水泥的

This research wants to understand for slag additament to restrain of ocean-sand concrete shall be getting worse. To separate river-sand and ocean-sand made fine aggregate, by means of slag additament be able to substitute for cement 20%~40%, and be able to set W/C=0.385、0.485 and 0.585 to make compressive、tensile and bending motor test sample, and shall be curing 3、7、28 and 56 days to search for relation of slag be able to substitute for cement、W/C、curing time and strength.

本研究为了解炉石抑制海砂混凝土材料恶化之效应，乃分别以河砂及海砂做为细骨材，以炉石替代水泥量，分别为20%~80%，并设定水灰比为0.385、0.485及0.585制作抗压、抗拉及抗弯水泥砂浆试体，并养治3天、7天、28天及56天探讨其炉石替代量、水灰比、养治龄期与强度间的关系。

The effect of applying polishing brick dust as one of cement admixture on cement properties was studied.

研究了陶瓷抛光砖粉作水泥混合材对水泥相关性能的影响。

By air-hardening period, water-hardening period, strength period, It is simple and clear to sum up that the hydration reaction feature of LFC is different from the portland cement, lime.

目前，已建立生产厂家，在建筑和采矿工程中应用。我国低标号水泥很少，常用高标号的水泥配制砂浆和采矿充填材料，这很不合理。LFC具有吃粉煤灰量大，用途广泛，成本低，性能好等特点。

Appropriate aggregate-exposed cement concrete pavement has the characters of antiskid ,wear resistance and low noise.

合适的露石水泥混凝土路面具有抗滑性高、耐磨性高、路面噪音低等特点，可使隧道水泥混凝土路面性能在多方面得到改善与提高。

Thus, cement particles and asbestos fibres are released from the surface and disperse in air and rainwater.

因此，水泥微粒和石棉纤维会从石棉水泥产品的表面剥落并散入到空气和雨水当中。

Huifeng, funda licensing of asbestos-cement tile 1800 720 6mm, based on asbestos and cement as the main raw materials made of light materials.

惠丰、丰达牌石棉水泥瓦1800×720×6mm，是以石棉和水泥为主要原材料制成的轻型建筑材料。

To simplify the mixing process and maintain consistency between the cement slurries for each bailer run, the cement and additives should be pre-measured into "kits."

不过，对于水泥包装技术讨论本文输电线是用来确定一个机械堵塞高于现有完工，然后放在水泥用捞砂泥的堵塞。

Was to abandon the existing perforations by performing a bullhead cement squeeze down the tubing before performing the cement packer.

一号井的规划是在安置水泥封割器前应用平面型挤水泥放弃现有筛孔。

The soil and cement are mixed into a solidified body in the deep level of the foundation by special-purposed deep mixer with cement as the solidifying agent, it can be increase the bearing capacity and decrease the settlement of the foundation by using the deep mixing method .

深层搅拌法是以水泥作固化剂，通过专用的深层搅拌机械，在地基深部就地将土和水泥搅拌而成加固体，应用该法处理地基可增加地基承载力，减小沉降。

It mainly contains the following things. At first, I bring for the way of anchoring two cementing slabs next to by using dog irons made of iron bars and then cover the surface of the road using bituminous concrete. After analyzing the feasibility of this method by using the famous and popular use soft ware ASYS, the results show the magnitude of the temperature stresses on the limited mat coat of the road has nothing to do with the length of the concrete slabs after covering it with bituminous concrete. Meanwhile, the relative horizontal shifting, the flexural-tensile strain, and the vertical shearing stress of the slabs next to it becomes the least after anchoring them with dog irons made of iron. Therefore it proves that it really works to use this method to prevent and slow down the speed of the reflection cracks in the bituminous concrete skin coat over the old road.

首先，提出采用钢筋马钉锚固相邻水泥混凝土板后再进行沥青混凝土罩面的新方法；采用国际著名的通用有限元软件ANSYS对其可行性进行了分析，结果表明在有限尺寸的板上进行沥青混凝土罩面后，罩面结构的温度应力的大小与板的长度几乎没有关系，同时采用钢筋马钉锚固相邻旧水泥混凝土板后，可以明显地减小相邻板的相对水平位移、接缝处罩面层底部的弯拉应变和垂直剪应变，从而表明该法对防止或减缓旧水泥混凝土路面上沥青混凝土罩面层的反射裂缝是确实可行的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐