無(wú)錫飛機(jī)維修庫(kù)地坪價(jià)格是多少 400-0709-910(請(qǐng)撥打400-0709-910電話(huà)，永堅(jiān)地坪公司)
正常的金剛砂耐磨地面的整體強(qiáng)度和表面硬度都非常好，一般不會(huì)出現(xiàn)地面起灰現(xiàn)象。但在施工或養(yǎng)護(hù)不當(dāng)?shù)惹闆r下，也容易出現(xiàn)強(qiáng)度不夠、地面起灰的現(xiàn)象。其主要原因如下：
1、金剛砂耐磨地面材料質(zhì)量問(wèn)題造成地面起灰：如材料存放期過(guò)長(zhǎng)造成變質(zhì)，或其中的原材料——高標(biāo)號(hào)水泥變質(zhì)；
2、施工不當(dāng)造成地面起灰：過(guò)早開(kāi)始灑材料，造成水灰比偏大；
3、養(yǎng)護(hù)不當(dāng)造成地面起灰：養(yǎng)護(hù)劑涂抹太少，或養(yǎng)護(hù)劑質(zhì)量有問(wèn)題，根本起不到很好的養(yǎng)護(hù)作用，造成地面失水過(guò)快被燒壞；
4、過(guò)早地投入使用造成地面起灰：地面還未達(dá)一定的強(qiáng)度就投入使用，車(chē)輪、鞋底等與地面磨擦損壞表層；
5、低溫受凍、或室外施工時(shí)過(guò)早淋雨均有可能造成地面起灰。
金剛砂耐磨地面起灰的補(bǔ)救措施：在地面完全干燥后，使用KD700進(jìn)行硬化處理，科地福KD700混凝土密封固化劑是一種滲透性的水性制劑，它能滲透至金剛砂耐磨地面內(nèi)部，生成一種凝膠，從而提高起灰地面的密實(shí)度和硬度，并且持久** 冷庫(kù)地面在-11℃以上混凝土的硬化，這是發(fā)生水化反應(yīng)并獲得強(qiáng)度的**溫度。但實(shí)際情況是，混凝土在室溫下硬化卻暴露在低溫條件下，例如極端冷庫(kù)地面，液化天然氣罐，天然氣的沸點(diǎn)為-162℃。
溫度從冰點(diǎn)低至-200℃范圍時(shí)，水泥混凝土地面強(qiáng)度明顯高于室溫�；炷晾鋮s時(shí)如果是濕的，則在上述溫度下的抗壓強(qiáng)度約為室溫下的二到三倍。但對(duì)于氣干混凝土，抗壓強(qiáng)度則增加得很少。
潮濕和干燥混凝土在低溫冷庫(kù)地面，強(qiáng)度增長(zhǎng)的差別與硬化水泥漿體中冰的形成有關(guān)。凝膠孔孔徑越小則其中水的冰點(diǎn)溫度越低，因而吸附水在-80℃—-95℃溫度才能完全冰凍。與水不同，冰能承壓，冰凍混凝土**孔隙率極低，因此強(qiáng)度高。冰的強(qiáng)度和線(xiàn)脹系數(shù)隨溫度變化，因此冷庫(kù)地面水化水泥漿體的強(qiáng)度和線(xiàn)脹系數(shù)的變化很復(fù)雜。
Overall strength and surface hardness normal Emery wear floor are very good, generally gray phenomenon does not appear from the ground. However, in construction or improper maintenance, etc., it is also prone to strong enough, the ground from ash phenomenon. The main reason is as follows:
1, Emery wear floor material quality problems caused by the ground from the ashes: A material deterioration caused by long storage period, or where raw materials - high-grade cement deterioration;
2, improper construction from gray ground: early start sprinkling material, resulting in water-cement ratio is too large;
3, conservation improper ground from gray: curing agent applied too little, or curing agent quality problems, can hardly good conservation role, causing excessive water loss ground to be burned;
4, prematurely put into the ground from the resulting ash: the ground has not yet reached a certain strength to put into use, wheels, shoe soles and other damage to the surface of the friction with the ground;
5, low temperature cold, rain or outdoor construction may have caused the ground prematurely from ash.
Emery wear floor from ash remedies: After the ground is completely dry, use KD700 be hardened, Kedi Fu KD700 concrete sealer is an aqueous formulation permeability, it can penetrate to the interior Emery wear floor, generating a gel, thereby improving the ground from the ash density and hardness, and lasting hardening effectively over -11 ℃ cold concrete floor, which is the hydration reaction occurs and the lowest temperature strength. But the reality is that the concrete has cured at room temperature, exposure to low temperature conditions, such as extreme cold ground, liquefied natural gas tanks, gas boiling point of -162 ℃.
Freezing temperatures as low as -200 ℃ range from concrete floor strength was significantly higher than room temperature. When concrete cooling if it is wet, the compressive strength at the above temperature is about two to three times at room temperature. But for the air-dry concrete, compressive strength is increased very little.
Wet and dry concrete in cold storage ground, increase the intensity differences and hardened cement paste in ice formation. The smaller the pore size gel which lower the freezing point of water temperature, thus absorbed water at a temperature of -80 ℃ --95 ℃ to completely freezing. Unlike water, ice can be confined, frozen concrete and effective porosity is extremely low, and therefore high strength. Ice strength and linear expansion coefficient varies with temperature, so cold surface water intensity and linear expansion coefficient of cement paste changes are complex.
資訊來(lái)源：<聯(lián)系電話(huà):400-0709-910>
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