Cracks in bulky concrete will reduce the strength and frost resistance of concrete,which has bad effect on the impermeability and durability of concrete.

大體積混凝土裂縫會降低混凝土的強度和抗凍性乱伦视频APP，對混凝土抗?jié)B性和耐久性的影響尤為嚴重国产性行为视频。

This paper mainly study the effect of mineral additive to concrete pore structure, mechanical performance, frost resistance and impermeability, and discuss the relationship of pore structure and concrete performance.

本文主要研究了無機鹽類外加劑對混凝土孔結構及其力學性能、抗凍與抗?jié)B性能的影響久久AV先锋影音资源网站，并探討了孔結構與其性能的關系久久这里精品12。

Various amounts of SAP were added to the fresh concrete,the specimens were maintained at 35 ℃ and 10% relative humidity,or at 5 ℃ and 65% RH for 56 days,and the tests of frost resistance and impermeability were carried out.

在新拌混凝土中摻入不同數(shù)量的SAP国产手机小视频看片，將試樣置于35 ℃、相對濕度為10%以及5 ℃国产专区网站、相對濕度65%的環(huán)境中養(yǎng)護56 d欧美一级情欲视频，研究中進行混凝土抗凍與抗?jié)B試驗。

In frost incarnadine body, lights the flare in the cold wind, then like spring's flowers, spread the step the mountains and plains, the ignition sky, the ignition season, lights the exhausted mind.

在霜凍中染紅身子美女黄色福利视频，在冷風中點燃火把女同一区二区三区，然后如春天的花朵般，遍步山野玖玖玖在线精品免费视频，點燃天空肏屄直接看，點燃季節(jié)，點燃疲憊的心靈三级日韩欧美第一页。

For the hope of the ingrate melts like a wintry frost and runs off like useless water.

因為国产毛片无码特级毛片无码，不知恩者的希望，就如冬天的霜人人看人人插人人摸，勢必消溶国产精品视频一区二区啪视频，逝去有如無用的流水。

The frost is injurious to the plants.

霜對植物是有害的羞羞色院91精品网站。

Like a lot of typical intertropical plants, paper nutgrass flatsedge is very sensitive to frost.

像許多典型的熱帶植物一樣2020亚洲高清一区二区，紙莎草對霜很敏感。

The technology and quality of tunnel inwall decorating is related to the service performance of tunnels such as the comfort degree of travel,refractorily,moisture-resistance,frost-resistance and hazard-resistance,and the cost of maintenance in operational period,thereby it is an important tache which can not being neglected in tunnel construction.

隧道內(nèi)壁的裝飾技術和質量關系到行車的舒適度久久人人澡人人爽人人爱、耐火日韩一级性爱黄片视频在、防潮、防凍国产精品偷啪在线观看、防災等使用性能以及營運期間的養(yǎng)護維修成本日本不卡网址欧美视频，是隧道建設中不容忽視的一個重要環(huán)節(jié)。

That was Jack Frost's card.

這是嚴冬的名片亚洲免费发布白白视频。

That plant looks in poor condition. I think it must be some of Jack Frost's work.

這株植物看上去情況不妙人人操人人干在线观看，想必是霜凍造成的。