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.6山砂按颗粒配分Ⅰ、Ⅱ两区,强度等级大于或等于C30的混凝土应使用Ⅰ区砂,低于C30的混凝土可使用Ⅰ区和Ⅱ区砂.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.Ⅰ区山砂颗粒级配分区表面2.6¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. | ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. |
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.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。¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.8山砂的坚固性以压碎指标表示.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.8.1有耐冻性要求的混凝土工程,山砂的总压碎标值不得大于35%.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.8.2对于有一般耐磨要求的混凝土工程,山砂的压碎指标不得大于35%,小于0.16mm颗粒含量不得大于20%.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.9山砂的质量检验方法,除压碎指标试验方法外,均按国家现行标准《普通混凝土用砂质量标准及检验方法》执行.山砂压碎指标试验方法见附录.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. Ⅰ、Ⅱ两砂重叠区¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.筛孔尺寸(mm)¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.山砂颗粒级配分区图¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.山砂中粉末含量限制 表2.7¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.混凝土强度等级¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 小于0.08mm颗粒¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 不大于(%)¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 小于0.16mm颗粒¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 不大于(%)¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
<C20¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 20¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 30¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
C20~30¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 15¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 25¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
>C30¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 10¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
| 20¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
|
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 注:如实验有条件,可做0.08mm颗粒筛分试验¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.第三章山砂的应用¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.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.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.2自然山砂混凝土的收缩徐变值要比中、粗河砂混凝土收缩徐变值大10%.机制山砂混凝土的收缩徐变值与中、粗河砂混凝土相近,两者均能满足国家现行标准《混凝土结构设计规范》规定指标.为了保证预应力构件抗裂性安全度,预应力混凝土构件应使用机制山砂.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.3由于山砂中粉末含量一般较大,为了提高混凝土强度和节约水泥,宜配制低流动性混凝土.在配合比设计中,宜采用低砂率、低水灰比和选用强度高、粒形好的未风化的母岩破碎的砂与外加剂配合使用.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.4山砂混凝土应采用机械搅拌,机械振捣.搅拌时间较国家现行标准《混凝土结构工程施工及验收规范》的要求再延长一分钟.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.5为了保证山砂混凝土强度的正常发展和减少收缩.必须加强养护工作,需特别注意早期养护. 养护期内应覆盖并保持表面经常湿润.早期浇水养护时间不得少于7d.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.6用白云石质或石灰石砂配制的混凝土,外加剂不得采有酸类物质,以免造成混凝土强度降低.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.7山砂混凝土可用一般蒸汽养护,不得蒸压养护.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.8凡不符合本规程的山砂,须经过试验有充分依据或已有可靠的工程实例,方可使用.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.9本规程中有关山砂质量的未尽条款,按国家现行标准执行.关于混凝土结构设计,凡本规程未规定事项,仍按国家现行标准《混凝土结构设计规范》及《混凝土结构工程施工及验收规范》的有关规定执行.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.第四章山砂检测规则¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1检验分类¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1.1产品检验分:生产检验和型式检验¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1.2每批产品必须进行生产检验.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1.3当产品有下列情况之一时,应进行型式检验.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1.3.1新选砂源及调整生产工艺时.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1.3.2当生产工艺有较大改变时.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.1.3.3国家有关机构提出进行型式检验时¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. 正常连续生产每年应进行一次型式检验.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.2检验项目¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.2.1生产检验项目包括细度模数,颗粒级配、比重密度、泥块含量、小于0.16mm及0.08mm含粉量.对于大于等于C30强度等级的混凝土应进行压碎指标测试.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.2.2型式检验项目:包括生产检验项目,另增加化学组份检验(含0.16mm及0.08mm以下粉未的化学成份分析)是否与母岩相同.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.3生产检验以400m3或600t为一检验验收批.如场口生产量小者,则以每周连续生产量为一检验验收批.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.4抽样及样品数量,按国家现行标准执行.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.附录一山砂压碎指标试验方法¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.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.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.二、仪器设备:1.压力试验机50-1000KN压力或万能试验机.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.受压钢模.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.受压钢模由圆筒,底盘和加压压块组成.其尺寸如附图1所示:¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.附图1受压钢模示意图:(1)圆筒;(2)底盘;(3)加压块¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.天平:称量1000g、感量为1g¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.砂筛一套,包括筛孔为5.0、2.5mm的圆孔筛及1.25、0.630、0.315、0.16、0.08mm的方孔筛.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.5.烘箱:能控制温度在100-1100C的范围之内.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.6.其它:瓷盘10个、小勺2把.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.三、试样制备:将砂样烘干,并筛分5.0~2.50、2.50~1.25、1.25~0.630、0.630~0.315mm等四个等级,每级试样质量不得少于1000g.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.四、试验步骤¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.1.置圆筒于底盘上,组成受压模,将分级砂样装入模内,使试样距底盘面的高度约为50mm.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.整平模内试样的表面,将加压块放入圆筒内,并转动一周使之与试样均匀接触.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.3.将装好砂样的受压模置于压力机支承板上,对准压板中心后,开动机器,以每秒500N的速度加荷.直到加荷到25KN时并稳荷5S后以同样速度卸荷.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.4.取下受压模,移去加压块,倒出压过的试样,然后用该粒级的下限筛(如砂样为5-2.5mm时,则其下限筛为2.50mm筛孔的筛)进行筛分,称出试样的筛余量(G1)和通过量(G2)¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.五、试样结果的计算:¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.1.第i单级砂样的压碎指标按下式计算:¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.Yi=¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.式中:Yi-第i单级砂样压碎指标¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.G1-试样的筛余量¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.G2-通过量¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.以三份试样试验结果的算术平均值作为各个单级试样的测定值.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.2.四级砂样总的压碎指标按下式进行计算,¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.Yi=∑¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.式中:Yt-四级砂样总的压碎指标¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
ai-第i级砂样的分计含量对0.315~5.0mm颗粒总重量的百分率.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£. ¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.
¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.¹gÍEebßCsbbs.3c3t.com¾³rG7S
£.