強(qiáng)度特性?

Strength characteristics

水穩(wěn)砼經(jīng)過水泥的水化反應(yīng)和壓實(shí)成型后，能形成較高的強(qiáng)度。其強(qiáng)度增長(zhǎng)較為迅速，在短時(shí)間內(nèi)就能達(dá)到一定的強(qiáng)度值，滿足道路施工進(jìn)度要求。一般情況下，水穩(wěn)砼在 7 天齡期時(shí)，其無側(cè)限抗壓強(qiáng)度可達(dá)到設(shè)計(jì)強(qiáng)度的 70% - 80%，28 天齡期時(shí)強(qiáng)度基本穩(wěn)定，達(dá)到設(shè)計(jì)強(qiáng)度標(biāo)準(zhǔn)值。例如，在濟(jì)南某城市快速路的水穩(wěn)砼基層設(shè)計(jì)中，要求 28 天齡期的無側(cè)限抗壓強(qiáng)度不低于 3.5MPa，通過合理的配合比設(shè)計(jì)和嚴(yán)格的施工控制，實(shí)際工程中的水穩(wěn)砼基層強(qiáng)度均能滿足甚至超過這一要求，為道路的長(zhǎng)期使用提供了可靠的強(qiáng)度保障。?

After the hydration reaction of cement and compaction molding, water stable concrete can form a high strength. Its strength increases rapidly and can reach a certain strength value in a short period of time, meeting the requirements of road construction progress. In general, the unconfined compressive strength of water stable concrete can reach 70% -80% of the design strength at 7 days of age, and the strength is basically stable at 28 days of age, reaching the design strength standard value. For example, in the design of a water stable concrete base layer for a certain urban expressway in Jinan, it is required that the unconfined compressive strength at 28 days of age should not be less than 3.5 MPa. Through reasonable mix design and strict construction control, the actual strength of the water stable concrete base layer in the project can meet or even exceed this requirement, providing reliable strength guarantee for the long-term use of the road. ?

穩(wěn)定性優(yōu)勢(shì)?

Stability advantage

水穩(wěn)砼具有良好的穩(wěn)定性，這得益于其內(nèi)部水泥與骨料形成的緊密結(jié)構(gòu)。在長(zhǎng)期的車輛荷載和自然環(huán)境作用下，水穩(wěn)砼基層不易發(fā)生變形、位移等問題。水泥的水化產(chǎn)物填充在骨料的空隙中，使水穩(wěn)砼形成一個(gè)整體，具有較高的抗剪切能力和抗疲勞性能。相比其他一些基層材料，水穩(wěn)砼在應(yīng)對(duì)溫度變化、濕度變化等環(huán)境因素時(shí)，表現(xiàn)出更好的穩(wěn)定性，能有效減少道路因基層不穩(wěn)定而產(chǎn)生的裂縫、坑洼等病害，延長(zhǎng)道路的使用壽命。?

Water stable concrete has good stability, thanks to the tight structure formed by its internal cement and aggregates. Under long-term vehicle loads and natural environmental conditions, the water stable concrete base is less prone to deformation, displacement, and other issues. The hydration products of cement fill the gaps in the aggregate, forming a whole of water stable concrete with high shear resistance and fatigue resistance. Compared to other base materials, water stable concrete exhibits better stability in dealing with environmental factors such as temperature and humidity changes, effectively reducing cracks, potholes, and other diseases caused by unstable base layers and extending the service life of roads. ?

耐久性良好?

Good durability

耐久性是水穩(wěn)砼的重要性能之一。由于水泥的水化反應(yīng)形成了較為致密的結(jié)構(gòu)，水穩(wěn)砼具有一定的抗?jié)B性，能有效阻止水分和有害物質(zhì)的侵入，減少對(duì)基層的侵蝕。同時(shí)，水穩(wěn)砼中的水泥與骨料之間的粘結(jié)力較強(qiáng)，在長(zhǎng)期使用過程中，不易出現(xiàn)骨料脫落、松散等現(xiàn)象。在濟(jì)南的道路建設(shè)中，水穩(wěn)砼基層的耐久性經(jīng)過多年的實(shí)踐檢驗(yàn)，在正常的交通荷載和自然環(huán)境下，能夠保證道路在設(shè)計(jì)使用年限內(nèi)保持良好的使用性能，降低道路的維護(hù)成本。

Durability is one of the important properties of water stable concrete. Due to the hydration reaction of cement forming a relatively dense structure, water stable concrete has a certain degree of impermeability, which can effectively prevent the invasion of moisture and harmful substances, and reduce the erosion of the base layer. At the same time, the bonding force between cement and aggregates in water stable concrete is strong, and it is not easy for aggregates to fall off or loosen during long-term use. In the road construction in Jinan, the durability of the water stable concrete base has been tested through years of practice. Under normal traffic loads and natural environments, it can ensure that the road maintains good performance during its designed service life and reduce maintenance costs.

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