impermeability to water 中文意思是什麼
impermeability to water
解釋
抗滲水性，不透水性- impermeability : 不浸透性
- to : adv 到某種狀態；〈特指〉到停止狀態；關閉。 ★也常和動詞結合，略去其後賓語，而構成成語： The door i...
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Because it well reserves the chemical stability of inorganic glass, it has the following features : low density, low thermal conductivity, vapor impermeability, no water absorption, incombustibility, protection from mould and rat eating, high mechanical strength but easy to cut and able to bear all kinds of chemical erosions except the hydrofluoric acid
由於它完全保留了無機玻璃的化學穩定性，具有容重低導熱系數小不透濕不吸水不燃燒不霉變不受鼠嚙機械強度高卻又易加工，能耐除氟化氫以外所有的化學侵蝕。 -
Dormancy for hard seeds is caused by impermeability to water and gas and mechanical constraint of the seed coat
硬實種子種皮透水透氣性差和對胚生長的機械限制，引起種子休眠。 -
Cementitious capillary crystalline waterproofing coating ( abbreviated ccwc ) is a new type of cement - based waterproofing materials, which is characterized by its very good adhesive performance and impermeability to water, self - rehabilitating ability, permanent waterproofing effect, good aging resistance and corrosion resistance, simple construction method and harmless to hunman etc. ccwc consists of ordinary portland cement, quartz sand and reactive substances and other supplementary ingredients, whose reactive substance can permeate into the internal part of concrete structures through water and produce insoluble crystals filling capillary pores or crack of the concret through reaction with cement hydrates and unhydrates
水泥基滲透結晶型防水材料是以硅酸鹽水泥或普通硅酸鹽水泥、石英砂等為基材，摻入活性化學物質而組成的一種新型防水材料。摻入的活性化學物質以水作載體向混凝土內部滲透，與混凝土中未水化的水泥及部分水泥水化產物發生結晶反應，生成不溶於水的結晶體，堵塞毛細孔道，使混凝土緻密、防水。這種防水材料具有粘結力強、抗滲性能好、自愈合能力強、防水效果持久、耐老化、耐腐蝕、易施工、對人類無害等特點。 -
According to relative criteria, the performance of ash - jd such as ratio of water - reducing, ratio of compressive strength, effect of enhancing strength, ratio of bleeding, air entrainment content, effect of keeping slump value, compatibility with cement, resistance to concrete shrinkage and damage by freezing and thawing and impermeability to water etc are all equal to the traditional aminosulfonic - based superplasticizers, and the ratio of performance to price is better than naphthalene series superplasticizers
按照相關標準，對產品進行了測試，所開發的低成本改性氨基磺酸鹽高效減水劑ash - jd的各項性能如減水率、抗壓強度比、增強效果、引氣性、坍落度保持效果、與水泥適應性、收縮性能、抗凍融性能、抗滲性能等相當于傳統氨基磺酸鹽高效減水劑，性能價格比優于萘系高效減水劑。 -
Brushed with the thickness of 1. 5 ~ 2. 0mm. it can improve the impermeability pressure up 3 times that of blank samples ; the crystalline reaction can continuously carry out, sealing the crack and waterproofing for ever if water is existent ; very good environmental adaptability, and can be used as normal at ph 3. 0 ~ 12. 0 ; moreover, the contrast tests of the performance of pt coating with two kinds of widely used waterproofing coating xypex and coprox were also carried out in this paper. test results show that the properties such as impermeability, self - rehabilitating ability and corrosion resistance are superior to those of the counterparts
試驗結果表明， pt防水塗料具有如下的性能特點：具有良好的防水性能，塗刷厚度1 . 5 2 . 0mm ，抗滲壓力可提高3倍以上；在有水的條件下，結晶反應可以不斷進行，能實現自愈合、永久性防水；具有很強的環境適應性，在ph值3 . 0 12 . 0條件下均可正常使用；此外，本文還進行了pt防水塗料與同類型防水材料xypex和防水寶（二者都是目前應用廣泛的防水塗料）的性能對比試驗。 -
The expansive property of concrete curing in water is better than that curing in air. the curing time of multiple anti - cracking and impermeability concrete can not less than 14 days. ill to take all account of the factors such as raw materials, construction, curing, and tensile strength, limit tensile strain, etc., which have effect on anti - cracking property of concrete, the overall crack probability is brought forward to access anti - cracking property of concrete, with aid of mathematics
為了全面地考慮原材料、施工、養護、抗拉強度和極限拉伸率等因素對混凝土抗裂性能的影響，利用數學概率分析方法，引入體積開裂概率的概念評估混凝土的抗裂性能。應用材料復合技術，無機-有機多組份復合，研製出一種新型復合抗裂材料，提高混凝土的抗裂防滲性能，且滿足混凝土的強度和工作性要求。 -
Because of this condition, applicability of water permeating method to evaluate impermeability of concrete is studied in this paper
正是基於這種現狀，本課題著重研究了水滲透法評價混凝土滲透性的適用性。
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